{"id":1363,"date":"2008-12-29T00:46:43","date_gmt":"2008-12-29T00:46:43","guid":{"rendered":"http:\/\/127.0.0.1\/blog2\/?p=1363"},"modified":"2008-12-29T00:46:43","modified_gmt":"2008-12-29T00:46:43","slug":"java-%e7%ac%94%e8%af%95%e9%a2%98%e5%a4%a7%e5%85%a82","status":"publish","type":"post","link":"https:\/\/opgogo.com\/blog2\/?p=1363","title":{"rendered":"java \u7b14\u8bd5\u9898\u5927\u51682"},"content":{"rendered":"

java \u7b14\u8bd5\u9898\u5927\u5168<\/p>\n

61\u3001servlet\u7684\u751f\u547d\u5468\u671f
\nweb\u5bb9\u5668\u52a0\u8f7dservlet\uff0c\u751f\u547d\u5468\u671f\u5f00\u59cb\u3002\u901a\u8fc7\u8c03\u7528servlet\u7684init()\u65b9\u6cd5\u8fdb\u884cservlet\u7684\u521d\u59cb\u5316\u3002\u901a\u8fc7\u8c03\u7528service()\u65b9\u6cd5\u5b9e\u73b0\uff0c\u6839\u636e\u8bf7\u6c42\u7684\u4e0d\u540c\u8c03\u7528\u4e0d\u540c\u7684do***()\u65b9\u6cd5\u3002\u7ed3\u675f\u670d\u52a1\uff0cweb\u5bb9\u5668\u8c03\u7528servlet\u7684destroy()\u65b9\u6cd5\u3002<\/p>\n

62\u3001\u5982\u4f55\u73b0\u5b9eservlet\u7684\u5355\u7ebf\u7a0b\u6a21\u5f0f<\/p>\n

63\u3001\u9875\u9762\u95f4\u5bf9\u8c61\u4f20\u9012\u7684\u65b9\u6cd5
\nrequest\uff0csession\uff0capplication\uff0ccookie\u7b49<\/p>\n

64\u3001JSP\u548cServlet\u6709\u54ea\u4e9b\u76f8\u540c\u70b9\u548c\u4e0d\u540c\u70b9\uff0c\u4ed6\u4eec\u4e4b\u95f4\u7684\u8054\u7cfb\u662f\u4ec0\u4e48\uff1f
\nJSP \u662fServlet\u6280\u672f\u7684\u6269\u5c55\uff0c\u672c\u8d28\u4e0a\u662fServlet\u7684\u7b80\u6613\u65b9\u5f0f\uff0c\u66f4\u5f3a\u8c03\u5e94\u7528\u7684\u5916\u8868\u8868\u8fbe\u3002JSP\u7f16\u8bd1\u540e\u662f"\u7c7bservlet"\u3002Servlet\u548cJSP\u6700 \u4e3b\u8981\u7684\u4e0d\u540c\u70b9\u5728\u4e8e\uff0cServlet\u7684\u5e94\u7528\u903b\u8f91\u662f\u5728Java\u6587\u4ef6\u4e2d\uff0c\u5e76\u4e14\u5b8c\u5168\u4ece\u8868\u793a\u5c42\u4e2d\u7684HTML\u91cc\u5206\u79bb\u5f00\u6765\u3002\u800cJSP\u7684\u60c5\u51b5\u662fJava\u548cHTML\u53ef\u4ee5\u7ec4\u5408 \u6210\u4e00\u4e2a\u6269\u5c55\u540d\u4e3a.jsp\u7684\u6587\u4ef6\u3002JSP\u4fa7\u91cd\u4e8e\u89c6\u56fe\uff0cServlet\u4e3b\u8981\u7528\u4e8e\u63a7\u5236\u903b\u8f91\u3002<\/p>\n

65\u3001\u56db\u79cd\u4f1a\u8bdd\u8ddf\u8e2a\u6280\u672f
\n\u4f1a\u8bdd\u4f5c\u7528\u57dfServletsJSP \u9875\u9762\u63cf\u8ff0
\npage\u5426\u662f\u4ee3\u8868\u4e0e\u4e00\u4e2a\u9875\u9762\u76f8\u5173\u7684\u5bf9\u8c61\u548c\u5c5e\u6027\u3002\u4e00\u4e2a\u9875\u9762\u7531\u4e00\u4e2a\u7f16\u8bd1\u597d\u7684 Java servlet \u7c7b\uff08\u53ef\u4ee5\u5e26\u6709\u4efb\u4f55\u7684 include \u6307\u4ee4\uff0c\u4f46\u662f\u6ca1\u6709 include \u52a8\u4f5c\uff09\u8868\u793a\u3002\u8fd9\u65e2\u5305\u62ec servlet \u53c8\u5305\u62ec\u88ab\u7f16\u8bd1\u6210 servlet \u7684 JSP \u9875\u9762
\nrequest\u662f\u662f\u4ee3\u8868\u4e0e Web \u5ba2\u6237\u673a\u53d1\u51fa\u7684\u4e00\u4e2a\u8bf7\u6c42\u76f8\u5173\u7684\u5bf9\u8c61\u548c\u5c5e\u6027\u3002\u4e00\u4e2a\u8bf7\u6c42\u53ef\u80fd\u8de8\u8d8a\u591a\u4e2a\u9875\u9762\uff0c\u6d89\u53ca\u591a\u4e2a Web \u7ec4\u4ef6\uff08\u7531\u4e8e forward \u6307\u4ee4\u548c include \u52a8\u4f5c\u7684\u5173\u7cfb\uff09
\nsession\u662f\u662f\u4ee3\u8868\u4e0e\u7528\u4e8e\u67d0\u4e2a Web \u5ba2\u6237\u673a\u7684\u4e00\u4e2a\u7528\u6237\u4f53\u9a8c\u76f8\u5173\u7684\u5bf9\u8c61\u548c\u5c5e\u6027\u3002\u4e00\u4e2a Web \u4f1a\u8bdd\u53ef\u4ee5\u4e5f\u7ecf\u5e38\u4f1a\u8de8\u8d8a\u591a\u4e2a\u5ba2\u6237\u673a\u8bf7\u6c42
\napplication\u662f\u662f\u4ee3\u8868\u4e0e\u6574\u4e2a Web \u5e94\u7528\u7a0b\u5e8f\u76f8\u5173\u7684\u5bf9\u8c61\u548c\u5c5e\u6027\u3002\u8fd9\u5b9e\u8d28\u4e0a\u662f\u8de8\u8d8a\u6574\u4e2a Web \u5e94\u7528\u7a0b\u5e8f\uff0c\u5305\u62ec\u591a\u4e2a\u9875\u9762\u3001\u8bf7\u6c42\u548c\u4f1a\u8bdd\u7684\u4e00\u4e2a\u5168\u5c40\u4f5c\u7528\u57df<\/p>\n

66\u3001Request\u5bf9\u8c61\u7684\u4e3b\u8981\u65b9\u6cd5\uff1a
\nsetAttribute(String name,Object)\uff1a\u8bbe\u7f6e\u540d\u5b57\u4e3aname\u7684request\u7684\u53c2\u6570\u503c
\ngetAttribute(String name)\uff1a\u8fd4\u56de\u7531name\u6307\u5b9a\u7684\u5c5e\u6027\u503c
\ngetAttributeNames()\uff1a\u8fd4\u56derequest\u5bf9\u8c61\u6240\u6709\u5c5e\u6027\u7684\u540d\u5b57\u96c6\u5408\uff0c\u7ed3\u679c\u662f\u4e00\u4e2a\u679a\u4e3e\u7684\u5b9e\u4f8b
\ngetCookies()\uff1a\u8fd4\u56de\u5ba2\u6237\u7aef\u7684\u6240\u6709Cookie\u5bf9\u8c61\uff0c\u7ed3\u679c\u662f\u4e00\u4e2aCookie\u6570\u7ec4
\ngetCharacterEncoding()\uff1a\u8fd4\u56de\u8bf7\u6c42\u4e2d\u7684\u5b57\u7b26\u7f16\u7801\u65b9\u5f0f
\ngetContentLength()\uff1a\u8fd4\u56de\u8bf7\u6c42\u7684Body\u7684\u957f\u5ea6
\ngetHeader(String name)\uff1a\u83b7\u5f97HTTP\u534f\u8bae\u5b9a\u4e49\u7684\u6587\u4ef6\u5934\u4fe1\u606f
\ngetHeaders(String name)\uff1a\u8fd4\u56de\u6307\u5b9a\u540d\u5b57\u7684request Header\u7684\u6240\u6709\u503c\uff0c\u7ed3\u679c\u662f\u4e00\u4e2a\u679a\u4e3e\u7684\u5b9e\u4f8b
\ngetHeaderNames()\uff1a\u8fd4\u56de\u6240\u4ee5request Header\u7684\u540d\u5b57\uff0c\u7ed3\u679c\u662f\u4e00\u4e2a\u679a\u4e3e\u7684\u5b9e\u4f8b
\ngetInputStream()\uff1a\u8fd4\u56de\u8bf7\u6c42\u7684\u8f93\u5165\u6d41\uff0c\u7528\u4e8e\u83b7\u5f97\u8bf7\u6c42\u4e2d\u7684\u6570\u636e
\ngetMethod()\uff1a\u83b7\u5f97\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7aef\u4f20\u9001\u6570\u636e\u7684\u65b9\u6cd5
\ngetParameter(String name)\uff1a\u83b7\u5f97\u5ba2\u6237\u7aef\u4f20\u9001\u7ed9\u670d\u52a1\u5668\u7aef\u7684\u6709name\u6307\u5b9a\u7684\u53c2\u6570\u503c
\ngetParameterNames()\uff1a\u83b7\u5f97\u5ba2\u6237\u7aef\u4f20\u9001\u7ed9\u670d\u52a1\u5668\u7aef\u7684\u6240\u6709\u53c2\u6570\u7684\u540d\u5b57\uff0c\u7ed3\u679c\u662f\u4e00\u4e2a\u679a\u4e3e\u7684\u5b9e\u4f8b
\ngetParameterValues(String name)\uff1a\u83b7\u5f97\u6709name\u6307\u5b9a\u7684\u53c2\u6570\u7684\u6240\u6709\u503c
\ngetProtocol()\uff1a\u83b7\u53d6\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7aef\u4f20\u9001\u6570\u636e\u6240\u4f9d\u636e\u7684\u534f\u8bae\u540d\u79f0
\ngetQueryString()\uff1a\u83b7\u5f97\u67e5\u8be2\u5b57\u7b26\u4e32
\ngetRequestURI()\uff1a\u83b7\u53d6\u53d1\u51fa\u8bf7\u6c42\u5b57\u7b26\u4e32\u7684\u5ba2\u6237\u7aef\u5730\u5740
\ngetRemoteAddr()\uff1a\u83b7\u53d6\u5ba2\u6237\u7aef\u7684IP\u5730\u5740
\ngetRemoteHost()\uff1a\u83b7\u53d6\u5ba2\u6237\u7aef\u7684\u540d\u5b57
\ngetSession([Boolean create])\uff1a\u8fd4\u56de\u548c\u8bf7\u6c42\u76f8\u5173Session
\ngetServerName()\uff1a\u83b7\u53d6\u670d\u52a1\u5668\u7684\u540d\u5b57
\ngetServletPath()\uff1a\u83b7\u53d6\u5ba2\u6237\u7aef\u6240\u8bf7\u6c42\u7684\u811a\u672c\u6587\u4ef6\u7684\u8def\u5f84
\ngetServerPort()\uff1a\u83b7\u53d6\u670d\u52a1\u5668\u7684\u7aef\u53e3\u53f7
\nremoveAttribute(String name)\uff1a\u5220\u9664\u8bf7\u6c42\u4e2d\u7684\u4e00\u4e2a\u5c5e\u6027<\/p>\n

67\u3001J2EE\u662f\u6280\u672f\u8fd8\u662f\u5e73\u53f0\u8fd8\u662f\u6846\u67b6\uff1f
\nJ2EE\u672c\u8eab\u662f\u4e00\u4e2a\u6807\u51c6\uff0c\u4e00\u4e2a\u4e3a\u4f01\u4e1a\u5206\u5e03\u5f0f\u5e94\u7528\u7684\u5f00\u53d1\u63d0\u4f9b\u7684\u6807\u51c6\u5e73\u53f0\u3002
\nJ2EE\u4e5f\u662f\u4e00\u4e2a\u6846\u67b6\uff0c\u5305\u62ecJDBC\u3001JNDI\u3001RMI\u3001JMS\u3001EJB\u3001JTA\u7b49\u6280\u672f\u3002<\/p>\n

68\u3001\u6211\u4eec\u5728web\u5e94\u7528\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u7ecf\u5e38\u9047\u5230\u8f93\u51fa\u67d0\u79cd\u7f16\u7801\u7684\u5b57\u7b26\uff0c\u5982iso8859-1\u7b49\uff0c\u5982\u4f55\u8f93\u51fa\u4e00\u4e2a\u67d0\u79cd\u7f16\u7801\u7684\u5b57\u7b26\u4e32\uff1f
\nPublic String translate (String str) {
\nString tempStr = "";
\ntry {
\ntempStr = new String(str.getBytes("ISO-8859-1"), "GBK");
\ntempStr = tempStr.trim();
\n}
\ncatch (Exception e) {
\nSystem.err.println(e.getMessage());
\n}
\nreturn tempStr;
\n}<\/p>\n

69\u3001\u7b80\u8ff0\u903b\u8f91\u64cd\u4f5c(&,|,^)\u4e0e\u6761\u4ef6\u64cd\u4f5c(&&,||)\u7684\u533a\u522b\u3002
\n\u533a\u522b\u4e3b\u8981\u7b54\u4e24\u70b9\uff1aa.\u6761\u4ef6\u64cd\u4f5c\u53ea\u80fd\u64cd\u4f5c\u5e03\u5c14\u578b\u7684,\u800c\u903b\u8f91\u64cd\u4f5c\u4e0d\u4ec5\u53ef\u4ee5\u64cd\u4f5c\u5e03\u5c14\u578b,\u800c\u4e14\u53ef\u4ee5\u64cd\u4f5c\u6570\u503c\u578b
\nb.\u903b\u8f91\u64cd\u4f5c\u4e0d\u4f1a\u4ea7\u751f\u77ed\u8def<\/p>\n

70\u3001XML\u6587\u6863\u5b9a\u4e49\u6709\u51e0\u79cd\u5f62\u5f0f\uff1f\u5b83\u4eec\u4e4b\u95f4\u6709\u4f55\u672c\u8d28\u533a\u522b\uff1f\u89e3\u6790XML\u6587\u6863\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f\uff1f
\na: \u4e24\u79cd\u5f62\u5f0f dtd schema
\nb: \u672c\u8d28\u533a\u522b:schema\u672c\u8eab\u662fxml\u7684\uff0c\u53ef\u4ee5\u88abXML\u89e3\u6790\u5668\u89e3\u6790(\u8fd9\u4e5f\u662f\u4eceDTD\u4e0a\u53d1\u5c55schema\u7684\u6839\u672c\u76ee\u7684)
\nc:\u6709DOM,SAX,STAX\u7b49
\nDOM:\u5904\u7406\u5927\u578b\u6587\u4ef6\u65f6\u5176\u6027\u80fd\u4e0b\u964d\u7684\u975e\u5e38\u5389\u5bb3\u3002\u8fd9\u4e2a\u95ee\u9898\u662f\u7531DOM\u7684\u6811\u7ed3\u6784\u6240\u9020\u6210\u7684\uff0c\u8fd9\u79cd\u7ed3\u6784\u5360\u7528\u7684\u5185\u5b58\u8f83\u591a\uff0c\u800c\u4e14DOM\u5fc5\u987b\u5728\u89e3\u6790\u6587\u4ef6\u4e4b\u524d\u628a\u6574\u4e2a\u6587\u6863\u88c5\u5165\u5185\u5b58,\u9002\u5408\u5bf9XML\u7684\u968f\u673a\u8bbf\u95ee
\nSAX:\u4e0d\u73b0\u4e8eDOM,SAX\u662f\u4e8b\u4ef6\u9a71\u52a8\u578b\u7684XML\u89e3\u6790\u65b9\u5f0f\u3002\u5b83\u987a\u5e8f\u8bfb\u53d6XML\u6587\u4ef6\uff0c\u4e0d\u9700\u8981\u4e00\u6b21\u5168\u90e8\u88c5\u8f7d\u6574\u4e2a\u6587\u4ef6\u3002\u5f53\u9047\u5230\u50cf\u6587\u4ef6\u5f00\u5934\uff0c\u6587\u6863\u7ed3\u675f\uff0c\u6216\u8005\u6807\u7b7e\u5f00\u5934\u4e0e\u6807\u7b7e\u7ed3\u675f\u65f6\uff0c\u5b83\u4f1a\u89e6\u53d1\u4e00\u4e2a\u4e8b\u4ef6\uff0c\u7528\u6237\u901a\u8fc7\u5728\u5176\u56de\u8c03\u4e8b\u4ef6\u4e2d\u5199\u5165\u5904\u7406\u4ee3\u7801\u6765\u5904\u7406XML\u6587\u4ef6\uff0c\u9002\u5408\u5bf9XML\u7684\u987a\u5e8f\u8bbf\u95ee
\nSTAX:Streaming API for XML (StAX)<\/p>\n

xml\u6587\u6863\u6709\u4e24\u79cd\u5b9a\u4e49\u65b9\u6cd5\uff1a
\ndtd\uff1a\u6570\u636e\u7c7b\u578b\u5b9a\u4e49\uff08data type definition\uff09\uff0c\u7528\u4ee5\u63cf\u8ff0XML\u6587\u6863\u7684\u6587\u6863\u7ed3\u6784\uff0c\u662f\u65e9\u671f\u7684XML\u6587\u6863\u5b9a\u4e49\u5f62\u5f0f\u3002
\nschema\uff1a\u5176\u672c\u8eab\u662f\u57fa\u4e8eXML\u8bed\u8a00\u7f16\u5199\u7684\uff0c\u5728\u7c7b\u578b\u548c\u8bed\u6cd5\u4e0a\u7684\u9650\u5b9a\u80fd\u529b\u6bd4dtd\u5f3a\uff0c\u5904\u7406\u4e5f\u6bd4\u8f83\u65b9\u4fbf\uff0c\u56e0\u4e3a\u6b64\u6b63\u9010\u6e10\u4ee3\u66ffdtd\u6210\u4e3a\u65b0\u7684\u6a21\u5f0f\u5b9a\u4e49\u8bed\u8a00\u3002<\/p>\n

71\u3001\u7b80\u8ff0synchronized\u548cjava.util.concurrent.locks.Lock\u7684\u5f02\u540c \uff1f
\n\u4e3b\u8981\u76f8\u540c\u70b9\uff1aLock\u80fd\u5b8c\u6210synchronized\u6240\u5b9e\u73b0\u7684\u6240\u6709\u529f\u80fd
\n\u4e3b\u8981\u4e0d\u540c\u70b9\uff1aLock\u6709\u6bd4synchronized\u66f4\u7cbe\u786e\u7684\u7ebf\u7a0b\u8bed\u4e49\u548c\u66f4\u597d\u7684\u6027\u80fd\u3002synchronized\u4f1a\u81ea\u52a8\u91ca\u653e\u9501\uff0c\u800cLock\u4e00\u5b9a\u8981\u6c42\u7a0b\u5e8f\u5458\u624b\u5de5\u91ca\u653e\uff0c\u5e76\u4e14\u5fc5\u987b\u5728finally\u4ece\u53e5\u4e2d\u91ca\u653e\u3002<\/p>\n

72\u3001EJB\u7684\u89d2\u8272\u548c\u4e09\u4e2a\u5bf9\u8c61
\n\u4e00 \u4e2a\u5b8c\u6574\u7684\u57fa\u4e8eEJB\u7684\u5206\u5e03\u5f0f\u8ba1\u7b97\u7ed3\u6784\u7531\u516d\u4e2a\u89d2\u8272\u7ec4\u6210\uff0c\u8fd9\u516d\u4e2a\u89d2\u8272\u53ef\u4ee5\u7531\u4e0d\u540c\u7684\u5f00\u53d1\u5546\u63d0\u4f9b\uff0c\u6bcf\u4e2a\u89d2\u8272\u6240\u4f5c\u7684\u5de5\u4f5c\u5fc5\u987b\u9075\u5faaSun\u516c\u53f8\u63d0\u4f9b\u7684EJB\u89c4\u8303\uff0c\u4ee5\u4fdd\u8bc1 \u5f7c\u6b64\u4e4b\u95f4\u7684\u517c\u5bb9\u6027\u3002\u8fd9\u516d\u4e2a\u89d2\u8272\u5206\u522b\u662fEJB\u7ec4\u4ef6\u5f00\u53d1\u8005\uff08Enterprise Bean Provider\uff09 \u3001\u5e94\u7528\u7ec4\u5408\u8005\uff08Application Assembler\uff09\u3001\u90e8\u7f72\u8005\uff08Deployer\uff09\u3001EJB \u670d\u52a1\u5668\u63d0\u4f9b\u8005\uff08EJB Server Provider\uff09\u3001EJB \u5bb9\u5668\u63d0\u4f9b\u8005\uff08EJB Container Provider\uff09\u3001\u7cfb\u7edf\u7ba1\u7406\u5458\uff08System Administrator\uff09
\n\u4e09\u4e2a\u5bf9\u8c61\u662fRemote\uff08Local\uff09\u63a5\u53e3\u3001Home\uff08LocalHome\uff09\u63a5\u53e3\uff0cBean\u7c7b<\/p>\n

73\u3001EJB\u5bb9\u5668\u63d0\u4f9b\u7684\u670d\u52a1
\n\u4e3b\u8981\u63d0\u4f9b\u58f0\u660e\u5468\u671f\u7ba1\u7406\u3001\u4ee3\u7801\u4ea7\u751f\u3001\u6301\u7eed\u6027\u7ba1\u7406\u3001\u5b89\u5168\u3001\u4e8b\u52a1\u7ba1\u7406\u3001\u9501\u548c\u5e76\u53d1\u884c\u7ba1\u7406\u7b49\u670d\u52a1\u3002<\/p>\n

74\u3001EJB\u89c4\u8303\u89c4\u5b9aEJB\u4e2d\u7981\u6b62\u7684\u64cd\u4f5c\u6709\u54ea\u4e9b\uff1f
\n1. \u4e0d\u80fd\u64cd\u4f5c\u7ebf\u7a0b\u548c\u7ebf\u7a0bAPI(\u7ebf\u7a0bAPI\u6307\u975e\u7ebf\u7a0b\u5bf9\u8c61\u7684\u65b9\u6cd5\u5982notify,wait\u7b49)\uff0c2.\u4e0d\u80fd\u64cd\u4f5cawt\uff0c3.\u4e0d\u80fd\u5b9e\u73b0\u670d\u52a1\u5668\u529f\u80fd\uff0c4.\u4e0d\u80fd\u5bf9\u9759\u6001\u5c5e \u751f\u5b58\u53d6\uff0c5.\u4e0d\u80fd\u4f7f\u7528IO\u64cd\u4f5c\u76f4\u63a5\u5b58\u53d6\u6587\u4ef6\u7cfb\u7edf\uff0c6.\u4e0d\u80fd\u52a0\u8f7d\u672c\u5730\u5e93.\uff0c7.\u4e0d\u80fd\u5c06this\u4f5c\u4e3a\u53d8\u91cf\u548c\u8fd4\u56de\uff0c8.\u4e0d\u80fd\u5faa\u73af\u8c03\u7528\u3002<\/p>\n

75\u3001remote\u63a5\u53e3\u548chome\u63a5\u53e3\u4e3b\u8981\u4f5c\u7528
\nremote\u63a5\u53e3\u5b9a\u4e49\u4e86\u4e1a\u52a1\u65b9\u6cd5\uff0c\u7528\u4e8eEJB\u5ba2\u6237\u7aef\u8c03\u7528\u4e1a\u52a1\u65b9\u6cd5\u3002
\nhome\u63a5\u53e3\u662fEJB\u5de5\u5382\u7528\u4e8e\u521b\u5efa\u548c\u79fb\u9664\u67e5\u627eEJB\u5b9e\u4f8b<\/p>\n

76\u3001bean \u5b9e\u4f8b\u7684\u751f\u547d\u5468\u671f
\n\u5bf9 \u4e8eStateless Session Bean\u3001Entity Bean\u3001Message Driven Bean\u4e00\u822c\u5b58\u5728\u7f13\u51b2\u6c60\u7ba1\u7406\uff0c\u800c\u5bf9\u4e8eEntity Bean\u548cStatefull Session Bean\u5b58\u5728Cache\u7ba1\u7406\uff0c\u901a\u5e38\u5305\u542b\u521b\u5efa\u5b9e\u4f8b\uff0c\u8bbe\u7f6e\u4e0a\u4e0b\u6587\u3001\u521b\u5efaEJB Object\uff08create\uff09\u3001\u4e1a\u52a1\u65b9\u6cd5\u8c03\u7528\u3001remove\u7b49\u8fc7\u7a0b\uff0c\u5bf9\u4e8e\u5b58\u5728\u7f13\u51b2\u6c60\u7ba1\u7406\u7684Bean\uff0c\u5728create\u4e4b\u540e\u5b9e\u4f8b\u5e76\u4e0d\u4ece\u5185\u5b58\u6e05\u9664\uff0c\u800c\u662f\u91c7\u7528\u7f13\u51b2 \u6c60\u8c03\u5ea6\u673a\u5236\u4e0d\u65ad\u91cd\u7528\u5b9e\u4f8b\uff0c\u800c\u5bf9\u4e8e\u5b58\u5728Cache\u7ba1\u7406\u7684Bean\u5219\u901a\u8fc7\u6fc0\u6d3b\u548c\u53bb\u6fc0\u6d3b\u673a\u5236\u4fdd\u6301Bean\u7684\u72b6\u6001\u5e76\u9650\u5236\u5185\u5b58\u4e2d\u5b9e\u4f8b\u6570\u91cf\u3002<\/p>\n

77\u3001EJB\u7684\u6fc0\u6d3b\u673a\u5236
\n\u4ee5Stateful Session Bean \u4e3a\u4f8b\uff1a\u5176Cache\u5927\u5c0f\u51b3\u5b9a\u4e86\u5185\u5b58\u4e2d\u53ef\u4ee5\u540c\u65f6\u5b58\u5728\u7684Bean\u5b9e\u4f8b\u7684\u6570\u91cf\uff0c\u6839\u636eMRU\u6216NRU\u7b97\u6cd5\uff0c\u5b9e\u4f8b\u5728\u6fc0\u6d3b\u548c\u53bb\u6fc0\u6d3b\u72b6\u6001\u4e4b\u95f4\u8fc1\u79fb\uff0c\u6fc0\u6d3b\u673a\u5236\u662f\u5f53\u5ba2\u6237\u7aef\u8c03 \u7528\u67d0\u4e2aEJB\u5b9e\u4f8b\u4e1a\u52a1\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u5bf9\u5e94EJB Object\u53d1\u73b0\u81ea\u5df1\u6ca1\u6709\u7ed1\u5b9a\u5bf9\u5e94\u7684Bean\u5b9e\u4f8b\u5219\u4ece\u5176\u53bb\u6fc0\u6d3bBean\u5b58\u50a8\u4e2d\uff08\u901a\u8fc7\u5e8f\u5217\u5316\u673a\u5236\u5b58\u50a8\u5b9e\u4f8b\uff09\u56de\u590d\uff08\u6fc0\u6d3b\uff09\u6b64\u5b9e\u4f8b\u3002\u72b6\u6001\u53d8\u8fc1\u524d\u4f1a\u8c03\u7528\u5bf9\u5e94\u7684 ejbActive\u548cejbPassivate\u65b9\u6cd5\u3002<\/p>\n

78\u3001EJB\u7684\u51e0\u79cd\u7c7b\u578b
\n\u4f1a\u8bdd\uff08Session\uff09Bean \uff0c\u5b9e\u4f53\uff08Entity\uff09Bean \u6d88\u606f\u9a71\u52a8\u7684\uff08Message Driven\uff09Bean
\n\u4f1a\u8bddBean\u53c8\u53ef\u5206\u4e3a\u6709\u72b6\u6001\uff08Stateful\uff09\u548c\u65e0\u72b6\u6001\uff08Stateless\uff09\u4e24\u79cd
\n\u5b9e\u4f53Bean\u53ef\u5206\u4e3aBean\u7ba1\u7406\u7684\u6301\u7eed\u6027\uff08BMP\uff09\u548c\u5bb9\u5668\u7ba1\u7406\u7684\u6301\u7eed\u6027\uff08CMP\uff09\u4e24\u79cd<\/p>\n

79\u3001\u5ba2\u670d\u7aef\u8c03\u7528EJB\u5bf9\u8c61\u7684\u51e0\u4e2a\u57fa\u672c\u6b65\u9aa4
\n\u8bbe\u7f6eJNDI\u670d\u52a1\u5de5\u5382\u4ee5\u53caJNDI\u670d\u52a1\u5730\u5740\u7cfb\u7edf\u5c5e\u6027\uff0c\u67e5\u627eHome\u63a5\u53e3\uff0c\u4eceHome\u63a5\u53e3\u8c03\u7528Create\u65b9\u6cd5\u521b\u5efaRemote\u63a5\u53e3\uff0c\u901a\u8fc7Remote\u63a5\u53e3\u8c03\u7528\u5176\u4e1a\u52a1\u65b9\u6cd5\u3002<\/p>\n

80\u3001\u5982\u4f55\u7ed9weblogic\u6307\u5b9a\u5927\u5c0f\u7684\u5185\u5b58?
\n\u5728\u542f\u52a8Weblogic\u7684\u811a\u672c\u4e2d\uff08\u4f4d\u4e8e\u6240\u5728Domian\u5bf9\u5e94\u670d\u52a1\u5668\u76ee\u5f55\u4e0b\u7684startServerName\uff09\uff0c\u589e\u52a0set MEM_ARGS=-Xms32m -Xmx200m\uff0c\u53ef\u4ee5\u8c03\u6574\u6700\u5c0f\u5185\u5b58\u4e3a32M\uff0c\u6700\u5927200M<\/p>\n

81\u3001\u5982\u4f55\u8bbe\u5b9a\u7684weblogic\u7684\u70ed\u542f\u52a8\u6a21\u5f0f(\u5f00\u53d1\u6a21\u5f0f)\u4e0e\u4ea7\u54c1\u53d1\u5e03\u6a21\u5f0f?
\n\u53ef\u4ee5\u5728\u7ba1\u7406\u63a7\u5236\u53f0\u4e2d\u4fee\u6539\u5bf9\u5e94\u670d\u52a1\u5668\u7684\u542f\u52a8\u6a21\u5f0f\u4e3a\u5f00\u53d1\u6216\u4ea7\u54c1\u6a21\u5f0f\u4e4b\u4e00\u3002\u6216\u8005\u4fee\u6539\u670d\u52a1\u7684\u542f\u52a8\u6587\u4ef6\u6216\u8005commenv\u6587\u4ef6\uff0c\u589e\u52a0set PRODUCTION_MODE=true\u3002<\/p>\n

82\u3001\u5982\u4f55\u542f\u52a8\u65f6\u4e0d\u9700\u8f93\u5165\u7528\u6237\u540d\u4e0e\u5bc6\u7801?
\n\u4fee\u6539\u670d\u52a1\u542f\u52a8\u6587\u4ef6\uff0c\u589e\u52a0 WLS_USER\u548cWLS_PW\u9879\u3002\u4e5f\u53ef\u4ee5\u5728boot.properties\u6587\u4ef6\u4e2d\u589e\u52a0\u52a0\u5bc6\u8fc7\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801.<\/p>\n

83\u3001\u5728weblogic\u7ba1\u7406\u5236\u53f0\u4e2d\u5bf9\u4e00\u4e2a\u5e94\u7528\u57df(\u6216\u8005\u8bf4\u662f\u4e00\u4e2a\u7f51\u7ad9,Domain)\u8fdb\u884cjms\u53caejb\u6216\u8fde\u63a5\u6c60\u7b49\u76f8\u5173\u4fe1\u606f\u8fdb\u884c\u914d\u7f6e\u540e,\u5b9e\u9645\u4fdd\u5b58\u5728\u4ec0\u4e48\u6587\u4ef6\u4e2d?
\n\u4fdd\u5b58\u5728\u6b64Domain\u7684config.xml\u6587\u4ef6\u4e2d\uff0c\u5b83\u662f\u670d\u52a1\u5668\u7684\u6838\u5fc3\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n

84\u3001\u8bf4\u8bf4weblogic\u4e2d\u4e00\u4e2aDomain\u7684\u7f3a\u7701\u76ee\u5f55\u7ed3\u6784?\u6bd4\u5982\u8981\u5c06\u4e00\u4e2a\u7b80\u5355\u7684helloWorld.jsp\u653e\u5165\u4f55\u76ee\u5f55\u4e0b,\u7136\u7684\u5728\u6d4f\u89c8\u5668\u4e0a\u5c31\u53ef\u6253\u5165 http:\/\/\u4e3b\u673a:\u7aef\u53e3\u53f7\/\/helloword.jsp\u5c31\u53ef\u4ee5\u770b\u5230\u8fd0\u884c\u7ed3\u679c\u4e86? \u53c8\u6bd4\u5982\u8fd9\u5176\u4e2d\u7528\u5230\u4e86\u4e00\u4e2a\u81ea\u5df1\u5199\u7684javaBean\u8be5\u5982\u4f55\u529e?
\nDomain \u76ee\u5f55\u670d\u52a1\u5668\u76ee\u5f55applications\uff0c\u5c06\u5e94\u7528\u76ee\u5f55\u653e\u5728\u6b64\u76ee\u5f55\u4e0b\u5c06\u53ef\u4ee5\u4f5c\u4e3a\u5e94\u7528\u8bbf\u95ee\uff0c\u5982\u679c\u662fWeb\u5e94\u7528\uff0c\u5e94\u7528\u76ee\u5f55\u9700\u8981\u6ee1\u8db3Web\u5e94\u7528\u76ee\u5f55\u8981\u6c42\uff0cjsp\u6587 \u4ef6\u53ef\u4ee5\u76f4\u63a5\u653e\u5728\u5e94\u7528\u76ee\u5f55\u4e2d\uff0cJavabean\u9700\u8981\u653e\u5728\u5e94\u7528\u76ee\u5f55\u7684WEB-INF\u76ee\u5f55\u7684classes\u76ee\u5f55\u4e2d\uff0c\u8bbe\u7f6e\u670d\u52a1\u5668\u7684\u7f3a\u7701\u5e94\u7528\u5c06\u53ef\u4ee5\u5b9e\u73b0\u5728\u6d4f\u89c8\u5668\u4e0a\u65e0 \u9700\u8f93\u5165\u5e94\u7528\u540d\u3002<\/p>\n

85\u3001\u5728weblogic\u4e2d\u53d1\u5e03ejb\u9700\u6d89\u53ca\u5230\u54ea\u4e9b\u914d\u7f6e\u6587\u4ef6
\n\u4e0d\u540c\u7c7b\u578b\u7684EJB\u6d89\u53ca\u7684\u914d\u7f6e\u6587\u4ef6\u4e0d\u540c\uff0c\u90fd\u6d89\u53ca\u5230\u7684\u914d\u7f6e\u6587\u4ef6\u5305\u62ecejb-jar.xml,weblogic-ejb-jar.xmlCMP\u5b9e\u4f53Bean\u4e00\u822c\u8fd8\u9700\u8981weblogic-cmp-rdbms-jar.xml<\/p>\n

86\u3001\u5982\u4f55\u5728weblogic\u4e2d\u8fdb\u884cssl\u914d\u7f6e\u4e0e\u5ba2\u6237\u7aef\u7684\u8ba4\u8bc1\u914d\u7f6e\u6216\u8bf4\u8bf4j2ee(\u6807\u51c6)\u8fdb\u884cssl\u7684\u914d\u7f6e
\n\u7f3a \u7701\u5b89\u88c5\u4e2d\u4f7f\u7528DemoIdentity.jks\u548cDemoTrust.jks KeyStore\u5b9e\u73b0SSL\uff0c\u9700\u8981\u914d\u7f6e\u670d\u52a1\u5668\u4f7f\u7528Enable SSL\uff0c\u914d\u7f6e\u5176\u7aef\u53e3\uff0c\u5728\u4ea7\u54c1\u6a21\u5f0f\u4e0b\u9700\u8981\u4eceCA\u83b7\u53d6\u79c1\u6709\u5bc6\u94a5\u548c\u6570\u5b57\u8bc1\u4e66\uff0c\u521b\u5efaidentity\u548ctrust keystore\uff0c\u88c5\u8f7d\u83b7\u5f97\u7684\u5bc6\u94a5\u548c\u6570\u5b57\u8bc1\u4e66\u3002\u53ef\u4ee5\u914d\u7f6e\u6b64SSL\u8fde\u63a5\u662f\u5355\u5411\u8fd8\u662f\u53cc\u5411\u7684\u3002<\/p>\n

87\u3001\u5982\u4f55\u67e5\u770b\u5728weblogic\u4e2d\u5df2\u7ecf\u53d1\u5e03\u7684EJB?
\n\u53ef\u4ee5\u4f7f\u7528\u7ba1\u7406\u63a7\u5236\u53f0\uff0c\u5728\u5b83\u7684Deployment\u4e2d\u53ef\u4ee5\u67e5\u770b\u6240\u6709\u5df2\u53d1\u5e03\u7684EJB<\/p>\n

88\u3001CORBA\u662f\u4ec0\u4e48?\u7528\u9014\u662f\u4ec0\u4e48?
\nCORBA \u6807\u51c6\u662f\u516c\u5171\u5bf9\u8c61\u8bf7\u6c42\u4ee3\u7406\u7ed3\u6784(Common Object Request Broker Architecture)\uff0c\u7531\u5bf9\u8c61\u7ba1\u7406\u7ec4\u7ec7 (Object Management Group\uff0c\u7f29\u5199\u4e3a OMG)\u6807\u51c6\u5316\u3002\u5b83\u7684\u7ec4\u6210\u662f\u63a5\u53e3\u5b9a\u4e49\u8bed\u8a00(IDL), \u8bed\u8a00\u7ed1\u5b9a(binding:\u4e5f\u8bd1\u4e3a\u8054\u7f16)\u548c\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u95f4\u4e92\u64cd\u4f5c\u7684\u534f\u8bae\u3002 \u5176\u76ee\u7684\u4e3a\uff1a\u7528\u4e0d\u540c\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u4e66\u5199\u5728\u4e0d\u540c\u7684\u8fdb\u7a0b\u4e2d\u8fd0\u884c\uff0c\u4e3a\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u5f00\u53d1\u3002<\/p>\n

89\u3001\u8bf4\u8bf4\u4f60\u6240\u719f\u6089\u6216\u542c\u8bf4\u8fc7\u7684j2ee\u4e2d\u7684\u51e0\u79cd\u5e38\u7528\u6a21\u5f0f?\u53ca\u5bf9\u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e00\u4e9b\u770b\u6cd5
\nSession Facade Pattern\uff1a\u4f7f\u7528SessionBean\u8bbf\u95eeEntityBean
\nMessage Facade Pattern\uff1a\u5b9e\u73b0\u5f02\u6b65\u8c03\u7528
\nEJB Command Pattern\uff1a\u4f7f\u7528Command JavaBeans\u53d6\u4ee3SessionBean\uff0c\u5b9e\u73b0\u8f7b\u91cf\u7ea7\u8bbf\u95ee
\nData Transfer Object Factory\uff1a\u901a\u8fc7DTO Factory\u7b80\u5316EntityBean\u6570\u636e\u63d0\u4f9b\u7279\u6027
\nGeneric Attribute Access\uff1a\u901a\u8fc7AttibuteAccess\u63a5\u53e3\u7b80\u5316EntityBean\u6570\u636e\u63d0\u4f9b\u7279\u6027
\nBusiness Interface\uff1a\u901a\u8fc7\u8fdc\u7a0b\uff08\u672c\u5730\uff09\u63a5\u53e3\u548cBean\u7c7b\u5b9e\u73b0\u76f8\u540c\u63a5\u53e3\u89c4\u8303\u4e1a\u52a1\u903b\u8f91\u4e00\u81f4\u6027
\n\uff25\uff2a\uff22\u67b6\u6784\u7684\u8bbe\u8ba1\u597d\u574f\u5c06\u76f4\u63a5\u5f71\u54cd\u7cfb\u7edf\u7684\u6027\u80fd\u3001\u53ef\u6269\u5c55\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u3001\u7ec4\u4ef6\u53ef\u91cd\u7528\u6027\u53ca\u5f00\u53d1\u6548\u7387\u3002\u9879\u76ee\u8d8a\u590d\u6742\uff0c\u9879\u76ee\u961f\u4f0d\u8d8a\u5e9e\u5927\u5219\u8d8a\u80fd\u4f53\u73b0\u826f\u597d\u8bbe\u8ba1\u7684\u91cd\u8981\u6027\u3002<\/p>\n

90\u3001\u8bf4\u8bf4\u5728weblogic\u4e2d\u5f00\u53d1\u6d88\u606fBean\u65f6\u7684persistent\u4e0enon-persisten\u7684\u5dee\u522b
\npersistent\u65b9\u5f0f\u7684MDB\u53ef\u4ee5\u4fdd\u8bc1\u6d88\u606f\u4f20\u9012\u7684\u53ef\u9760\u6027,\u4e5f\u5c31\u662f\u5982\u679cEJB\u5bb9\u5668\u51fa\u73b0\u95ee\u9898\u800cJMS\u670d\u52a1\u5668\u4f9d\u7136\u4f1a\u5c06\u6d88\u606f\u5728\u6b64MDB\u53ef\u7528\u7684\u65f6\u5019\u53d1\u9001\u8fc7\u6765\uff0c\u800cnon\uff0dpersistent\u65b9\u5f0f\u7684\u6d88\u606f\u5c06\u88ab\u4e22\u5f03\u3002<\/p>\n

\u65e2\u7136\u6ca1\u6709\u6807\u51c6\u7b54\u6848\uff0c\u5c31\u6839\u636e\u81ea\u5df1\u7684\u6240\u4e86\u89e3\u7684\uff0c\u8865\u5145\u4fee\u6b63\u4e00\u4e0b\u597d\u4e86<\/p>\n

91\u3001Servlet\u6267\u884c\u65f6\u4e00\u822c\u5b9e\u73b0\u54ea\u51e0\u4e2a\u65b9\u6cd5\uff1f
\npublic void init(ServletConfig config)
\npublic ServletConfig getServletConfig()
\npublic String getServletInfo()
\npublic void service(ServletRequest request,ServletResponse response)
\npublic void destroy()<\/p>\n

init ()\u65b9\u6cd5\u5728servlet\u7684\u751f\u547d\u5468\u671f\u4e2d\u4ec5\u6267\u884c\u4e00\u6b21\uff0c\u5728\u670d\u52a1\u5668\u88c5\u8f7dservlet\u65f6\u6267\u884c\u3002\u7f3a\u7701\u7684init()\u65b9\u6cd5\u901a\u5e38\u662f\u7b26\u5408\u8981\u6c42\u7684\uff0c\u4e0d\u8fc7\u4e5f\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c override\uff0c\u6bd4\u5982\u7ba1\u7406\u670d\u52a1\u5668\u7aef\u8d44\u6e90\uff0c\u4e00\u6b21\u6027\u88c5\u5165GIF\u56fe\u50cf\uff0c\u521d\u59cb\u5316\u6570\u636e\u5e93\u8fde\u63a5\u7b49\uff0c\u7f3a\u7701\u7684inti()\u65b9\u6cd5\u8bbe\u7f6e\u4e86servlet\u7684\u521d\u59cb\u5316\u53c2\u6570\uff0c\u5e76\u7528\u5b83 \u7684ServeltConfig\u5bf9\u8c61\u53c2\u6570\u6765\u542f\u52a8\u914d\u7f6e\uff0c\u6240\u4ee5\u8986\u76d6init()\u65b9\u6cd5\u65f6\uff0c\u5e94\u8c03\u7528super.init()\u4ee5\u786e\u4fdd\u4ecd\u7136\u6267\u884c\u8fd9\u4e9b\u4efb\u52a1\u3002<\/p>\n

service ()\u65b9\u6cd5\u662fservlet\u7684\u6838\u5fc3\uff0c\u5728\u8c03\u7528service()\u65b9\u6cd5\u4e4b\u524d\uff0c\u5e94\u786e\u4fdd\u5df2\u5b8c\u6210init()\u65b9\u6cd5\u3002\u5bf9\u4e8eHttpServlet\uff0c\u6bcf\u5f53\u5ba2\u6237\u8bf7\u6c42\u4e00\u4e2a HttpServlet\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u7684service()\u65b9\u6cd5\u5c31\u8981\u88ab\u8c03\u7528\uff0cHttpServlet\u7f3a\u7701\u7684service()\u65b9\u6cd5\u7684\u670d\u52a1\u529f\u80fd\u5c31\u662f\u8c03\u7528\u4e0e HTTP\u8bf7\u6c42\u7684\u65b9\u6cd5\u76f8\u5e94\u7684do\u529f\u80fd\uff0cdoPost()\u548cdoGet()\uff0c\u6240\u4ee5\u5bf9\u4e8eHttpServlet\uff0c\u4e00\u822c\u90fd\u662f\u91cd\u5199doPost()\u548cdoGet() \u65b9\u6cd5\u3002<\/p>\n

destroy()\u65b9\u6cd5\u5728servlet\u7684\u751f\u547d\u5468\u671f\u4e2d\u4e5f\u4ec5\u6267\u884c\u4e00\u6b21\uff0c\u5373\u5728\u670d\u52a1\u5668\u505c\u6b62\u5378\u8f7dservlet\u65f6\u6267\u884c\uff0c\u628aservlet\u4f5c\u4e3a \u670d\u52a1\u5668\u8fdb\u7a0b\u7684\u4e00\u90e8\u5206\u5173\u95ed\u3002\u7f3a\u7701\u7684destroy()\u65b9\u6cd5\u901a\u5e38\u662f\u7b26\u5408\u8981\u6c42\u7684\uff0c\u4f46\u4e5f\u53ef\u4ee5override\uff0c\u6bd4\u5982\u5728\u5378\u8f7dservlet\u65f6\u5c06\u7edf\u8ba1\u6570\u5b57\u4fdd\u5b58\u5728\u6587\u4ef6 \u4e2d\uff0c\u6216\u662f\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/p>\n

getServletConfig()\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2aservletConfig\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u7528\u6765\u8fd4\u56de\u521d\u59cb\u5316\u53c2\u6570\u548cservletContext\u3002servletContext\u63a5\u53e3\u63d0\u4f9b\u6709\u5173servlet\u7684\u73af\u5883\u4fe1\u606f\u3002<\/p>\n

getServletInfo()\u65b9\u6cd5\u63d0\u4f9b\u6709\u5173servlet\u7684\u4fe1\u606f\uff0c\u5982\u4f5c\u8005\uff0c\u7248\u672c\uff0c\u7248\u6743\u3002<\/p>\n

92\u3001j2ee\u5e38\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\uff1f\u8bf4\u660e\u5de5\u5382\u6a21\u5f0f\u3002
\nJava\u4e2d\u768423\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff1a
\nFactory\uff08\u5de5\u5382\u6a21\u5f0f\uff09\uff0c Builder\uff08\u5efa\u9020\u6a21\u5f0f\uff09\uff0c Factory Method\uff08\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\uff09\uff0c
\nPrototype\uff08\u539f\u59cb\u6a21\u578b\u6a21\u5f0f\uff09\uff0cSingleton\uff08\u5355\u4f8b\u6a21\u5f0f\uff09\uff0c Facade\uff08\u95e8\u9762\u6a21\u5f0f\uff09\uff0c
\nAdapter\uff08\u9002\u914d\u5668\u6a21\u5f0f\uff09\uff0c Bridge\uff08\u6865\u6881\u6a21\u5f0f\uff09\uff0c Composite\uff08\u5408\u6210\u6a21\u5f0f\uff09\uff0c
\nDecorator\uff08\u88c5\u9970\u6a21\u5f0f\uff09\uff0c Flyweight\uff08\u4eab\u5143\u6a21\u5f0f\uff09\uff0c Proxy\uff08\u4ee3\u7406\u6a21\u5f0f\uff09\uff0c
\nCommand\uff08\u547d\u4ee4\u6a21\u5f0f\uff09\uff0c Interpreter\uff08\u89e3\u91ca\u5668\u6a21\u5f0f\uff09\uff0c Visitor\uff08\u8bbf\u95ee\u8005\u6a21\u5f0f\uff09\uff0c
\nIterator\uff08\u8fed\u4ee3\u5b50\u6a21\u5f0f\uff09\uff0c Mediator\uff08\u8c03\u505c\u8005\u6a21\u5f0f\uff09\uff0c Memento\uff08\u5907\u5fd8\u5f55\u6a21\u5f0f\uff09\uff0c
\nObserver\uff08\u89c2\u5bdf\u8005\u6a21\u5f0f\uff09\uff0c State\uff08\u72b6\u6001\u6a21\u5f0f\uff09\uff0c Strategy\uff08\u7b56\u7565\u6a21\u5f0f\uff09\uff0c
\nTemplate Method\uff08\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\uff09\uff0c Chain Of Responsibleity\uff08\u8d23\u4efb\u94fe\u6a21\u5f0f\uff09
\n\u5de5 \u5382\u6a21\u5f0f\uff1a\u5de5\u5382\u6a21\u5f0f\u662f\u4e00\u79cd\u7ecf\u5e38\u88ab\u4f7f\u7528\u5230\u7684\u6a21\u5f0f\uff0c\u6839\u636e\u5de5\u5382\u6a21\u5f0f\u5b9e\u73b0\u7684\u7c7b\u53ef\u4ee5\u6839\u636e\u63d0\u4f9b\u7684\u6570\u636e\u751f\u6210\u4e00\u7ec4\u7c7b\u4e2d\u67d0\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u901a\u5e38\u8fd9\u4e00\u7ec4\u7c7b\u6709\u4e00\u4e2a\u516c\u5171\u7684\u62bd\u8c61\u7236\u7c7b\u5e76\u4e14 \u5b9e\u73b0\u4e86\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u4f46\u662f\u8fd9\u4e9b\u65b9\u6cd5\u9488\u5bf9\u4e0d\u540c\u7684\u6570\u636e\u8fdb\u884c\u4e86\u4e0d\u540c\u7684\u64cd\u4f5c\u3002\u9996\u5148\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u57fa\u7c7b\uff0c\u8be5\u7c7b\u7684\u5b50\u7c7b\u901a\u8fc7\u4e0d\u540c\u7684\u65b9\u6cd5\u5b9e\u73b0\u4e86\u57fa\u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002\u7136\u540e\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a \u5de5\u5382\u7c7b\uff0c\u5de5\u5382\u7c7b\u53ef\u4ee5\u6839\u636e\u6761\u4ef6\u751f\u6210\u4e0d\u540c\u7684\u5b50\u7c7b\u5b9e\u4f8b\u3002\u5f53\u5f97\u5230\u5b50\u7c7b\u7684\u5b9e\u4f8b\u540e\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u8c03\u7528\u57fa\u7c7b\u4e2d\u7684\u65b9\u6cd5\u800c\u4e0d\u5fc5\u8003\u8651\u5230\u5e95\u8fd4\u56de\u7684\u662f\u54ea\u4e00\u4e2a\u5b50\u7c7b\u7684\u5b9e\u4f8b\u3002<\/p>\n

93\u3001EJB\u9700\u76f4\u63a5\u5b9e\u73b0\u5b83\u7684\u4e1a\u52a1\u63a5\u53e3\u6216Home\u63a5\u53e3\u5417\uff0c\u8bf7\u7b80\u8ff0\u7406\u7531\u3002
\n\u8fdc\u7a0b\u63a5\u53e3\u548cHome\u63a5\u53e3\u4e0d\u9700\u8981\u76f4\u63a5\u5b9e\u73b0\uff0c\u4ed6\u4eec\u7684\u5b9e\u73b0\u4ee3\u7801\u662f\u7531\u670d\u52a1\u5668\u4ea7\u751f\u7684\uff0c\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u5bf9\u5e94\u5b9e\u73b0\u7c7b\u4f1a\u4f5c\u4e3a\u5bf9\u5e94\u63a5\u53e3\u7c7b\u578b\u7684\u5b9e\u4f8b\u88ab\u4f7f\u7528\u3002<\/p>\n

\u5176\u5b9e\u4e00\u76f4\u90fd\u4e0d\u662f\u5f88\u660e\u767dEJB\u7684remote\u63a5\u53e3\uff0chome\u63a5\u53e3\uff0cBean\u7c7b\u7a76\u7adf\u662f\u5982\u4f55\u4f7f\u7528\u7684\uff0c\u6216\u8bb8\u5e94\u8be5\u8fdb\u4e00\u6b65\u4e86\u89e3EJB\u7684\u539f\u7406\u5427\uff0c\u67e5\u5230\u4e86\u4e00\u4e2a\u539f\u521b\u6587\u7ae0\uff0c\u90a3\u5c31\u8bf4\u8bf4EJB\u8c03\u7528\u7684\u539f\u7406\u5427\u3002\u5176\u5b9e\u5728\u8fd9\u4e2a\u95ee\u9898\u4e0a\uff0c\u6700\u9700\u8981\u7406\u89e3\u7684\u662fRMI\u673a\u5236\u539f\u7406\u3002<\/p>\n

\u4e00\u4e2a\u8fdc\u7a0b\u5bf9\u8c61\u81f3\u5c11\u8981\u5305\u62ec4\u4e2aclass\u6587\u4ef6\uff1a\u8fdc\u7a0b\u5bf9\u8c61\u3001\u8fdc\u7a0b\u5bf9\u8c61\u63a5\u53e3\u3001\u5b9e\u73b0\u8fdc\u7a0b\u63a5\u53e3\u7684\u5bf9\u8c61\u7684stub\u3001\u5bf9\u8c61\u7684skeleton\u3002<\/p>\n

\u800c\u5728EJB\u4e2d\u5219\u81f3\u5c11\u8981\u5305\u62ec10\u4e2aclass:
\nBean\u7c7b\uff0c\u7279\u5b9aApp Server\u7684Bean\u5b9e\u73b0\u7c7b
\nBean\u7684remote\u63a5\u53e3\uff0c\u7279\u5b9aApp Server\u7684remote\u63a5\u53e3\u5b9e\u73b0\u7c7b\uff0c\u7279\u5b9aApp Server\u7684remote\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u548cskeleton\u7c7b\u3002
\nBean\u7684home\u63a5\u53e3\uff0c\u7279\u5b9aApp Server\u7684home\u63a5\u53e3\u5b9e\u73b0\u7c7b\uff0c\u7279\u5b9aApp Server\u7684home\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u548cskeleton\u7c7b\u3002<\/p>\n

\u548cRMI\u4e0d\u540c\u7684\u662f\uff0cEJB\u4e2d\u8fd910\u4e2aclass\u771f\u6b63\u9700\u8981\u7528\u6237\u5199\u7684\u53ea\u67093\u4e2a\uff0cBean\u7c7b\uff0cremote\u63a5\u53e3\uff0chome\u63a5\u53e3\uff0c\u5176\u5b83\u76847\u4e2a\u7a76\u7adf\u600e\u4e48\u751f\u6210\uff0c\u88ab\u6253\u5305\u5728\u54ea\u91cc\uff0c\u662f\u5426\u9700\u8981\u66f4\u591a\u7684\u7c7b\u6587\u4ef6\uff0c\u5426\u6839\u636e\u4e0d\u540c\u7684App Server\u8868\u73b0\u51fa\u8f83\u5927\u7684\u5dee\u5f02\u3002<\/p>\n

Weblogic\uff1a
\nhome\u63a5\u53e3\u548cremote\u63a5\u53e3\u7684weblogic\u7684\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u548cskeleton\u7c7b\u662f\u5728EJB\u88ab\u90e8\u7f72\u5230weblogic\u7684\u65f6\u5019\uff0c\u7531weblogic\u52a8\u6001\u751f\u6210stub\u7c7b\u548cskeleton\u7c7b\u7684\u5b57\u8282\u7801\uff0c\u6240\u4ee5\u770b\u4e0d\u5230\u8fd94\u4e2a\u7c7b\u6587\u4ef6\u3002<\/p>\n

\u5bf9 \u4e8e\u4e00\u6b21\u5ba2\u6237\u7aef\u8fdc\u7a0b\u8c03\u7528EJB\uff0c\u8981\u7ecf\u8fc7\u4e24\u4e2a\u8fdc\u7a0b\u5bf9\u8c61\u7684\u591a\u6b21RMI\u5faa\u73af\u3002\u9996\u5148\u662f\u901a\u8fc7JNDI\u67e5\u627eHome\u63a5\u53e3\uff0c\u83b7\u5f97Home\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5176\u5b9e\u76f8\u5f53\u590d \u6742\uff0c\u9996\u5148\u662f\u627e\u5230Home\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2aHome\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5c06\u5b83\u5e8f\u5217\u5316\u4f20\u9001\u7ed9\u5ba2\u6237 \u7aef\uff08\u6ce8\u610fstub\u7c7b\u7684\u5b9e\u4f8b\u662f\u5728\u7b2c1\u6b21RMI\u5faa\u73af\u4e2d\uff0c\u7531\u670d\u52a1\u5668\u52a8\u6001\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u7684\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u5ba2\u6237\u7aef\u4fdd\u5b58Home\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub \u7c7b\uff09\uff0c\u6700\u540e\u5ba2\u6237\u7aef\u83b7\u5f97\u8be5stub\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff08\u666e\u901a\u7684RMI\u9700\u8981\u5728\u5ba2\u6237\u7aef\u4fdd\u5b58stub\u7c7b\uff0c\u800cEJB\u4e0d\u9700\u8981\uff0c\u56e0\u4e3a\u670d\u52a1\u5668\u4f1a\u628astub\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\u53d1\u9001\u7ed9\u5ba2\u6237 \u7aef\uff09\u3002<\/p>\n

\u5ba2\u6237\u7aef\u62ff\u5230\u670d\u52a1\u5668\u7ed9\u5b83\u7684Home\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u5bf9\u8c61\u5b9e\u4f8b\u4ee5\u540e\uff0c\u8c03\u7528stub\u7c7b\u7684create\u65b9\u6cd5\uff0c (\u5728\u4ee3\u7801\u4e0a\u5c31\u662fhome.create()\uff0c\u4f46\u662f\u540e\u53f0\u8981\u505a\u5f88\u591a\u4e8b\u60c5),\u4e8e\u662f\u7ecf\u8fc7\u7b2c2\u6b21RMI\u5faa\u73af\uff0c\u5728\u670d\u52a1\u5668\u7aef\uff0cHome\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684 skeleton\u7c7b\u6536\u5230stub\u7c7b\u7684\u8c03\u7528\u4fe1\u606f\u540e\uff0c\u7531\u5b83\u518d\u53bb\u8c03\u7528Home\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684create\u65b9\u6cd5\u3002<\/p>\n

\u5728\u670d\u52a1\u7aef\uff0cHome \u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684create\u65b9\u6cd5\u518d\u53bb\u8c03\u7528Bean\u7c7b\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684ejbCreate\u65b9\u6cd5\uff0c\u5728\u670d\u52a1\u7aef\u521b\u5efa\u6216\u8005\u5206\u914d\u4e00\u4e2aEJB \u5b9e\u4f8b\uff0c\u7136\u540e\u5c06\u8fd9\u4e2aEJB\u5b9e\u4f8b\u7684\u8fdc\u7a0b\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u5bf9\u8c61\u5b9e\u4f8b\u5e8f\u5217\u5316\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n

\u5ba2\u6237\u7aef\u6536\u5230remote\u63a5 \u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5bf9\u8be5\u5bf9\u8c61\u5b9e\u4f8b\u7684\u65b9\u6cd5\u8c03\u7528\uff08\u5728\u5ba2\u6237\u7aef\u4ee3\u7801\u4e2d\u5b9e\u9645\u4e0a\u5c31\u662f\u5bf9remote\u63a5\u53e3\u7684\u8c03\u7528\uff09\uff0c\u5c06\u4f20\u9001\u7ed9\u670d\u52a1\u5668\u7aef remote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684skeleton\u7c7b\u5bf9\u8c61\uff0c\u800cskeleton\u7c7b\u5bf9\u8c61\u518d\u8c03\u7528\u76f8\u5e94\u7684remote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\uff0c \u7136\u540eremote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u518d\u53bb\u8c03\u7528Bean\u7c7b\u7684Weblogic\u5b9e\u73b0\u7c7b\uff0c\u5982\u6b64\u5c31\u5b8c\u6210\u4e00\u6b21EJB\u5bf9\u8c61\u7684\u8fdc\u7a0b\u8c03\u7528\u3002<\/p>\n

\u5148\u62ff\u666e\u901aRMI\u6765\u8bf4\uff0c\u67094\u4e2aclass\uff0c\u5206\u522b\u662f\u8fdc\u7a0b\u5bf9\u8c61\uff0c\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u5bf9\u8c61\u7684stub\u7c7b\u548cskeleton\u7c7b\u3002\u800c\u5bf9\u8c61\u672c\u8eab\u548c\u5bf9\u8c61\u7684stub\u7c7b\u540c\u65f6\u90fd\u5b9e\u73b0\u4e86\u63a5\u53e3\u7c7b\u3002\u800c\u6211\u4eec\u5728\u5ba2\u6237\u7aef\u4ee3\u7801\u8c03\u7528\u8fdc\u7a0b\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u867d\u7136\u5728\u4ee3\u7801\u4e2d\u64cd\u7eb5\u63a5\u53e3\uff0c\u5b9e\u8d28\u4e0a\u662f\u5728\u64cd\u7eb5stub\u7c7b\uff0c\u4f8b\u5982\uff1a
\n\u63a5\u53e3\u7c7b\uff1aHello
\n\u8fdc\u7a0b\u5bf9\u8c61\uff1aHello_Server
\nstub\u7c7b\uff1aHello_Stub
\nskeleton\u7c7b\uff1aHello_Skeleton<\/p>\n

\u5ba2\u6237\u7aef\u4ee3\u7801\u8981\u8fd9\u6837\u5199\uff1a
\nHello h = new Hello_Stub();
\nh.getString();<\/p>\n

\u6211\u4eec\u4e0d\u4f1a\u8fd9\u4e9b\u5199\uff1a
\nHello_Stub h = new Hello_Stub();
\nh.getString();<\/p>\n

\u56e0 \u4e3a\u4f7f\u7528\u63a5\u53e3\u9002\u7528\u6027\u66f4\u5e7f\uff0c\u5c31\u7b97\u66f4\u6362\u4e86\u63a5\u53e3\u5b9e\u73b0\u7c7b\uff0c\u4e5f\u4e0d\u9700\u8981\u66f4\u6539\u4ee3\u7801\u3002\u56e0\u6b64\u5ba2\u6237\u7aef\u9700\u8981Hello.class\u548cHello_Stub.class\u8fd9\u4e24\u4e2a\u6587\u4ef6\u3002 \u4f46\u662f\u5bf9\u4e8eEJB\u6765\u8bf4\uff0c\u5c31\u4e0d\u9700\u8981Hello_Stub.class\uff0c\u56e0\u4e3a\u670d\u52a1\u5668\u4f1a\u53d1\u9001\u7ed9\u5b83\uff0c\u4f46\u662fHello.class\u6587\u4ef6\u5ba2\u6237\u7aef\u662f\u7701\u4e0d\u4e86\u7684\uff0c\u5fc5\u987b\u6709\u3002\u8868\u9762 \u4e0a\u6211\u4eec\u7684\u5ba2\u6237\u7aef\u4ee3\u7801\u5728\u64cd\u7eb5Hello\uff0c\u4f46\u522b\u5fd8\u8bb0\u4e86Hello\u53ea\u662f\u4e00\u4e2a\u63a5\u53e3\uff0c\u62bd\u8c61\u7684\uff0c\u5b9e\u8d28\u4e0a\u662f\u5728\u64cd\u7eb5Hello_Stub\u3002<\/p>\n

\u62ffWeblogic\u4e0a\u7684EJB\u4e3e\u4f8b\u5b50\uff0c10\u4e2aclass\u5206\u522b\u662f\uff1a
\nBean\u7c7b\uff1aHelloBean \uff08\u7528\u6237\u7f16\u5199\uff09
\nBean\u7c7b\u7684Weblogic\u5b9e\u73b0\u7c7b\uff1aHelloBean_Impl \uff08EJBC\u751f\u6210\uff09<\/p>\n

Home\u63a5\u53e3\uff1aHelloHome \uff08\u7528\u6237\u7f16\u5199\uff09
\nHome\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b HelloBean_HomeImpl\uff08EJBC\u751f\u6210\uff09
\nHome\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b HelloBean_HomeImpl_WLStub\uff08\u90e8\u7f72\u7684\u65f6\u5019\u52a8\u6001\u751f\u6210\u5b57\u8282\u7801\uff09
\nHome\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684skeleton\u7c7b HelloBean_HomeImpl_WLSkeleton\uff08\u90e8\u7f72\u7684\u65f6\u5019\u52a8\u6001\u751f\u6210\u5b57\u8282\u7801\uff09<\/p>\n

Remote\u63a5\u53e3\uff1a Hello \uff08\u7528\u6237\u7f16\u5199\uff09
\nRemote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b HelloBean_EOImpl\uff08EJBC\u751f\u6210\uff09
\nRemote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684stub\u7c7b HelloBean_EOImpl_WLStub\uff08\u90e8\u7f72\u7684\u65f6\u5019\u52a8\u6001\u751f\u6210\u5b57\u8282\u7801\uff09
\nRemote\u63a5\u53e3\u7684Weblogic\u5b9e\u73b0\u7c7b\u7684skeleton\u7c7b HelloBean_EOImpl_WLSkeleton\uff08\u90e8\u7f72\u7684\u65f6\u5019\u52a8\u6001\u751f\u6210\u5b57\u8282\u7801\uff09<\/p>\n

\u5ba2\u6237\u7aef\u53ea\u9700\u8981Hello.class\u548cHelloHome.class\u8fd9\u4e24\u4e2a\u6587\u4ef6\u3002<\/p>\n

HelloHome home = (Home) PortableRemoteObject.narrow(ctx.lookup("Hello"), HelloHome.class);<\/p>\n

\u8fd9\u4e00\u884c\u4ee3\u7801\u662f\u4eceJNDI\u83b7\u5f97Home\u63a5\u53e3\uff0c\u4f46\u662f\u8bf7\u8bb0\u4f4f\uff01\u63a5\u53e3\u662f\u62bd\u8c61\u7684\uff0c\u90a3\u4e48home\u8fd9\u4e2a\u5bf9\u8c61\u5230\u5e95\u662f\u4ec0\u4e48\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\u5462\uff1f\u5f88\u7b80\u5355\uff0c\u7528toString()\u8f93\u51fa\u770b\u4e00\u4e0b\u5c31\u660e\u767d\u4e86\uff0c\u4e0b\u9762\u4e00\u884c\u662f\u8f93\u51fa\u7ed3\u679c\uff1a
\nHelloBean_HomeImpl_WLStub@18c458
\n\u8fd9\u8868\u660ehome\u8fd9\u4e2a\u901a\u8fc7\u4ece\u670d\u52a1\u5668\u7684JNDI\u6811\u4e0a\u67e5\u627e\u83b7\u5f97\u7684\u5bf9\u8c61\u5b9e\u9645\u4e0a\u662fHelloBean_HomeImpl_WLStub\u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002
\n\u63a5\u4e0b\u6765\u5ba2\u6237\u7aef\u4ee3\u7801\uff1a<\/p>\n

Hello h = home.create()<\/p>\n

\u540c\u6837Hello\u53ea\u662f\u4e00\u4e2a\u62bd\u8c61\u7684\u63a5\u53e3\uff0c\u90a3\u4e48h\u5bf9\u8c61\u662f\u4ec0\u4e48\u4e1c\u897f\u5462\uff1f\u6253\u5370\u4e00\u4e0b\uff1a
\nHelloBean_EOImpl_WLStub@8fa0d1
\n\u539f\u6765\u662fHelloBean_EOImpl_WLStub\u7684\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/p>\n

\u7528\u8fd9\u4e2a\u4f8b\u5b50\u6765\u7b80\u8ff0\u4e00\u904dEJB\u8c03\u7528\u8fc7\u7a0b\uff1a<\/p>\n

\u9996\u5148\u5ba2\u6237\u7aefJNDI\u67e5\u8be2\uff0c\u670d\u52a1\u7aefJNDI\u6811\u4e0aHello\u8fd9\u4e2a\u540d\u5b57\u5b9e\u9645\u4e0a\u7ed1\u5b9a\u7684\u5bf9\u8c61\u662fHelloBean_HomeImpl_WLStub\uff0c\u6240\u4ee5\u670d\u52a1\u7aef\u5c06\u521b\u5efaHelloBean_HomeImpl_WLStub\u7684\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5e8f\u5217\u5316\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n

\u4e8e \u662f\u5ba2\u6237\u7aef\u5f97\u5230home\u5bf9\u8c61\uff0c\u8868\u9762\u4e0a\u662f\u5f97\u5230HelloHome\u63a5\u53e3\u7684\u5b9e\u4f8b\uff0c\u5b9e\u9645\u4e0a\u662f\u8fdb\u884c\u4e86\u4e00\u6b21\u8fdc\u7a0b\u8c03\u7528\u5f97\u5230\u4e86 HelloBean_HomeImpl_WLStub\u7c7b\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u522b\u5fd8\u8bb0\u4e86HelloBean_HomeImpl_WLStub\u4e5f\u5b9e\u73b0\u4e86 HelloHome\u63a5\u53e3\u3002<\/p>\n

\u7136\u540ehome.create()\u5b9e\u8d28\u4e0a\u5c31\u662f HelloBean_HomeImpl_WLStub.create()\uff0c\u8be5\u65b9\u6cd5\u5c06\u53d1\u9001\u4fe1\u606f\u7ed9 HelloBean_HomeImpl_WLSkeleton\uff0c\u800cHelloBean_HomeImpl_WLSkeleton\u63a5\u53d7\u5230\u4fe1\u606f\u540e\uff0c\u518d\u53bb\u8c03\u7528 HelloBean_HomeImpl\u7684create\u65b9\u6cd5\uff0c\u81f3\u6b64\u5b8c\u6210\u7b2c1\u6b21\u5b8c\u6574\u7684RMI\u5faa\u73af\u3002<\/p>\n

\u6ce8\u610f\u5728\u8fd9\u6b21RMI\u5faa\u73af\u8fc7\u7a0b\u4e2d\uff0c\u8fdc\u7a0b\u5bf9\u8c61 \u662fHelloBean_HomeImpl\uff0c\u8fdc\u7a0b\u5bf9\u8c61\u7684\u63a5\u53e3\u662fHelloHome\uff0c\u5bf9\u8c61\u7684stub\u662fHelloBean_HomeImpl_WLStub\uff0c \u5bf9\u8c61\u7684skeleton\u662fHelloBean_HomeImpl_WLSkeleton\u3002<\/p>\n

\u7136\u540eHelloBean_HomeImpl \u518d\u53bb\u8c03\u7528HelloBean_Impl\u7684ejbCreate\u65b9\u6cd5\uff0c\u800cHelloBean_Impl\u7684ejbCreate\u65b9\u6cd5\u5c06\u8d1f\u8d23\u521b\u5efa\u6216\u8005\u5206\u914d\u4e00\u4e2a Bean\u5b9e\u4f8b\uff0c\u5e76\u4e14\u521b\u5efa\u4e00\u4e2aHelloBean_EOImpl_WLStub\u7684\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/p>\n

\u8fd9\u4e00\u6b65\u6bd4\u8f83\u6709\u8da3\u7684\u662f\uff0c\u5728\u524d\u4e00\u6b65RMI\u5faa\u73af \u4e2d\uff0c\u8fdc\u7a0b\u5bf9\u8c61HelloBean_HomeImpl\u5728\u5ba2\u6237\u7aef\u6709\u4e00\u4e2a\u4ee3\u7406\u7c7bHelloBean_HomeImpl_WLStub\uff0c\u4f46\u5728\u8fd9\u4e00\u6b65\uff0c HelloBean_HomeImpl\u81ea\u5df1\u5374\u5145\u5f53\u4e86HelloBean_Impl\u7684\u4ee3\u7406\u7c7b\uff0c\u53ea\u4e0d\u8fc7HelloBean_HomeImpl\u4e0d\u5728\u5ba2\u6237\u7aef\uff0c\u800c\u662f \u5728\u670d\u52a1\u7aef\uff0c\u56e0\u6b64\u4e0d\u8fdb\u884cRMI\u3002<\/p>\n

\u7136\u540eHelloBean_EOImpl_WLStub\u7684\u5bf9\u8c61\u5b9e\u4f8b\u5e8f\u5217\u5316\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u8fd9\u4e00\u6b65\u4e5f\u5f88\u6709\u8da3\uff0c \u4e0a\u6b21RMI\u8fc7\u7a0b\uff0c\u4e3b\u89d2\u662fHelloBean_HomeImpl\u548c\u5b83\u7684\u4ee3\u7406\u7c7bHelloBean_HomeImpl_WLStub\uff0c\u4f46\u8fd9\u8fd9\u4e00\u6b21\u6362\u6210\u4e86 HelloBean_EOImpl\u548c\u5b83\u7684\u4ee3\u7406\u7c7bHelloBean_EOImpl_WLStub\u6765\u73a9\u4e86\u3002<\/p>\n

Hello h = home.create();h.helloWorld();<\/p>\n

\u5047\u8bbeHello\u63a5\u53e3\u6709\u4e00\u4e2ahelloWorld\u8fdc\u7a0b\u65b9\u6cd5\uff0c\u90a3\u4e48\u8868\u9762\u4e0a\u662f\u5728\u8c03\u7528Hello\u63a5\u53e3\u7684helloWorld\u65b9\u6cd5\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u8c03\u7528HelloBean_EOImpl_WLStub\u7684helloWorld\u65b9\u6cd5\u3002<\/p>\n

\u7136 \u540eHelloBean_EOImpl_WLStub\u7684helloWorld\u65b9\u6cd5\u5c06\u53d1\u9001\u4fe1\u606f\u7ed9\u670d\u52a1\u5668\u4e0a\u7684 HelloBean_EOImpl_WLSkeleton\uff0c\u800cHelloBean_EOImpl_WLSkeleton\u6536\u5230\u4fe1\u606f\u4ee5\u540e\uff0c\u518d\u53bb\u8c03\u7528 HelloBean_EOImpl\u7684helloWorld\u65b9\u6cd5\u3002\u81f3\u6b64\uff0c\u5b8c\u6210\u7b2c2\u6b21\u5b8c\u6574\u7684RMI\u5faa\u73af\u8fc7\u7a0b\u3002<\/p>\n

\u5728\u521a\u624d HelloBean_EOImpl\u662f\u4f5c\u4e3a\u8fdc\u7a0b\u5bf9\u8c61\u88ab\u8c03\u7528\u7684\uff0c\u5b83\u7684\u4ee3\u7406\u7c7b\u662fHelloBean_EOImpl_WLStub\uff0c\u4f46\u73b0\u5728 HelloBean_EOImpl\u8981\u4f5c\u4e3aHelloBean_Impl\u7684\u4ee3\u7406\u7c7b\u4e86\u3002\u73b0\u5728HelloBean_EOImpl\u53bb\u8c03\u7528 HelloBean_Impl\u7684helloWorld\u65b9\u6cd5\u3002\u6ce8\u610f\uff01HelloBean_Impl\u7ee7\u627f\u4e86HelloBean\uff0c\u800cHelloBean\u4e2d\u7684 helloWorld\u65b9\u6cd5\u662f\u6211\u4eec\u4eb2\u81ea\u7f16\u5199\u7684\u4ee3\u7801\uff0c\u73b0\u5728\u7ec8\u4e8e\u8c03\u7528\u5230\u4e86\u6211\u4eec\u7f16\u5199\u7684\u4ee3\u7801\u4e86\uff01<\/p>\n

\u81f3\u6b64\uff0c\u4e00\u6b21EJB\u8c03\u7528\u8fc7\u7a0b\u7ec8\u4e8e\u5b8c\u6210\u3002\u5728\u6574\u4e2a\u8fc7\u7a0b \u4e2d\uff0c\u670d\u52a1\u7aef\u4e3b\u8981\u8981\u8c03\u7528\u7684\u7c7b\u662fHelloBean_Impl\uff0c HelloBean_HomeImpl\uff0cHelloBean_HomeImpl_WLSkeleton\uff0cHelloBean_EOImpl\uff0c HelloBean_EOImpl_WLSkeleton\u3002\u5ba2\u6237\u7aef\u4e3b\u8981\u8c03\u7528\u7684\u7c7b\u662fHelloBean_HomeImpl_WLStub\uff0c HelloBean_EOImpl_WLStub\uff0c\u8fd9\u4e24\u4e2a\u7c7b\u5728\u5ba2\u6237\u7aef\u4ee3\u7801\u4e2d\u5e76\u4e0d\u4f1a\u76f4\u63a5\u51fa\u73b0\uff0c\u51fa\u73b0\u5728\u4ee3\u7801\u4e2d\u7684\u7c7b\u662f\u4ed6\u4eec\u7684\u63a5\u53e3HelloHome\u548c Hello\uff0c\u56e0\u6b64\u5ba2\u6237\u7aef\u9700\u8981\u8fd9\u4e24\u4e2a\u63a5\u53e3\u6587\u4ef6\uff0c\u800cStub\u662f\u670d\u52a1\u5668\u4f20\u9001\u7ed9\u4ed6\u4eec\u7684\u3002<\/p>\n

http:\/\/www.pbase.com\/nobo123\/image\/27229257<\/p>\n

http:\/\/forum.javaeye.com\/viewtopic.php?t=3832&postdays=0&postorder=asc&start=0<\/p>\n

94\u3001\u6392\u5e8f\u90fd\u6709\u54ea\u51e0\u79cd\u65b9\u6cd5\uff1f\u8bf7\u5217\u4e3e\u3002\u7528JAVA\u5b9e\u73b0\u4e00\u4e2a\u5feb\u901f\u6392\u5e8f\u3002
\n\u6392\u5e8f\u7684\u65b9\u6cd5\u6709\uff1a\u63d2\u5165\u6392\u5e8f\uff08\u76f4\u63a5\u63d2\u5165\u6392\u5e8f\u3001\u5e0c\u5c14\u6392\u5e8f\uff09\uff0c\u4ea4\u6362\u6392\u5e8f\uff08\u5192\u6ce1\u6392\u5e8f\u3001\u5feb\u901f\u6392\u5e8f\uff09\uff0c\u9009\u62e9\u6392\u5e8f\uff08\u76f4\u63a5\u9009\u62e9\u6392\u5e8f\u3001\u5806\u6392\u5e8f\uff09\uff0c\u5f52\u5e76\u6392\u5e8f\uff0c\u5206\u914d\u6392\u5e8f\uff08\u7bb1\u6392\u5e8f\u3001\u57fa\u6570\u6392\u5e8f\uff09
\n\u5feb\u901f\u6392\u5e8f\u7684\u4f2a\u4ee3\u7801\u3002
\n\/ \/\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u65b9\u6cd5\u5bf9a[ 0 :n- 1 ]\u6392\u5e8f
\n\u4ecea[ 0 :n- 1 ]\u4e2d\u9009\u62e9\u4e00\u4e2a\u5143\u7d20\u4f5c\u4e3am i d d l e\uff0c\u8be5\u5143\u7d20\u4e3a\u652f\u70b9
\n\u628a\u4f59\u4e0b\u7684\u5143\u7d20\u5206\u5272\u4e3a\u4e24\u6bb5left \u548cr i g h t\uff0c\u4f7f\u5f97l e f t\u4e2d\u7684\u5143\u7d20\u90fd\u5c0f\u4e8e\u7b49\u4e8e\u652f\u70b9\uff0c\u800cright \u4e2d\u7684\u5143\u7d20\u90fd\u5927\u4e8e\u7b49\u4e8e\u652f\u70b9
\n\u9012\u5f52\u5730\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u65b9\u6cd5\u5bf9left \u8fdb\u884c\u6392\u5e8f
\n\u9012\u5f52\u5730\u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u65b9\u6cd5\u5bf9right \u8fdb\u884c\u6392\u5e8f
\n\u6240\u5f97\u7ed3\u679c\u4e3al e f t + m i d d l e + r i g h t<\/p>\n

95\u3001\u8bf7\u5bf9\u4ee5\u4e0b\u5728J2EE\u4e2d\u5e38\u7528\u7684\u540d\u8bcd\u8fdb\u884c\u89e3\u91ca(\u6216\u7b80\u5355\u63cf\u8ff0)
\nweb \u5bb9\u5668\uff1a\u7ed9\u5904\u4e8e\u5176\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u7ec4\u4ef6\uff08JSP\uff0cSERVLET\uff09\u63d0\u4f9b\u4e00\u4e2a\u73af\u5883\uff0c\u4f7fJSP,SERVLET\u76f4\u63a5\u548c\u5bb9\u5668\u4e2d\u7684\u73af\u5883\u53d8\u91cf\u63a5\u63a5\u53e3\u4e92\uff0c\u4e0d\u5fc5\u5173\u6ce8\u5176\u5b83\u7cfb\u7edf\u95ee \u9898\u3002\u4e3b\u8981\u6709WEB\u670d\u52a1\u5668\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff1aTOMCAT,WEBLOGIC,WEBSPHERE\u7b49\u3002\u8be5\u5bb9\u5668\u63d0\u4f9b\u7684\u63a5\u53e3\u4e25\u683c\u9075\u5b88J2EE\u89c4\u8303\u4e2d\u7684WEB APPLICATION \u6807\u51c6\u3002\u6211\u4eec\u628a\u9075\u5b88\u4ee5\u4e0a\u6807\u51c6\u7684WEB\u670d\u52a1\u5668\u5c31\u53eb\u505aJ2EE\u4e2d\u7684WEB\u5bb9\u5668\u3002
\nWeb container\uff1a\u5b9e\u73b0J2EE\u4f53\u7cfb\u7ed3\u6784\u4e2dWeb\u7ec4\u4ef6\u534f\u8bae\u7684\u5bb9\u5668\u3002\u8fd9\u4e2a\u534f\u8bae\u89c4\u5b9a\u4e86\u4e00\u4e2aWeb\u7ec4\u4ef6\u8fd0\u884c\u65f6\u7684\u73af\u5883\uff0c\u5305\u62ec\u5b89\u5168\uff0c\u4e00\u81f4\u6027\uff0c\u751f\u547d\u5468\u671f\u7ba1\u7406\uff0c\u4e8b\u52a1\uff0c \u914d\u7f6e\u548c\u5176\u5b83\u7684\u670d\u52a1\u3002\u4e00\u4e2a\u63d0\u4f9b\u548cJSP\u548cJ2EE\u5e73\u53f0APIs\u754c\u9762\u76f8\u540c\u670d\u52a1\u7684\u5bb9\u5668\u3002\u4e00\u4e2aWeb container \u7531Web\u670d\u52a1\u5668\u6216\u8005J2EE\u670d\u52a1\u5668\u63d0\u4f9b\u3002
\nEJB\u5bb9\u5668\uff1aEnterprise java bean \u5bb9\u5668\u3002\u66f4\u5177\u6709\u884c\u4e1a\u9886\u57df\u7279\u8272\u3002\u4ed6\u63d0\u4f9b\u7ed9\u8fd0\u884c\u5728\u5176\u4e2d\u7684\u7ec4\u4ef6EJB\u5404\u79cd\u7ba1\u7406\u529f\u80fd\u3002\u53ea\u8981\u6ee1\u8db3J2EE\u89c4\u8303\u7684EJB\u653e\u5165\u8be5\u5bb9\u5668\uff0c\u9a6c\u4e0a\u5c31\u4f1a\u88ab\u5bb9\u5668\u8fdb\u884c\u9ad8\u6548\u7387\u7684\u7ba1\u7406\u3002\u5e76 \u4e14\u53ef\u4ee5\u901a\u8fc7\u73b0\u6210\u7684\u63a5\u53e3\u6765\u83b7\u5f97\u7cfb\u7edf\u7ea7\u522b\u7684\u670d\u52a1\u3002\u4f8b\u5982\u90ae\u4ef6\u670d\u52a1\u3001\u4e8b\u52a1\u7ba1\u7406\u3002
\n\u4e00\u4e2a\u5b9e\u73b0\u4e86J2EE\u4f53\u7cfb\u7ed3\u6784\u4e2dEJB\u7ec4\u4ef6\u89c4\u8303\u7684\u5bb9\u5668\u3002
\n\u8fd9\u4e2a\u89c4\u8303\u6307\u5b9a\u4e86\u4e00\u4e2aEnterprise bean\u7684\u8fd0\u884c\u65f6\u73af\u5883\uff0c\u5305\u62ec\u5b89\u5168\uff0c\u4e00\u81f4\u6027\uff0c\u751f\u547d\u5468\u671f\uff0c\u4e8b\u52a1\uff0c
\n\u914d\u7f6e\uff0c\u548c\u5176\u4ed6\u7684\u670d\u52a1\u3002
\nJNDI\uff1a\uff08Java Naming & Directory Interface\uff09JAVA\u547d\u540d\u76ee\u5f55\u670d\u52a1\u3002\u4e3b\u8981\u63d0\u4f9b\u7684\u529f\u80fd\u662f\uff1a\u63d0\u4f9b\u4e00\u4e2a\u76ee\u5f55\u7cfb\u7edf\uff0c\u8ba9\u5176\u5b83\u5404\u5730\u7684\u5e94\u7528\u7a0b\u5e8f\u5728\u5176\u4e0a\u9762\u7559\u4e0b\u81ea\u5df1\u7684\u7d22\u5f15\uff0c\u4ece\u800c\u6ee1\u8db3\u5feb\u901f\u67e5\u627e\u548c\u5b9a\u4f4d\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u7684\u529f\u80fd\u3002
\nJMS\uff1a\uff08Java Message Service\uff09JAVA\u6d88\u606f\u670d\u52a1\u3002\u4e3b\u8981\u5b9e\u73b0\u5404\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\u901a\u8baf\u3002\u5305\u62ec\u70b9\u5bf9\u70b9\u548c\u5e7f\u64ad\u3002
\nJTA\uff1a\uff08Java Transaction API\uff09JAVA\u4e8b\u52a1\u670d\u52a1\u3002\u63d0\u4f9b\u5404\u79cd\u5206\u5e03\u5f0f\u4e8b\u52a1\u670d\u52a1\u3002\u5e94\u7528\u7a0b\u5e8f\u53ea\u9700\u8c03\u7528\u5176\u63d0\u4f9b\u7684\u63a5\u53e3\u5373\u53ef\u3002
\nJAF\uff1a\uff08Java Action FrameWork\uff09JAVA\u5b89\u5168\u8ba4\u8bc1\u6846\u67b6\u3002\u63d0\u4f9b\u4e00\u4e9b\u5b89\u5168\u63a7\u5236\u65b9\u9762\u7684\u6846\u67b6\u3002\u8ba9\u5f00\u53d1\u8005\u901a\u8fc7\u5404\u79cd\u90e8\u7f72\u548c\u81ea\u5b9a\u4e49\u5b9e\u73b0\u81ea\u5df1\u7684\u4e2a\u6027\u5b89\u5168\u63a7\u5236\u7b56\u7565\u3002
\nRMI\/IIOP: \uff08Remote Method Invocation \/internet\u5bf9\u8c61\u8bf7\u6c42\u4e2d\u4ecb\u534f\u8bae\uff09\u4ed6\u4eec\u4e3b\u8981\u7528\u4e8e\u901a\u8fc7\u8fdc\u7a0b\u8c03\u7528\u670d\u52a1\u3002\u4f8b\u5982\uff0c\u8fdc\u7a0b\u6709\u4e00\u53f0\u8ba1\u7b97\u673a\u4e0a\u8fd0\u884c\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u5b83\u63d0\u4f9b\u80a1\u7968\u5206\u6790\u670d\u52a1\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u672c\u5730\u8ba1\u7b97\u673a \u4e0a\u5b9e\u73b0\u5bf9\u5176\u76f4\u63a5\u8c03\u7528\u3002\u5f53\u7136\u8fd9\u662f\u8981\u901a\u8fc7\u4e00\u5b9a\u7684\u89c4\u8303\u624d\u80fd\u5728\u5f02\u6784\u7684\u7cfb\u7edf\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u3002RMI\u662fJAVA\u7279\u6709\u7684\u3002
\nRMI-IIOP\u51fa\u73b0\u4ee5\u524d\uff0c\u53ea\u6709RMI\u548c CORBA\u4e24\u79cd\u9009\u62e9\u6765\u8fdb\u884c\u5206\u5e03\u5f0f\u7a0b\u5e8f\u8bbe\u8ba1\u3002RMI-IIOP\u7efc\u5408\u4e86RMI\u548cCORBA\u7684\u4f18\u70b9\uff0c\u514b\u670d\u4e86\u4ed6\u4eec\u7684\u7f3a\u70b9\uff0c\u4f7f\u5f97\u7a0b\u5e8f\u5458\u80fd\u66f4\u65b9\u4fbf\u7684\u7f16\u5199\u5206\u5e03\u5f0f\u7a0b\u5e8f\u8bbe \u8ba1\uff0c\u5b9e\u73b0\u5206\u5e03\u5f0f\u8ba1\u7b97\u3002\u9996\u5148\uff0cRMI-IIOP\u7efc\u5408\u4e86RMI\u7684\u7b80\u5355\u6027\u548cCORBA\u7684\u591a\u8bed\u8a00\u6027\uff08\u517c\u5bb9\u6027\uff09\uff0c\u5176\u6b21RMI-IIOP\u514b\u670d\u4e86RMI\u53ea\u80fd\u7528\u4e8eJava \u7684\u7f3a\u70b9\u548cCORBA\u7684\u590d\u6742\u6027\uff08\u53ef\u4ee5\u4e0d\u7528\u638c\u63e1IDL\uff09\u3002<\/p>\n

96\u3001JAVA\u8bed\u8a00\u5982\u4f55\u8fdb\u884c\u5f02\u5e38\u5904\u7406\uff0c\u5173\u952e\u5b57\uff1athrows,throw,try,catch,finally\u5206\u522b\u4ee3\u8868\u4ec0\u4e48\u610f\u4e49\uff1f\u5728try\u5757\u4e2d\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\u5417\uff1f<\/p>\n

Java \u901a\u8fc7\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u6cd5\u8fdb\u884c\u5f02\u5e38\u5904\u7406\uff0c\u628a\u5404\u79cd\u4e0d\u540c\u7684\u5f02\u5e38\u8fdb\u884c\u5206\u7c7b\uff0c\u5e76\u63d0\u4f9b\u4e86\u826f\u597d\u7684\u63a5\u53e3\u3002\u5728Java\u4e2d\uff0c\u6bcf\u4e2a\u5f02\u5e38\u90fd\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5b83\u662fThrowable\u7c7b\u6216\u5176\u5b83 \u5b50\u7c7b\u7684\u5b9e\u4f8b\u3002\u5f53\u4e00\u4e2a\u65b9\u6cd5\u51fa\u73b0\u5f02\u5e38\u540e\u4fbf\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u4e2d\u5305\u542b\u6709\u5f02\u5e38\u4fe1\u606f\uff0c\u8c03\u7528\u8fd9\u4e2a\u5bf9\u8c61\u7684\u65b9\u6cd5\u53ef\u4ee5\u6355\u83b7\u5230\u8fd9\u4e2a\u5f02\u5e38\u5e76\u8fdb\u884c\u5904\u7406\u3002Java\u7684\u5f02\u5e38\u5904\u7406\u662f \u901a\u8fc75\u4e2a\u5173\u952e\u8bcd\u6765\u5b9e\u73b0\u7684\uff1atry\u3001catch\u3001throw\u3001throws\u548cfinally\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u7528try\u6765\u6267\u884c\u4e00\u6bb5\u7a0b\u5e8f\uff0c\u5982\u679c\u51fa\u73b0\u5f02\u5e38\uff0c\u7cfb\u7edf\u4f1a\u629b \u51fa\uff08throws\uff09\u4e00\u4e2a\u5f02\u5e38\uff0c\u8fd9\u65f6\u5019\u4f60\u53ef\u4ee5\u901a\u8fc7\u5b83\u7684\u7c7b\u578b\u6765\u6355\u6349\uff08catch\uff09\u5b83\uff0c\u6216\u6700\u540e\uff08finally\uff09\u7531\u7f3a\u7701\u5904\u7406\u5668\u6765\u5904\u7406\u3002
\n\u7528try\u6765\u6307\u5b9a\u4e00\u5757\u9884\u9632\u6240\u6709"\u5f02\u5e38"\u7684\u7a0b\u5e8f\u3002\u7d27\u8ddf\u5728try\u7a0b\u5e8f\u540e\u9762\uff0c\u5e94\u5305\u542b\u4e00\u4e2acatch\u5b50\u53e5\u6765\u6307\u5b9a\u4f60\u60f3\u8981\u6355\u6349\u7684"\u5f02\u5e38"\u7684\u7c7b\u578b\u3002
\nthrow\u8bed\u53e5\u7528\u6765\u660e\u786e\u5730\u629b\u51fa\u4e00\u4e2a"\u5f02\u5e38"\u3002
\nthrows\u7528\u6765\u6807\u660e\u4e00\u4e2a\u6210\u5458\u51fd\u6570\u53ef\u80fd\u629b\u51fa\u7684\u5404\u79cd"\u5f02\u5e38"\u3002
\nFinally\u4e3a\u786e\u4fdd\u4e00\u6bb5\u4ee3\u7801\u4e0d\u7ba1\u53d1\u751f\u4ec0\u4e48"\u5f02\u5e38"\u90fd\u88ab\u6267\u884c\u4e00\u6bb5\u4ee3\u7801\u3002
\n\u53ef \u4ee5\u5728\u4e00\u4e2a\u6210\u5458\u51fd\u6570\u8c03\u7528\u7684\u5916\u9762\u5199\u4e00\u4e2atry\u8bed\u53e5\uff0c\u5728\u8fd9\u4e2a\u6210\u5458\u51fd\u6570\u5185\u90e8\u5199\u53e6\u4e00\u4e2atry\u8bed\u53e5\u4fdd\u62a4\u5176\u4ed6\u4ee3\u7801\u3002\u6bcf\u5f53\u9047\u5230\u4e00\u4e2atry\u8bed\u53e5\uff0c"\u5f02\u5e38"\u7684\u6846\u67b6\u5c31\u653e\u5230\u5806\u6808\u4e0a \u9762\uff0c\u76f4\u5230\u6240\u6709\u7684try\u8bed\u53e5\u90fd\u5b8c\u6210\u3002\u5982\u679c\u4e0b\u4e00\u7ea7\u7684try\u8bed\u53e5\u6ca1\u6709\u5bf9\u67d0\u79cd"\u5f02\u5e38"\u8fdb\u884c\u5904\u7406\uff0c\u5806\u6808\u5c31\u4f1a\u5c55\u5f00\uff0c\u76f4\u5230\u9047\u5230\u6709\u5904\u7406\u8fd9\u79cd"\u5f02\u5e38"\u7684try\u8bed\u53e5\u3002<\/p>\n

http:\/\/www.programfan.com\/article\/showarticle.asp?id=2731<\/p>\n

97\u3001\u4e00\u4e2a".java"\u6e90\u6587\u4ef6\u4e2d\u662f\u5426\u53ef\u4ee5\u5305\u62ec\u591a\u4e2a\u7c7b\uff08\u4e0d\u662f\u5185\u90e8\u7c7b\uff09\uff1f\u6709\u4ec0\u4e48\u9650\u5236\uff1f
\n\u53ef\u4ee5\u3002\u5fc5\u987b\u53ea\u6709\u4e00\u4e2a\u7c7b\u540d\u4e0e\u6587\u4ef6\u540d\u76f8\u540c\u3002<\/p>\n

98\u3001MVC\u7684\u5404\u4e2a\u90e8\u5206\u90fd\u6709\u90a3\u4e9b\u6280\u672f\u6765\u5b9e\u73b0?\u5982\u4f55\u5b9e\u73b0?
\nMVC \u662fModel\uff0dView\uff0dController\u7684\u7b80\u5199\u3002"Model" \u4ee3\u8868\u7684\u662f\u5e94\u7528\u7684\u4e1a\u52a1\u903b\u8f91\uff08\u901a\u8fc7JavaBean\uff0cEJB\u7ec4\u4ef6\u5b9e\u73b0\uff09\uff0c "View" \u662f\u5e94\u7528\u7684\u8868\u793a\u9762\uff0c\u7528\u4e8e\u4e0e\u7528\u6237\u7684\u4ea4\u4e92\uff08\u7531JSP\u9875\u9762\u4ea7\u751f\uff09\uff0c"Controller" \u662f\u63d0\u4f9b\u5e94\u7528\u7684\u5904\u7406\u8fc7\u7a0b\u63a7\u5236\uff08\u4e00\u822c\u662f\u4e00\u4e2aServlet\uff09\uff0c\u901a\u8fc7\u8fd9\u79cd\u8bbe\u8ba1\u6a21\u578b\u628a\u5e94\u7528\u903b\u8f91\uff0c\u5904\u7406\u8fc7\u7a0b\u548c\u663e\u793a\u903b\u8f91\u5206\u6210\u4e0d\u540c\u7684\u7ec4\u4ef6\u5b9e\u73b0\u3002\u8fd9\u4e9b\u7ec4\u4ef6\u53ef\u4ee5\u8fdb\u884c\u4ea4\u4e92\u548c\u91cd \u7528\u3002
\nmodel\u5c42\u5b9e\u73b0\u7cfb\u7edf\u4e2d\u7684\u4e1a\u52a1\u903b\u8f91\uff0cview\u5c42\u7528\u4e8e\u4e0e\u7528\u6237\u7684\u4ea4\u4e92\uff0ccontroller\u5c42\u662fmodel\u4e0eview\u4e4b\u95f4\u6c9f\u901a\u7684\u6865\u6881\uff0c\u53ef\u4ee5\u5206\u6d3e\u7528\u6237\u7684\u8bf7\u6c42\u5e76\u9009\u62e9\u6070\u5f53\u7684\u89c6\u56fe\u4ee5\u7528\u4e8e\u663e\u793a\uff0c\u540c\u65f6\u5b83\u4e5f\u53ef\u4ee5\u89e3\u91ca\u7528\u6237\u7684\u8f93\u5165\u5e76\u5c06\u5b83\u4eec\u6620\u5c04\u4e3a\u6a21\u578b\u5c42\u53ef\u6267\u884c\u7684\u64cd\u4f5c\u3002<\/p>\n

99\u3001java\u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e2a\u7ebf\u7a0b\uff1f\u7528\u4ec0\u4e48\u5173\u952e\u5b57\u4fee\u9970\u540c\u6b65\u65b9\u6cd5? stop()\u548csuspend()\u65b9\u6cd5\u4e3a\u4f55\u4e0d\u63a8\u8350\u4f7f\u7528\uff1f
\n\u6709\u4e24\u79cd\u5b9e\u73b0\u65b9\u6cd5\uff0c\u5206\u522b\u662f\u7ee7\u627fThread\u7c7b\u4e0e\u5b9e\u73b0Runnable\u63a5\u53e3
\n\u7528synchronized\u5173\u952e\u5b57\u4fee\u9970\u540c\u6b65\u65b9\u6cd5
\n\u53cd \u5bf9\u4f7f\u7528stop()\uff0c\u662f\u56e0\u4e3a\u5b83\u4e0d\u5b89\u5168\u3002\u5b83\u4f1a\u89e3\u9664\u7531\u7ebf\u7a0b\u83b7\u53d6\u7684\u6240\u6709\u9501\u5b9a\uff0c\u800c\u4e14\u5982\u679c\u5bf9\u8c61\u5904\u4e8e\u4e00\u79cd\u4e0d\u8fde\u8d2f\u72b6\u6001\uff0c\u90a3\u4e48\u5176\u4ed6\u7ebf\u7a0b\u80fd\u5728\u90a3\u79cd\u72b6\u6001\u4e0b\u68c0\u67e5\u548c\u4fee\u6539\u5b83\u4eec\u3002\u7ed3\u679c \u5f88\u96be\u68c0\u67e5\u51fa\u771f\u6b63\u7684\u95ee\u9898\u6240\u5728\u3002suspend()\u65b9\u6cd5\u5bb9\u6613\u53d1\u751f\u6b7b\u9501\u3002\u8c03\u7528suspend()\u7684\u65f6\u5019\uff0c\u76ee\u6807\u7ebf\u7a0b\u4f1a\u505c\u4e0b\u6765\uff0c\u4f46\u5374\u4ecd\u7136\u6301\u6709\u5728\u8fd9\u4e4b\u524d\u83b7\u5f97\u7684\u9501\u5b9a\u3002\u6b64 \u65f6\uff0c\u5176\u4ed6\u4efb\u4f55\u7ebf\u7a0b\u90fd\u4e0d\u80fd\u8bbf\u95ee\u9501\u5b9a\u7684\u8d44\u6e90\uff0c\u9664\u975e\u88ab"\u6302\u8d77"\u7684\u7ebf\u7a0b\u6062\u590d\u8fd0\u884c\u3002\u5bf9\u4efb\u4f55\u7ebf\u7a0b\u6765\u8bf4\uff0c\u5982\u679c\u5b83\u4eec\u60f3\u6062\u590d\u76ee\u6807\u7ebf\u7a0b\uff0c\u540c\u65f6\u53c8\u8bd5\u56fe\u4f7f\u7528\u4efb\u4f55\u4e00\u4e2a\u9501\u5b9a\u7684\u8d44\u6e90\uff0c\u5c31 \u4f1a\u9020\u6210\u6b7b\u9501\u3002\u6240\u4ee5\u4e0d\u5e94\u8be5\u4f7f\u7528suspend()\uff0c\u800c\u5e94\u5728\u81ea\u5df1\u7684Thread\u7c7b\u4e2d\u7f6e\u5165\u4e00\u4e2a\u6807\u5fd7\uff0c\u6307\u51fa\u7ebf\u7a0b\u5e94\u8be5\u6d3b\u52a8\u8fd8\u662f\u6302\u8d77\u3002\u82e5\u6807\u5fd7\u6307\u51fa\u7ebf\u7a0b\u5e94\u8be5\u6302\u8d77\uff0c\u4fbf\u7528 wait()\u547d\u5176\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u3002\u82e5\u6807\u5fd7\u6307\u51fa\u7ebf\u7a0b\u5e94\u5f53\u6062\u590d\uff0c\u5219\u7528\u4e00\u4e2anotify()\u91cd\u65b0\u542f\u52a8\u7ebf\u7a0b\u3002<\/p>\n

100\u3001java\u4e2d\u6709\u51e0\u79cd\u7c7b\u578b\u7684\u6d41\uff1fJDK\u4e3a\u6bcf\u79cd\u7c7b\u578b\u7684\u6d41\u63d0\u4f9b\u4e86\u4e00\u4e9b\u62bd\u8c61\u7c7b\u4ee5\u4f9b\u7ee7\u627f\uff0c\u8bf7\u8bf4\u51fa\u4ed6\u4eec\u5206\u522b\u662f\u54ea\u4e9b\u7c7b\uff1f
\n\u5b57\u8282\u6d41\uff0c\u5b57\u7b26\u6d41\u3002\u5b57\u8282\u6d41\u7ee7\u627f\u4e8eInputStream OutputStream\uff0c\u5b57\u7b26\u6d41\u7ee7\u627f\u4e8eInputStreamReader OutputStreamWriter\u3002\u5728java.io\u5305\u4e2d\u8fd8\u6709\u8bb8\u591a\u5176\u4ed6\u7684\u6d41\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd\u548c\u4f7f\u7528\u65b9\u4fbf\u3002<\/p>\n

101\u3001java\u4e2d\u4f1a\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u5417\uff0c\u8bf7\u7b80\u5355\u63cf\u8ff0\u3002
\n\u7684\u786e\u5b58\u5728Java\u7684\u5185\u5b58\u6cc4\u6f0f, \u5e76\u4e14\u4e8b\u6001\u53ef\u4ee5\u53d8\u5f97\u76f8\u5f53\u4e25\u91cd<\/p>\n

Java garbage collector\u81ea\u52a8\u91ca\u653e\u54ea\u4e9b\u5185\u5b58\u91cc\u9762\u7a0b\u5e8f\u4e0d\u5728\u9700\u8981\u7684\u5bf9\u8c61, \u4ee5\u6b64\u907f\u514d\u5927\u591a\u6570\u7684\u5176\u4ed6\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u7684\u5185\u5b58\u6cc4\u6f0f. \u4f46\u662fJava\u5e94\u7528\u7a0b\u5e8f\u4f9d\u65e7\u4f1a\u6709\u76f8\u5f53\u7684\u5185\u5b58\u6cc4\u6f0f. \u67e5\u627e\u539f\u56e0\u4f1a\u5341\u5206\u56f0\u96be.
\n\u6709\u4e24\u7c7b\u4e3b\u8981\u7684Java\u5185\u5b58\u6cc4\u6f0f:
\n* \u4e0d\u518d\u9700\u8981\u7684\u5bf9\u8c61\u5f15\u7528
\n* \u672a\u91ca\u653e\u7684\u7cfb\u7edf\u8d44\u6e90
\n2.2 \u975e\u5fc5\u8981\u7684\u5bf9\u8c61\u5f15\u7528
\nJava\u4ee3\u7801\u5e38\u5e38\u4fdd\u7559\u5bf9\u4e8e\u4e0d\u518d\u9700\u8981\u7684\u5bf9\u8c61\u5f15\u7528, \u5e76\u4e14\u8fd9\u7ec4\u7ec7\u4e86\u5185\u5b58\u7684\u5783\u573e\u6536\u96c6\u5668\u7684\u5de5\u4f5c. Java\u5bf9\u8c61\u901a\u5e38\u88ab\u5176\u4ed6\u5bf9\u8c61\u5305\u542b\u5f15\u7528, \u4e3a\u6b64\u4e00\u4e2a\u5355\u4e00\u5bf9\u8c61\u53ef\u4ee5\u4fdd\u6301\u6574\u4e2a\u5bf9\u8c61\u6811\u5728\u5185\u5b58\u4e2d, \u4e8e\u662f\u5bfc\u81f4\u4e86\u5982\u4e0b\u95ee\u9898:
\n* \u5728\u5411\u6570\u7ec4\u6dfb\u52a0\u5bf9\u8c61\u4ee5\u540e\u9057\u6f0f\u4e86\u5bf9\u4e8e\u4ed6\u4eec\u7684\u5904\u7406
\n* \u76f4\u5230\u4f60\u518d\u6b21\u4f7f\u7528\u5bf9\u8c61\u7684\u65f6\u5019\u90fd\u4e0d\u91ca\u653e\u5f15\u7528. \u6bd4\u5982\u4e00\u4e2a\u83dc\u5355\u6307\u4ee4\u53ef\u4ee5\u63d2\u4ef6\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u5f15\u7528\u5e76\u4e14\u4e0d\u91ca\u653e\u4fbf\u4e8e\u4ee5\u540e\u518d\u6b21\u8c03\u7528\u7684\u65f6\u5019\u4f7f\u7528, \u4f46\u662f\u4e5f\u8bb8\u6c38\u8fdc\u4e0d\u4f1a\u53d1\u751f.
\n* \u5728\u5176\u4ed6\u5f15\u7528\u4f9d\u7136\u9700\u8981\u65e7\u6709\u72b6\u6001\u7684\u65f6\u5019\u8d38\u7136\u4fee\u6539\u5bf9\u8c61\u72b6\u6001. \u6bd4\u5982\u5f53\u4f60\u4e3a\u4e86\u5728\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u91cc\u9762\u4fdd\u5b58\u4e00\u4e9b\u5c5e\u6027\u800c\u4f7f\u7528\u4e00\u4e2a\u6570\u7ec4, \u8bf8\u5982"\u5b57\u7b26\u4e2a\u6570"\u7b49\u5b57\u6bb5\u5728\u4e0d\u518d\u9700\u8981\u7684\u65f6\u5019\u4f9d\u7136\u4fdd\u7559\u5728\u5185\u5b58\u5f53\u4e2d.
\n* \u5141\u8bb8\u4e00\u4e2a\u957f\u4e45\u6267\u884c\u7684\u7ebf\u7a0b\u6240\u5f15\u7528\u7684\u5bf9\u8c61. \u8bbe\u7f6e\u5f15\u7528\u4e3aNULL\u4e5f\u65e0\u6d4e\u4e8e\u4e8b, \u5728\u7ebf\u7a0b\u9000\u51fa\u548c\u7a7a\u95f2\u4e4b\u524d, \u5bf9\u8c61\u4e0d\u4f1a\u88ab\u6536\u96c6\u91ca\u653e
\n2.3 \u672a\u91ca\u653e\u7684\u7cfb\u7edf\u8d44\u6e90
\nJava\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4f4dJava\u5b9e\u4f8b\u610f\u5916\u7684\u5806\u5185\u5b58, \u8bf8\u5982\u9488\u5bf9\u89c6\u7a97\u548c\u4f4d\u56fe\u7684\u5185\u5b58\u8d44\u6e90. Java\u5e38\u5e38\u901a\u8fc7JNI(Java Native Interface)\u8c03\u7528C\/C++\u5b50\u7a0b\u5e8f\u5b9a\u4f4d\u8fd9\u4e9b\u8d44\u6e90.<\/p>\n

102\u3001java\u4e2d\u5b9e\u73b0\u591a\u6001\u7684\u673a\u5236\u662f\u4ec0\u4e48\uff1f
\n\u65b9\u6cd5\u7684\u91cd\u5199Overriding\u548c\u91cd\u8f7dOverloading\u662fJava\u591a\u6001\u6027\u7684\u4e0d\u540c\u8868\u73b0\u3002\u91cd\u5199Overriding\u662f\u7236\u7c7b\u4e0e\u5b50\u7c7b\u4e4b\u95f4\u591a\u6001\u6027\u7684\u4e00\u79cd\u8868\u73b0\uff0c\u91cd\u8f7dOverloading\u662f\u4e00\u4e2a\u7c7b\u4e2d\u591a\u6001\u6027\u7684\u4e00\u79cd\u8868\u73b0\u3002<\/p>\n

103\u3001\u5783\u573e\u56de\u6536\u5668\u7684\u57fa\u672c\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u9a6c\u4e0a\u56de\u6536\u5185\u5b58\u5417\uff1f\u6709\u4ec0\u4e48\u529e\u6cd5\u4e3b\u52a8\u901a\u77e5\u865a\u62df\u673a\u8fdb\u884c\u5783\u573e\u56de\u6536\uff1f
\n\u5bf9 \u4e8eGC\u6765\u8bf4\uff0c\u5f53\u7a0b\u5e8f\u5458\u521b\u5efa\u5bf9\u8c61\u65f6\uff0cGC\u5c31\u5f00\u59cb\u76d1\u63a7\u8fd9\u4e2a\u5bf9\u8c61\u7684\u5730\u5740\u3001\u5927\u5c0f\u4ee5\u53ca\u4f7f\u7528\u60c5\u51b5\u3002\u901a\u5e38\uff0cGC\u91c7\u7528\u6709\u5411\u56fe\u7684\u65b9\u5f0f\u8bb0\u5f55\u548c\u7ba1\u7406\u5806(heap)\u4e2d\u7684\u6240\u6709\u5bf9\u8c61\u3002 \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u786e\u5b9a\u54ea\u4e9b\u5bf9\u8c61\u662f"\u53ef\u8fbe\u7684"\uff0c\u54ea\u4e9b\u5bf9\u8c61\u662f"\u4e0d\u53ef\u8fbe\u7684"\u3002\u5f53GC\u786e\u5b9a\u4e00\u4e9b\u5bf9\u8c61\u4e3a"\u4e0d\u53ef\u8fbe"\u65f6\uff0cGC\u5c31\u6709\u8d23\u4efb\u56de\u6536\u8fd9\u4e9b\u5185\u5b58\u7a7a\u95f4\u3002\u53ef\u4ee5\u3002\u7a0b\u5e8f\u5458\u53ef\u4ee5\u624b \u52a8\u6267\u884cSystem.gc()\uff0c\u901a\u77e5GC\u8fd0\u884c\uff0c\u4f46\u662fJava\u8bed\u8a00\u89c4\u8303\u5e76\u4e0d\u4fdd\u8bc1GC\u4e00\u5b9a\u4f1a\u6267\u884c\u3002<\/p>\n

104\u3001\u9759\u6001\u53d8\u91cf\u548c\u5b9e\u4f8b\u53d8\u91cf\u7684\u533a\u522b\uff1f
\nstatic i = 10; \/\/\u5e38\u91cf
\nclass A a; a.i =10;\/\/\u53ef\u53d8<\/p>\n

105\u3001\u4ec0\u4e48\u662fjava\u5e8f\u5217\u5316\uff0c\u5982\u4f55\u5b9e\u73b0java\u5e8f\u5217\u5316\uff1f
\n\u5e8f\u5217\u5316\u5c31\u662f\u4e00\u79cd\u7528\u6765\u5904\u7406\u5bf9\u8c61\u6d41\u7684\u673a\u5236\uff0c\u6240\u8c13\u5bf9\u8c61\u6d41\u4e5f\u5c31\u662f\u5c06\u5bf9\u8c61\u7684\u5185\u5bb9\u8fdb\u884c\u6d41\u5316\u3002\u53ef\u4ee5\u5bf9\u6d41\u5316\u540e\u7684\u5bf9\u8c61\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff0c\u4e5f\u53ef\u5c06\u6d41\u5316\u540e\u7684\u5bf9\u8c61\u4f20\u8f93\u4e8e\u7f51\u7edc\u4e4b\u95f4\u3002\u5e8f\u5217\u5316\u662f\u4e3a\u4e86\u89e3\u51b3\u5728\u5bf9\u5bf9\u8c61\u6d41\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u65f6\u6240\u5f15\u53d1\u7684\u95ee\u9898\u3002
\n\u5e8f \u5217\u5316\u7684\u5b9e\u73b0\uff1a\u5c06\u9700\u8981\u88ab\u5e8f\u5217\u5316\u7684\u7c7b\u5b9e\u73b0Serializable\u63a5\u53e3\uff0c\u8be5\u63a5\u53e3\u6ca1\u6709\u9700\u8981\u5b9e\u73b0\u7684\u65b9\u6cd5\uff0cimplements Serializable\u53ea\u662f\u4e3a\u4e86\u6807\u6ce8\u8be5\u5bf9\u8c61\u662f\u53ef\u88ab\u5e8f\u5217\u5316\u7684\uff0c\u7136\u540e\u4f7f\u7528\u4e00\u4e2a\u8f93\u51fa\u6d41(\u5982\uff1aFileOutputStream)\u6765\u6784\u9020\u4e00\u4e2a ObjectOutputStream(\u5bf9\u8c61\u6d41)\u5bf9\u8c61\uff0c\u63a5\u7740\uff0c\u4f7f\u7528ObjectOutputStream\u5bf9\u8c61\u7684writeObject(Object obj)\u65b9\u6cd5\u5c31\u53ef\u4ee5\u5c06\u53c2\u6570\u4e3aobj\u7684\u5bf9\u8c61\u5199\u51fa(\u5373\u4fdd\u5b58\u5176\u72b6\u6001)\uff0c\u8981\u6062\u590d\u7684\u8bdd\u5219\u7528\u8f93\u5165\u6d41\u3002<\/p>\n

106\u3001\u662f\u5426\u53ef\u4ee5\u4ece\u4e00\u4e2astatic\u65b9\u6cd5\u5185\u90e8\u53d1\u51fa\u5bf9\u975estatic\u65b9\u6cd5\u7684\u8c03\u7528\uff1f
\n\u4e0d\u53ef\u4ee5,\u5982\u679c\u5176\u4e2d\u5305\u542b\u5bf9\u8c61\u7684method()\uff1b\u4e0d\u80fd\u4fdd\u8bc1\u5bf9\u8c61\u521d\u59cb\u5316.<\/p>\n

107\u3001\u5199clone()\u65b9\u6cd5\u65f6\uff0c\u901a\u5e38\u90fd\u6709\u4e00\u884c\u4ee3\u7801\uff0c\u662f\u4ec0\u4e48\uff1f
\nClone \u6709\u7f3a\u7701\u884c\u4e3a\uff0csuper.clone();\u4ed6\u8d1f\u8d23\u4ea7\u751f\u6b63\u786e\u5927\u5c0f\u7684\u7a7a\u95f4\uff0c\u5e76\u9010\u4f4d\u590d\u5236\u3002<\/p>\n

108\u3001\u5728JAVA\u4e2d\uff0c\u5982\u4f55\u8df3\u51fa\u5f53\u524d\u7684\u591a\u91cd\u5d4c\u5957\u5faa\u73af\uff1f
\n\u7528break; return \u65b9\u6cd5\u3002<\/p>\n

109\u3001List\u3001Map\u3001Set\u4e09\u4e2a\u63a5\u53e3\uff0c\u5b58\u53d6\u5143\u7d20\u65f6\uff0c\u5404\u6709\u4ec0\u4e48\u7279\u70b9\uff1f
\nList \u4ee5\u7279\u5b9a\u6b21\u5e8f\u6765\u6301\u6709\u5143\u7d20\uff0c\u53ef\u6709\u91cd\u590d\u5143\u7d20\u3002Set \u65e0\u6cd5\u62e5\u6709\u91cd\u590d\u5143\u7d20,\u5185\u90e8\u6392\u5e8f\u3002Map \u4fdd\u5b58key-value\u503c\uff0cvalue\u53ef\u591a\u503c\u3002<\/p>\n

110\u3001J2EE\u662f\u4ec0\u4e48\uff1f
\nJ2EE \u662fSun\u516c\u53f8\u63d0\u51fa\u7684\u591a\u5c42(multi-diered),\u5206\u5e03\u5f0f(distributed),\u57fa\u4e8e\u7ec4\u4ef6(component-base)\u7684\u4f01\u4e1a\u7ea7\u5e94\u7528\u6a21\u578b (enterpriese application model).\u5728\u8fd9\u6837\u7684\u4e00\u4e2a\u5e94\u7528\u7cfb\u7edf\u4e2d\uff0c\u53ef\u6309\u7167\u529f\u80fd\u5212\u5206\u4e3a\u4e0d\u540c\u7684\u7ec4\u4ef6\uff0c\u8fd9\u4e9b\u7ec4\u4ef6\u53c8\u53ef\u5728\u4e0d\u540c\u8ba1\u7b97\u673a\u4e0a\uff0c\u5e76\u4e14\u5904\u4e8e\u76f8\u5e94\u7684\u5c42\u6b21(tier)\u4e2d\u3002\u6240\u5c5e\u5c42\u6b21\u5305\u62ec\u5ba2\u6237 \u5c42(clietn tier)\u7ec4\u4ef6,web\u5c42\u548c\u7ec4\u4ef6,Business\u5c42\u548c\u7ec4\u4ef6,\u4f01\u4e1a\u4fe1\u606f\u7cfb\u7edf(EIS)\u5c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

java \u7b14\u8bd5\u9898\u5927\u5168 61\u3001servlet\u7684\u751f\u547d\u5468\u671f web\u5bb9\u5668\u52a0\u8f7dservlet\uff0c\u751f\u547d\u5468\u671f\u5f00\u59cb\u3002\u901a\u8fc7\u8c03\u7528servlet\u7684init()\u65b9\u6cd5\u8fdb\u884cservlet\u7684\u521d\u59cb\u5316\u3002\u901a\u8fc7\u8c03\u7528service()\u65b9\u6cd5\u5b9e\u73b0… <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[28],"tags":[],"class_list":["post-1363","post","type-post","status-publish","format-standard","hentry","category-computer"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=\/wp\/v2\/posts\/1363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1363"}],"version-history":[{"count":0,"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=\/wp\/v2\/posts\/1363\/revisions"}],"wp:attachment":[{"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opgogo.com\/blog2\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}