{"id":951,"date":"2010-10-02T00:10:59","date_gmt":"2010-10-02T00:10:59","guid":{"rendered":"http:\/\/enjoyasp.net\/?p=951"},"modified":"2010-10-02T00:10:59","modified_gmt":"2010-10-02T00:10:59","slug":"servlet%ef%bc%8cfilter%ef%bc%8c-listener%ef%bc%8c-interceptor-%e5%8c%ba%e5%88%ab%e4%b8%8e%e8%81%94%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/enjoyasp.net\/index.php\/2010\/10\/02\/servlet%ef%bc%8cfilter%ef%bc%8c-listener%ef%bc%8c-interceptor-%e5%8c%ba%e5%88%ab%e4%b8%8e%e8%81%94%e7%b3%bb\/","title":{"rendered":"servlet\uff0cfilter\uff0c listener\uff0c interceptor \u533a\u522b\u4e0e\u8054\u7cfb"},"content":{"rendered":"<pre lang=\"java\">\r\n\u56db\u79cd\u5171\u540c\u70b9\uff1a\r\n\r\n\u5bf9\u4e00\u7c7burl,\u6216\u6240\u6709url\u8fdb\u884c\u4e1a\u52a1\u5904\u7406\r\n\u5bf9\u5404\u79cdurl\u4e4b\u7c7b\u8fdb\u884c\u5339\u914d\uff0c\u67e5\u627e\uff0c\u6267\u884c\u76f8\u5e94\u64cd\u4f5c\uff0c\u4e0eaction\u76f8\u6bd4\u8f83\u800c\u8a00\uff0caction\u53ea\u80fd\u9488\u5bf9\u67d0\u4e00\u7279\u5b9a\u7684url\u8fdb\u884c\u5339\u914d\uff0c\u8fdb\u884c\u64cd\u4f5c \u5982: <form action = \"update.action\"> action\u5bf9\u5e94\u7684url\u662f\u56fa\u5b9a\u7684\uff0c\u5bf9\u4e8estruts1.x\u53ef\u80fd\u4e00\u4e2aaction\u53ea\u6709\u4e00\u4e2aurl\r\n\u5bf9\u4e8estruts2.0\uff0c\u4e00\u4e2aaction\u53ef\u80fd\u6709\u591a\u4e2aurl,\u770b\u5b83\u5b9e\u73b0\u7684\u65b9\u6cd5\u6570\u91cf\uff0c\u4e0d\u8fc7\u8fd9\u4e9burl\u5728\u63d0\u4ea4\u4e4b\u524d\u90fd\u662f\u5df2\u7ecf\u7684\uff0c\u56fa\u5b9a\u7684\u3002\u800c\u4e0a\u9762\u56db\u79cd\u53ef\u4ee5\u5bf9\u4efb\u610furl\u8fdb\u884c\u64cd\u4f5c\uff0c\u5982<url-pattern>*.action<\/url-pattern>\r\n\r\n\u533a\u522b\uff1a1,servlet \u6d41\u7a0b\u662f\u77ed\u7684\uff0curl\u4f20\u6765\u4e4b\u540e\uff0c\u5c31\u5bf9\u5176\u8fdb\u884c\u5904\u7406\uff0c\u4e4b\u540e\u8fd4\u56de\u6216\u8f6c\u5411\u5230\u67d0\u4e00\u81ea\u5df1\u6307\u5b9a\u7684\u9875\u9762\u3002\u5b83\u4e3b\u8981\u7528\u6765\u5728\r\n     \u4e1a\u52a1\u5904\u7406\u4e4b\u524d\u8fdb\u884c\u63a7\u5236.\r\n  2,filter \u6d41\u7a0b\u662f\u7ebf\u6027\u7684\uff0c url\u4f20\u6765\u4e4b\u540e\uff0c\u68c0\u67e5\u4e4b\u540e\uff0c\u53ef\u4fdd\u6301\u539f\u6765\u7684\u6d41\u7a0b\u7ee7\u7eed\u5411\u4e0b\u6267\u884c\uff0c\u88ab\u4e0b\u4e00\u4e2afilter, servlet\u63a5\u6536\u7b49\uff0c\u800cservlet \u5904\u7406\u4e4b\u540e\uff0c\u4e0d\u4f1a\u7ee7\u7eed\u5411\u4e0b\u4f20\u9012\u3002filter\u529f\u80fd\u53ef\u7528\u6765\u4fdd\u6301\u6d41\u7a0b\u7ee7\u7eed\u6309\u7167\u539f\u6765\u7684\u65b9\u5f0f\u8fdb\u884c\u4e0b\u53bb\uff0c\u6216\u8005\u4e3b\u5bfc\u6d41\u7a0b\uff0c\u800cservlet\u7684\u529f\u80fd\u4e3b\u8981\u7528\u6765\u4e3b\u5bfc\u6d41\u7a0b\u3002\r\n     filter\u53ef\u7528\u6765\u8fdb\u884c\u5b57\u7b26\u7f16\u7801\u7684\u8fc7\u6ee4\uff0c\u68c0\u6d4b\u7528\u6237\u662f\u5426\u767b\u9646\u7684\u8fc7\u6ee4\uff0c\u7981\u6b62\u9875\u9762\u7f13\u5b58\u7b49\r\n 3, servlet,filter\u90fd\u662f\u9488\u5bf9url\u4e4b\u7c7b\u7684\uff0c\u800clistener\u662f\u9488\u5bf9\u5bf9\u8c61\u7684\u64cd\u4f5c\u7684\uff0c\u5982session\u7684\u521b\u5efa\uff0csession.setAttribute\u7684\u53d1\u751f\uff0c\u5728\u8fd9\u6837\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u505a\u4e00\u4e9b\u4e8b\u60c5\u3002\r\n     \u53ef\u7528\u6765\u8fdb\u884c\uff1aSpring\u6574\u5408Struts,\u4e3aStruts\u7684action\u6ce8\u5165\u5c5e\u6027\uff0cweb\u5e94\u7528\u5b9a\u65f6\u4efb\u52a1\u7684\u5b9e\u73b0\uff0c\u5728\u7ebf\u4eba\u6570\u7684\u7edf\u8ba1\u7b49\r\n\r\n4\uff0cinterceptor \u62e6\u622a\u5668\uff0c\u7c7b\u4f3c\u4e8efilter,\u4e0d\u8fc7\u5728struts.xml\u4e2d\u914d\u7f6e\uff0c\u4e0d\u662f\u5728web.xml,\u5e76\u4e14\u4e0d\u662f\u9488\u5bf9URL\u7684\uff0c\u800c\u662f\u9488\u5bf9action,\u5f53\u9875\u9762\u63d0\u4ea4action\u65f6\uff0c\u8fdb\u884c\u8fc7\u6ee4\u64cd\u4f5c\uff0c\u76f8\u5f53\u4e8estruts1.x\u63d0\u4f9b\u7684plug-in\u673a\u5236\uff0c\u53ef\u4ee5\u770b\u4f5c\uff0c\u524d\u8005\u662fstruts1.x\u81ea\u5e26\u7684filter,\u800cinterceptor \u662fstruts2 \u63d0\u4f9b\u7684filter.\r\n    \u4e0efilter\u4e0d\u540c\u70b9\uff1a\uff08\uff11\uff09\u4e0d\u5728web.xml\u4e2d\u914d\u7f6e\uff0c\u800c\u662f\u5728struts.xml\u4e2d\u5b8c\u6210\u914d\u7f6e\uff0c\u4e0eaction\u5728\u4e00\u8d77\r\n                            ( 2  ) \u53ef\u7531action\u81ea\u5df1\u6307\u5b9a\u7528\u54ea\u4e2ainterceptor \u6765\u5728\u63a5\u6536\u4e4b\u524d\u505a\u4e8b\r\n        \r\n\u4e00\uff0cservlet\r\n1\uff0c \u5728web.xml\u4e2d\u914d\u7f6e\r\n  Servlet \r\n <servlet>\r\n<servlet-name>AutoServlet<\/servlet-name>\r\n<servlet-class>\r\n    com.servlet.AutoServlet\r\n<\/servlet-class>\r\n<\/servlet>\r\n<servlet-mapping>\r\n <servlet-name>AutoServlet<\/servlet-name>\r\n <url-pattern>\/AutoServlet<\/url-pattern>\r\n<\/servlet-mapping>\r\n2\uff0c\u5b9a\u4e49AutoServlet,\u7ee7\u627fHttpServlet,\u5b9e\u73b0\u65b9\u6cd5doGet, doPost\r\n3, \u5e94\u7528\uff1a\r\n\uff081\uff09Struts1.x \u5c31\u662f\u4e00\u4e2aServlet, \u5b83\u4f1a\u5728doGet\u65b9\u6cd5\u4e2d\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6struts-config.xml\u8fdb\u884caction\u7684\u5339\u914d\uff0c\u8fdb\u884c   \u4e1a\u52a1\u5904\u7406\r\n\uff082\uff09\u9a8c\u8bc1\u7801\u751f\u6210\uff08\u4e5f\u53ef\u7528action\u6765\u505a\uff09\r\n\r\n\r\n\u4e8c\uff0cfilter\r\n1, web.xml\u914d\u7f6e\r\n<filter>\r\n<filter-name>checkUrl<\/filter-name>\r\n<filter-class>com.lvjian.filter.CheckUrl<\/filter-class>\r\n<init-param>\r\n  <param-name>name<\/param-name>\r\n  <param-value>asong<\/param-value>    \r\n                              \/\/\u521d\u59cb\u5316\u4f20\u53c2\uff0c\u5f97\u5230\u65f6\u5728filter\u7684init\u65b9\u6cd5\u4e2d\u7528filterConfig.getInitParameter( \"name\" )\r\n<\/init-param>\r\n<\/filter>\r\n<filter-mapping>\r\n<filter-name>checkUrl<\/filter-name>\r\n<url-pattern>\/*<\/url-pattern>\r\n<\/filter-mapping>\r\n\r\n2, \u7ee7\u627f javax.servlet.Filter,\u5b9e\u73b0 doFilter(HttpServletRequest request, HttpServletResponse response\r\n                                             FilterChain filterChain) \u7b49\u65b9\u6cd5  \r\n\r\n      HttpServletRequest request = (HttpServletRequest) req;\r\n      HttpServletResponse response = (HttpServletResponse) res;\r\n      \/\/\u83b7\u53d6\u7528\u6237\u8bf7\u6c42\u7684URI\r\n     String request_uri = request.getRequestURI();\r\n    \/\/\u83b7\u53d6web\u5e94\u7528\u7a0b\u5e8f\u7684\u4e0a\u4e0b\u6587\u8def\u5f84\r\n     String contextPath = request.getContextPath();\r\n    \/\/\u53bb\u9664\u4e0a\u4e0b\u6587\u8def\u5f84\uff0c\u5f97\u5230\u5269\u4f59\u90e8\u5206\u7684\u8def\u5f84\r\n     String uri = request_uri.substring(contextPath.length());\r\n    \/\/\u521b\u5efa\u4f1a\u8bddsession\r\n    HttpSession session = request.getSession(true);\r\n\r\n    \/\/\u4fdd\u6301\u539f\u6709\u6d41\u7a0b\u4e0d\u53d8\r\n     filterChain.doFilter( servletRequest , servletResponse );   \r\n\r\n3,\u5e94\u7528\uff1a\uff081\uff09Struts2.0\r\n\r\n            (2) \u8fdb\u884c\u5b57\u7b26\u7f16\u7801\u7684\u8fc7\u6ee4\uff0c\u68c0\u6d4b\u7528\u6237\u662f\u5426\u767b\u9646\u7684\u8fc7\u6ee4\u7b49\r\n\r\n          \uff083\uff09\u7981\u6b62\u9875\u9762\u7f13\u5b58\uff0c\u539f\u7406\u5c31\u662f\u5bf9\u5404\u4e2a\u8bf7\u6c42\u7684url\u4ee4\u5176\u4e3a\u7a7a,\u5728doFilter\u52a0\u5165\uff1a\r\n\r\n                   request.setCharacterEncoding(\"GB2312\");\/\/\u8bbe\u7f6e\u7f16\u7801 \r\n                   ((HttpServletResponse)response).setHeader(\"Pragma\",\"No-cache\"); \r\n                   ((HttpServletResponse)response).setHeader(\"Cache-Control\",\"no-cache\"); \r\n                   ((HttpServletResponse)response).setHeader(\"Expires\",\"0\");\/\/\u7981\u6b62\u7f13\u5b58 \r\n\r\n\r\n\u4e09\uff0clistener\r\n\r\n1\uff0c \u5728web.xml\u4e2d\u914d\u7f6e\r\n\r\n   <listener>\r\n       <listener-class>demo.listener.MyContextLoader<\/listener-class>\r\n  <\/listener>\r\n  \/\/\u8fd9\u6837\u670d\u52a1\u5668\u5c31\u4f1a\u5728\u542f\u52a8\u65f6\u521b\u5efaMyContextLoader\u7684\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u5f00\u59cb\u76d1\u542cservlet,session\u7684\u64cd\u4f5c\r\n2, \u5b9e\u73b0\r\n \u5e38\u7528\u7684listener\u6709\uff1a\r\n  \uff081\uff09 ServletContextListener \u76d1\u542cServletContext\u3002\r\n        \u5f53\u521b\u5efaServletContext\u65f6\uff0c\u6fc0\u53d1 contextInitialized(ServletContextEvent sce)\u65b9\u6cd5\uff1b\r\n       \u5f53\u9500\u6bc1ServletContext\u65f6\uff0c\u6fc0\u53d1contextDestroyed(ServletContextEvent sce)\u65b9\u6cd5\u3002\r\n\r\n  \uff082\uff09ServletContextAttributeListener\u76d1\u542c\u5bf9ServletContext\u5c5e\u6027\u7684\u64cd\u4f5c\uff0c\u6bd4\u5982\u589e\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u5c5e\u6027\u3002\r\n\r\n  \uff083\uff09HttpSessionListener \u76d1\u542cHttpSession\u7684\u64cd\u4f5c\u3002\r\n          \u5f53\u521b\u5efa\u4e00\u4e2aSession\u65f6\uff0c\u6fc0\u53d1 session Created(HttpSessionEvent se)\u65b9\u6cd5\uff1b\r\n          \u5f53\u9500\u6bc1\u4e00\u4e2aSession\u65f6\uff0c\u6fc0\u53d1sessionDestroyed (HttpSessionEvent se)\u65b9\u6cd5\u3002\r\n   \r\n\r\n \uff084\uff09HttpSessionAttributeListener \u76d1\u542cHttpSession\u4e2d\u7684\u5c5e\u6027\u7684\u64cd\u4f5c\u3002\r\n        \u5f53\u5728Session\u589e\u52a0\u4e00\u4e2a\u5c5e\u6027\u65f6\uff0c\u6fc0\u53d1 attributeAdded(HttpSessionBindingEvent se) \u65b9\u6cd5\uff1b\r\n        \u5f53\u5728Session\u5220\u9664\u4e00\u4e2a\u5c5e\u6027\u65f6\uff0c\u6fc0\u53d1attributeRemoved(HttpSessionBindingEventse)\u65b9\u6cd5\uff1b\r\n        \u5f53\u5728Session\u5c5e\u6027\u88ab\u91cd\u65b0\u8bbe\u7f6e\u65f6\uff0c\u6fc0\u53d1attributeReplaced(HttpSessionBindingEvent se) \u65b9\u6cd5\u3002 \r\n\r\n\r\n\r\n \r\n\r\n\u56db\uff0cinterceptor\r\n\r\n\r\n1, \u5728struts.xml\u4e2d\u914d\u7f6e\r\n\r\n\u521b\u5efa\u4e00\u4e2astrus.xml\u7684\u5b50\u914d\u7f6e\u6587\u4ef6struts-l99-default.xml\uff0c\u5b83\u7ee7\u627f\u4e0estruts2\u7684struts-default\uff0c\u6b64\u914d\u7f6e\u6587\u4ef6\u662f\u5176\u4ed6\u5b50\u914d\u7f6e\u6587\u4ef6\u7684\u7236\u7c7b\uff0c\u53ea\u8981\u662f\u7ee7\u627f\u4e0e\u8be5\u6587\u4ef6\u7684\u914d\u7f6e\u6587\u4ef6\u6240\u58f0\u660e\u7684\u8def\u5f84\u90fd\u4f1a\u88ab\u5b83\u8fc7\u6ee4 .\r\n\r\n\u65b9\u6cd51. \u666e\u901a\u914d\u7f6e\u6cd5\r\n\r\n<struts>\r\n<package name=\"struts2\" extends=\"struts-default\">\r\n<interceptors>\r\n    <interceptor name=\"myInterceptor\" class=\"edu.hust.interceptor.MyInterceptor\"><\/interceptor>\r\n<\/interceptors>\r\n\r\n\r\n<action name=\"register\" class=\"edu.hust.action.RegisterAction\">\r\n    <result name=\"input\">\/register.jsp<\/result>\r\n    <result>\/result.jsp<\/result>\r\n    \r\n    <!-- \u5728\u81ea\u5b9a\u4e49interceptor\u5e76\u5c06\u5176ref\u65f6, \u7cfb\u7edf\u4f1a\u8986\u76d6\u6389\u9ed8\u8ba4\u7684interceptor-stack(defaultStack), \u4e3a\u4e86\u4fdd\u8bc1\u7cfb\u7edf\u9ed8\u8ba4\u7684defaultStack\u4e0d\u53d7\u5f71\u54cd, \u6211\u4eec\u9700\u8981\u663e\u5f0f\u7684\u5c06\u5176\u5f15\u5165 -->\r\n    <!-- \u6ce8\u610f\u4e24\u4e2ainterceptor-ref\u7684\u987a\u5e8f, \u987a\u5e8f\u4e0d\u540c, \u6267\u884c\u6548\u679c\u4e5f\u4e0d\u540c: \u5148\u914d\u7f6e\u7684\u5148\u6267\u884c\/\u540e\u914d\u7f6e\u7684\u5148\u9000\u51fa(\u5148\u8fdb\u540e\u51fa) -->\r\n    <interceptor-ref name=\"defaultStack\"><\/interceptor-ref>\r\n    <interceptor-ref name=\"myInterceptor\"><\/interceptor-ref>\r\n<\/action>\r\n<\/package>\r\n<\/struts>\r\n\u65b9\u6cd52. \u914d\u7f6e\u62e6\u622a\u5668\u6808(\u5373\u5c06\u591a\u4e2ainterceptor\u4e32\u8054\u7684\u4e00\u79cd\u5143\u7d20)\u3002\u7136\u540e\u5728<action>\u4e2d\u5f15\u5165\u8be5\u62e6\u622a\u5668\u6808\u5c31\u53ef\u4ee5\u4e86\u3002\r\n\r\n \u6267\u884c\u987a\u5e8f\u4e3a\u5148\u914d\u7f6e\u7684\u5148\u6267\u884c\r\n\r\n\r\n  \u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\uff1a\u591a\u4e2aaction\u6709\u76f8\u540c\u7684\u591a\u4e2ainterceptor\u65f6\uff0c\u5982\u4e00\u822c\u81ea\u5df1\u5199\u4e00\u4e2a\uff0c\u7cfb\u7edf\u9ed8\u8ba4\u7684\u6709\u4e00\u4e2a\uff0c\u8981\u6ce8\u5165\u4e24\u4e2a\uff0c\r\n\r\n\u5bf9\u591a\u4e2aaction\u90fd\u5199\u8fd9\u4e24\u4e2a\uff0c\u4e0d\u5229\u4e8e\u4fee\u6539\uff0c\u53ef\u4ee5\u5199\u6210\u4e00\u4e2a\u94fe\uff0c\u53ea\u9700\u5f15\u7528\u6b64\u94fe\u5373\u53ef\u3002\r\n\r\n\r\n(1)\u62e6\u622a\u76ee\u6807\u5bf9\u8c61(\u88ab\u4ee3\u7406\u5bf9\u8c61)\uff0c\u8fd9\u91cc\u76ee\u6807\u5bf9\u8c61\u5c31\u662faction\uff1b(2)\u62e6\u622a\u5668(\u4e00\u4e2a\u7c7b\uff0c\u52a8\u6001\u7684\u5c06\u67d0\u4e9b\u65b9\u6cd5\u63d2\u5165\u5230\u76ee\u6807\u5bf9\u8c61\u7684\u67d0\u65b9\u6cd5\u7684before\u3001after)\uff1b(3)\u5bf9\u76ee\u6807\u5bf9\u8c61\u751f\u6210\u7684(\u52a8\u6001)\u4ee3\u7406\u5bf9\u8c61(\u4ee3\u7406\u5bf9\u8c61\u5185\u90e8\u65b9\u6cd5\u7efc\u5408\u4e86\u76ee\u6807\u5bf9\u8c61\u65b9\u6cd5+\u62e6\u622a\u5668\u65b9\u6cd5)\u3002\u7a0b\u5e8f\u6700\u7ec8\u6267\u884c\u7684\u662f\u76ee\u6807\u5bf9\u8c61\u7684\u4ee3\u7406\uff0c\u800c\u8fd9\u4e2a\u4ee3\u7406\u5df2\u7ecf\u63d2\u5165\u4e86interceptor\u3002\u62e6\u622a\u5668\u4f5c\u7528\uff1a\u62e6\u622aaction\u3002interceptor\u76f8\u5f53\u4e8e\u4e00\u4e2a\u5165\u53e3\u548c\u51fa\u53e3\uff0c\u901a\u8fc7interceptor\u8fdb\u5165action\uff0c\u6267\u884c\u5b8caction\u7684\u4ee3\u7801\u518d\u901a\u8fc7interceptor\u51fa\u53bb\u3002\u9488\u5bf9\"struts2 -- interceptor(Interceptor\u600e\u4e48\u5199)\"\u8fd9\u7bc7\u6587\u7ae0\u7684MyInterceptor.class\u548cMyInterceptor2.class\u3002\u6839\u636e\u4e0b\u9762\u7684\u914d\u7f6e\u6587\u4ef6\u6267\u884c\u7a0b\u5e8f <struts>    <package name=\"struts2\" extends=\"struts-default\">        \r\n<struts>\r\n<package name=\"struts2\" extends=\"struts-default\">\r\n\r\n<interceptors>\r\n    <interceptor name=\"myInterceptor\" class=\"edu.hust.interceptor.MyInterceptor\"><\/interceptor>\r\n\r\n    <interceptor-stack name=\"myInterceptorStack\">\r\n        <interceptor-ref name=\"myInterceptor\"><\/interceptor-ref>\r\n        <interceptor-ref name=\"defaultStack\"><\/interceptor-ref>\r\n    <\/interceptor-stack>\r\n<\/interceptors>\r\n\r\n<action name=\"register\" class=\"edu.hust.action.RegisterAction\">\r\n    <result name=\"input\">\/register.jsp<\/result>\r\n    <result>\/result.jsp<\/result>\r\n    \r\n    <interceptor-ref name=\"myInterceptorStack\"><\/interceptor-ref>\r\n<\/action>\r\n<\/package>\r\n<\/struts>\r\n\u65b9\u6cd53. \u4fee\u6539\u9ed8\u8ba4\u62e6\u622a\u5668\uff0c\u5c06\u81ea\u5b9a\u4e49\u7684\u62e6\u622a\u5668\u6808\u5b9a\u4e49\u4e3astruts2\u7684\u9ed8\u8ba4\u62e6\u622a\u5668\u3002\r\n\r\n<struts>\r\n<package name=\"struts2\" extends=\"struts-default\">\r\n\r\n<interceptors>\r\n    <interceptor name=\"myInterceptor\" class=\"edu.hust.interceptor.MyInterceptor\"><\/interceptor>\r\n    <interceptor-stack name=\"myInterceptorStack\">\r\n        <interceptor-ref name=\"myInterceptor\"><\/interceptor-ref>\r\n        <interceptor-ref name=\"defaultStack\"><\/interceptor-ref>\r\n    <\/interceptor-stack>\r\n<\/interceptors>\r\n\r\n\r\n<!-- \u6b64\u9ed8\u8ba4interceptor\u662f\u9488\u5bf9\u5f53\u524d\u5305\u5185\u6240\u6709action\u7684\uff0c\u82e5\u4e0d\u4e3aaction\u663e\u5f0f\u6307\u5b9ainterceptor,\u5c31\u4f1a\u7528 default-interceptor-ref-->\r\n<!-- \u5982\u679c\u67d0\u4e2aaction\u4e2d\u5f15\u5165\u4e86interceptor, \u5219\u5728\u8fd9\u4e2aaction\u4e2d\u6b64\u9ed8\u8ba4interceptor\u5c31\u4f1a\u5931\u6548 -->\r\n<default-interceptor-ref name=\"myInterceptorStack\"><\/default-interceptor-ref>\r\n\r\n<action name=\"register\" class=\"edu.hust.action.RegisterAction\">\r\n    <result name=\"input\">\/register.jsp<\/result>\r\n    <result>\/result.jsp<\/result>\r\n<\/action>\r\n\r\n<\/package>\r\n<\/struts>\r\n3. extends MethodFilterInterceptor\u7684\u62e6\u622a\u5668\u5982\u4f55\u914d\u7f6e\u54ea\u4e9b\u65b9\u6cd5\u8be5\u62e6\u622a\u3001\u54ea\u4e9b\u65b9\u6cd5\u4e0d\u8be5\u62e6\u622a(\u9488\u5bf9\u65b9\u6cd5\u62e6\u622a\u7684\u914d\u7f6e)\r\n\r\n<struts>\r\n<package name=\"struts2\" extends=\"struts-default\">\r\n\r\n<interceptors>\r\n    <interceptor name=\"myInterceptor3\" class=\"edu.hust.interceptor.MyInterceptor3\"><\/interceptor>\r\n<\/interceptors>\r\n\r\n<action name=\"register\" class=\"edu.hust.action.RegisterAction\" method=\"queryAll\">\r\n    <result name=\"input\">\/register.jsp<\/result>\r\n    <result>\/result.jsp<\/result>\r\n    <!-- myInterceptor3\u62e6\u622a\u5668\u53ea\u5bf9RegisterAction\u4e2d\u7684queryAll()\u65b9\u6cd5\u548cinsert()\u65b9\u6cd5\u8fdb\u884c\u4e86\u62e6\u622a, \u5176\u4ed6\u65b9\u6cd5\u672a\u8fdb\u884c\u62e6\u622a -->\r\n    <interceptor-ref name=\"myInterceptor3\">\r\n        <param name=\"includeMethods\">queryAll, execute<\/param>\r\n    <\/interceptor-ref>\r\n    <interceptor-ref name=\"defaultStack\"><\/interceptor-ref>\r\n<\/action>\r\n\r\n<action name=\"register\" class=\"edu.hust.action.RegisterAction\" method=\"insert\">\r\n    <result <span\r\n2, \u5b9e\u73b0\r\ninterceptor\u7c7b\u4f3c\u4e8efilter, \u81ea\u5b9a\u4e49filter\u662f\u5b9e\u73b0javax.servlet.Filter\u6765\u5b8c\u6210\uff0c\u800cinterceptor\u7c7b\u4f3c\uff0c\u5b83\u901a\u8fc7\u5b9e\u73b0com.opensymphony.xwork2.interceptor.Interceptor\u6765\u81ea\u5b9a\u4e49\u5b9e\u73b0\u3002\r\n\u8be5\u63a5\u53e3\u63d0\u4f9b\u4e86\u4e09\u4e2a\u65b9\u6cd5\uff1a\r\n\r\n1)      void init(); \u5728\u8be5\u62e6\u622a\u5668\u88ab\u521d\u59cb\u5316\u4e4b\u540e\uff0c\u5728\u8be5\u62e6\u622a\u5668\u6267\u884c\u62e6\u622a\u4e4b\u524d\uff0c\u7cfb\u7edf\u56de\u8c03\u8be5\u65b9\u6cd5\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u62e6\u622a\u5668\u800c\u8a00\uff0c\u6b64\u65b9\u6cd5\u53ea\u6267\u884c\u4e00\u6b21\u3002\r\n\r\n2)      void destroy();\u8be5\u65b9\u6cd5\u8ddfinit()\u65b9\u6cd5\u5bf9\u5e94\u3002\u5728\u62e6\u622a\u5668\u5b9e\u4f8b\u88ab\u9500\u6bc1\u4e4b\u524d\uff0c\u7cfb\u7edf\u5c06\u56de\u8c03\u8be5\u65b9\u6cd5\u3002\r\n\r\n3)      String intercept(ActionInvocation invocation) throws Exception; \u8be5\u65b9\u6cd5\u662f\u7528\u6237\u9700\u8981\u5b9e\u73b0\u7684\u62e6\u622a\u52a8\u4f5c\u3002\u8be5\u65b9\u6cd5\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u4f5c\u4e3a\u903b\u8f91\u89c6\u56fe\u3002\r\n\r\n\u9664\u6b64\u4e4b\u5916\uff0c\u7ee7\u627f\u7c7bcom.opensymphony.xwork2.interceptor.AbstractInterceptor\u662f\u66f4\u7b80\u5355\u7684\u4e00\u79cd\u5b9e\u73b0\u62e6\u622a\u5668\u7c7b\u7684\u65b9\u5f0f\uff0c\u56e0\u4e3a\u6b64\u7c7b\u63d0\u4f9b\u4e86init()\u548cdestroy()\u65b9\u6cd5\u7684\u7a7a\u5b9e\u73b0\uff0c\u8fd9\u6837\u6211\u4eec\u53ea\u9700\u8981\u5b9e\u73b0intercept\u65b9\u6cd5\u3002\r\n\r\n\r\n\r\n\r\n3\uff0c \u5e94\u7528\r\n\r\n\r\n\r\nimport java.util.Map;\r\n\r\nimport com.opensymphony.xwork2.Action;\r\n\r\nimport com.opensymphony.xwork2.ActionInvocation;\r\n\r\nimport com.opensymphony.xwork2.interceptor.AbstractInterceptor;\r\n\r\n\/**\r\n\r\n* \u6743\u9650\u68c0\u67e5\u62e6\u622a\u5668\r\n\r\n*\r\n\r\n* @author qiujy\r\n\r\n* @version 1.0\r\n\r\n*\/\r\n\r\npublic class AuthorizationInterceptor extends AbstractInterceptor {\r\n\r\n\/*\r\n\r\n* \u62e6\u622aAction\u5904\u7406\u7684\u62e6\u622a\u65b9\u6cd5\r\n\r\n*\r\n\r\n*\/\r\n\r\npublic String intercept(ActionInvocation invocation) throws \r\n\r\nException {\r\n\r\n\r\n\r\n\r\n\/\/\u6e05\u9664\u540e\u53f0\u9875\u9762\u7684\u7f13\u5b58\r\nHttpServletResponse response = ServletActionContext.getResponse();\r\n\r\n\r\n\r\n\/\/ ServletActionContext \u81ea\u52a8\u63d0\u4f9b\uff0c\u53ef\u8ba9\u5176\u83b7\u5f97request,session,response\u7b49\r\nresponse.setHeader(\"Pragma\",\"No-cache\");\r\nresponse.setHeader(\"Cache-Control\",\"no-cache\");\r\nresponse.setHeader(\"Expires\",\"0\");\r\n\r\n\r\n\r\n\r\nMap session = invocation.getInvocationContext().getSession();\r\nString userName = (String) session.get(\"userName\");\r\n\r\n\r\n\r\nif (null != userName &#038;&#038; userName.equals(\"test\")) {\r\n\r\n    System.out.println(\"\u62e6\u622a\u5668\uff1a\u5408\u6cd5\u7528\u6237\u767b\u5f55---\");\r\n\r\n    return invocation.invoke(); \/\/\u4fdd\u6301\u539f\u6765\u7684\u6d41\u7a0b\u4e0d\u6539\u53d8\r\n\r\n} else {\r\n\r\n    System.out.println(\"\u62e6\u622a\u5668\uff1a\u7528\u6237\u672a\u767b\u5f55---\");\r\n\r\n    return Action.LOGIN; \/\/\u8fd4\u56de\u5230\u914d\u7f6e\u6587\u4ef6\u4e2d\u540d\u5b57\u4e3alogin\u7684action\r\n\r\n}\r\n\r\n}\r\n\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u56db\u79cd\u5171\u540c\u70b9\uff1a \u5bf9\u4e00\u7c7burl,\u6216\u6240\u6709url\u8fdb\u884c\u4e1a\u52a1\u5904\u7406 \u5bf9\u5404\u79cdurl\u4e4b\u7c7b\u8fdb\u884c\u5339\u914d\uff0c\u67e5\u627e\uff0c\u6267\u884c\u76f8\u5e94\u64cd\u4f5c\uff0c\u4e0eacti [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-951","post","type-post","status-publish","format-standard","hentry","category-ssh"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/comments?post=951"}],"version-history":[{"count":0,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/951\/revisions"}],"wp:attachment":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/media?parent=951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/categories?post=951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/tags?post=951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}