Servlet使用

Servlet使用

1.1重定向(如果对方不支持cookie,回写sessionID进行session跟踪)  response.sendRedirect(response.encodeRedirectURL(request.getContextPath()+"/next")); ****************************************************************** 1.2转发  RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(url);  dispatcher.forward(request,response); ****************************************************************** 1.3字符   request.setCharacterEncoding("utf-8");   response.setContentType("text/html;charset=utf-8"); ****************************************************************** String servletPath = request.getServletPath();   servletPath = servletPath.substring(servletPath.lastIndexOf("/") + 1);   String operation = servletPath.substring(0, servletPath.indexOf(".do")); 1.设置连接超时时间(分钟)  <session-config>   <session-timeout>50</session-timeout>  </session-config> ****************************************************************** 4.相对路径匹配  1>绝对匹配 /xx/yy  2>后缀匹配 *.xx  3>后面匹配 /xx/* ****************************************************************** 5.监听器 5.1ServletRequestListener    getServletContext()    getServletRequest()  requestDestroyed(ServletRequestEvent)  requestInitialized(ServletRequestEvent) 5.2HttpSessionListener    getSession()  sessionCreated(HttpSessionEvent)  sessionDestroyed(HttpSessionEvent) 5.3ServletContextListener    getServletContext()  contextInitialized(ServletContextEvent)  contextDestroyed(ServletContextEvent)   5.4ServletRequestAttributeListener    getName()    getValue()  attributeAdded(ServletRequestAttributeEvent)  attributeRemoved(ServletRequestAttributeEvent)  attributeReplaced(ServletRequestAttributeEvent) 5.5HttpSessionAttributeListener    getName()    getValue()    getSession()  attributeAdded(HttpSessionBindingEvent)  attributeRemoved(HttpSessionBindingEvent)  attributeReplaced(HttpSessionBindingEvent) 5.6ServletContextAttributeListener    getName()    getValue()  attributeAdded(ServletContextAttributeEvent)  attributeRemoved(ServletContextAttributeEvent)  attributeReplaced(ServletContextAttributeEvent)