session过期后自动跳转到登陆页
session过期后自动跳转到登陆页http://blog.csdn.net/lovesomnus/article/details/49582885
session过期后自动跳转到登陆页 http://my.oschina.net/u/1432675/blog/297839
1、web.xml中添加过滤器配置
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Js代码 <filter> <filter-name>sessionFilter</filter-name> <filter-class>com.orchestrall.web.helper.session.SessionFilter</filter-class> </filter> <filter-mapping> <filter-name>sessionFilter</filter-name> <url-pattern>/actions/*</url-pattern> </filter-mapping> |
2、新建SessionFilter类，实现Filter接口。
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Java代码 public class SessionFilterimplements Filter { public void destroy() { // TODO Auto-generated method stub } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest httpRequest = (HttpServletRequest) request; HttpServletResponse httpResponse = (HttpServletResponse) response; HttpSession session = httpRequest.getSession(); // 登陆url String loginUrl = httpRequest.getContextPath() + "/admin/login.jsp"; String url = httpRequest.getRequestURI(); String path = url.substring(url.lastIndexOf("/")); // 超时处理，ajax请求超时设置超时状态，页面请求超时则返回提示并重定向 if (path.indexOf(".action") != -1 && session.getAttribute("LOGIN_SUCCESS") == null) { // 判断是否为ajax请求 if (httpRequest.getHeader("x-requested-with") != null && httpRequest.getHeader("x-requested-with") .equalsIgnoreCase("XMLHttpRequest")) { httpResponse.addHeader("sessionstatus", "timeOut"); httpResponse.addHeader("loginPath", loginUrl); chain.doFilter(request, response);// 不可少，否则请求会出错 } else { String str = "<script language='javascript'>alert('会话过期,请重新登录');" + "window.top.location.href='" + loginUrl + "';</script>"; response.setContentType("text/html;charset=UTF-8");// 解决中文乱码 try { PrintWriter writer = response.getWriter(); writer.write(str); writer.flush(); writer.close(); } catch (Exception e) { e.printStackTrace(); } } } else { chain.doFilter(request, response); } } @Override public void init(FilterConfig arg0) throws ServletException { // TODO Auto-generated method stub } } |
3、客户端JS，用于ajax请求session超时
对于jquery
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Js代码 <script type="text/javascript"> $(document).ajaxComplete(function(event, xhr, settings) { if(xhr.getResponseHeader("sessionstatus")=="timeOut"){ if(xhr.getResponseHeader("loginPath")){ alert("会话过期，请重新登陆!"); window.location.replace(xhr.getResponseHeader("loginPath")); }else{ alert("请求超时请重新登陆 !"); } } }); </script> |
对于extjs的ajax请求
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Js代码 Ext.Ajax.on('requestcomplete',checkUserSessionStatus, this); function checkUserSessionStatus(conn,response,options){ if(response.getResponseHeader("sessionstatus") == 'timeout'){ if(response.getResponseHeader("loginPath")){ alert("会话过期，请重新登陆!"); window.top.location.href = response.getResponseHeader("loginPath"); }else{ alert("请求超时请重新登陆 !"); } } } |
如果使某个ajax请求不受全局方法的影响，那么可以在使用$.ajax()方法时，将参数中的global设置为false，jquery代码如下：
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Js代码 $.ajax({ url:"test.html", global:false//不触发全局ajax事件 }) |
