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后臺增加filter，注意不要把druid也屏蔽了

import java.io.IOException;import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import org.apache.shiro.SecurityUtils; import org.apache.shiro.subject.Subject;import cn.zsmy.constant.Constant; import cn.zsmy.entity.User;/** * session超時過濾 * * @date 2016-10-20*/ public class SessionFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest httpServletRequest = (HttpServletRequest) request; HttpServletResponse httpServletResponse = (HttpServletResponse) response; //只過濾了ajax請求時session超時if (httpServletRequest.getHeader("x-requested-with") != null && httpServletRequest.getHeader("x-requested-with").equalsIgnoreCase("XMLHttpRequest")) { Subject subject = SecurityUtils.getSubject();User user = (User) subject.getPrincipal();if(user == null){Constant.MY_LOG.debug("filter：sessionstatus timeout！");//如果是ajax請求響應頭會有，x-requested-with httpServletResponse.setHeader("sessionstatus", "timeout");//在響應頭設置session狀態 return; }} chain.doFilter(request, response); } @Override public void destroy() { } }

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web.xml加入過濾器配置，注意不要把druid也屏蔽了，url-pattern可以指定過濾的東西

<!--session超時過濾處理 --><filter><filter-name>sessionFilter</filter-name><filter-class>cn.zsmy.palmdoctor.filter.SessionFilter</filter-class></filter><filter-mapping><filter-name>sessionFilter</filter-name><!-- <url-pattern>/*</url-pattern> --><url-pattern>*.do</url-pattern></filter-mapping>

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在公共的js文件中加入以下全局控制ajax的配置

<c:set var="appPath" value="<%=request.getContextPath()%>"/>

<script type="text/javascript"> $(function(){$.ajaxSetup ({cache: false, //關閉AJAX緩存async:false, //同步請求contentType:"application/x-www-form-urlencoded;charset=utf-8", complete:function(XMLHttpRequest,textStatus){ //通過XMLHttpRequest取得響應頭，sessionstatus， var sessionstatus=XMLHttpRequest.getResponseHeader("sessionstatus"); if(sessionstatus=="timeout"){ alert("由于您長時間未操作,登錄已失效,請重新登錄");parent.location.href = "${appPath}/login.do";} } }); }); </script>

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