shiro 攔截器實現session到期攔截ajax請求的處理

攔截器代碼：

package com.xlqh.outlook.shirofilter;import java.io.IOException;import org.apache.shiro.web.filter.PathMatchingFilter;import com.xlqh.outlook.MyShiroConstants.MyShiroConstants;import com.xlqh.outlook.SessionManagement.SessionManagement;import com.xlqh.outlook.entity.yuuser;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;//自訂攔截器,Session到期AJAX處理public class SessionExpiredFilter extends PathMatchingFilter {    @Override       protected boolean onPreHandle(ServletRequest  request, ServletResponse response, Object mappedValue) throws Exception {          yuuser sys = (yuuser) SessionManagement.getSession(MyShiroConstants.Session_USER);             if(sys==null){            System.out.println("session到期");            if ("XMLHttpRequest".equalsIgnoreCase(((HttpServletRequest) request).getHeader("X-Requested-With"))) {                //ajax的sesson處理                //返回狀態代碼                 onLoginFail(response);                return false;                }            else{                //普通的處理，直接給到下一個攔截器                 return true;               }        }        return true;    }    //session到期給403狀態代碼    private void onLoginFail(ServletResponse response) throws IOException {        HttpServletResponse httpResponse = (HttpServletResponse) response;        httpResponse.setStatus(403);        httpResponse.getWriter().write("session逾時了");    }}

前台頁面全域需要處理的，基於jquery的ajax請求都會被攔截

全域的js片段：

var timeoutlogin="/login?code=22";    $.ajaxSetup({        contentType : "application/x-www-form-urlencoded;charset=utf-8",        cache : false,        complete : function(data, TS) {            //對返回的資料data做判斷            debugger;            //403是後台攔截器那兒定義的，            if (data.status == 403) {                //session到期的話，就location到一個頁面                location.href=timeoutlogin;                return;            }        }    });

ajax請求的js：

function test() {        var valusid = $("#select2").val();        $.post("yurole/selectuserrole", {"userid" : valusid}, function(data) {            $("#div2").html("");            debugger;            for ( var i = 0; i < data.length; i++) {                $("#div2").append("<p><a href='"+data[i].menuUlr+"' target='content' >"+ data[i].menuName + "<a/></p>");            }        });    }

shiro配置：
需要把session攔截器放在登入攔截器前面