傳統的基于B/S的應用中，Session會話超時后通常是跳轉到應用的首頁，但Ajax請求的處理方式有些不同，下面簡單介紹一下Ajax請求的Session超時處理(超時后返回首頁)
1.首先創建一個Filter
- 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;
-
- public class AjaxSessionTimeoutFilter implements Filter {
-
- public void destroy() {
-
- }
-
- public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
- HttpServletRequest req = (HttpServletRequest) request;
- HttpServletResponse res = (HttpServletResponse) response;
- // 判斷session里是否有用戶信息
- if (req.getSession().getAttribute("SPRING_SECURITY_CONTEXT") == null){
- // 如果是ajax請求響應頭會有，x-requested-with；
- if (req.getHeader("x-requested-with") != null && req.getHeader("x-requested-with").equalsIgnoreCase("XMLHttpRequest")){
- res.setStatus(911);//表示session timeout
- }else{
- chain.doFilter(req, res);
- }
- }else{
- chain.doFilter(req, res);
- }
- }
-
- public void init(FilterConfig chain) throws ServletException {
-
- }
- }
- <filter>
- <filter-name>ajaxSessionTimeout</filter-name>
- <filter-class>org.tshark.framework.web.filter.AjaxSessionTimeoutFilter</filter-class>
- </filter>
- <filter-mapping>
- <filter-name>ajaxSessionTimeout</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- $.ajaxSetup({
- contentType : "application/x-www-form-urlencoded;charset=utf-8",
- complete : function(xhr, textStatus) {
- $.ts.hideLoading();
- //session timeout
- if (xhr.status == 911) {
- window.location = rootPath + "/";//返回應用首頁
- return;
- }
- }
- });