ajax不能重定向
ajax请求是不支持重定向的,因为它是局部刷新,不重新加载页面。
过滤器
package com.wjz.demo; 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 XMLHttpRequestTest implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse resp = (HttpServletResponse) response; resp.setHeader("Access-Control-Allow-Origin", "*"); resp.setHeader("Access-Control-Allow-Credentials", "true"); redirect(req, resp); } private void redirect(HttpServletRequest req, HttpServletResponse resp) throws IOException { if("XMLHttpRequest".equals(req.getHeader("X-Requested-With"))){ //前端需要判断是否是重定向 resp.setHeader("REDIRECT", "true"); //需要重定向的路径 resp.setHeader("CONTENTPATH", "http:127.0.0.1:8080/login.do"); resp.setStatus(HttpServletResponse.SC_FORBIDDEN); }else{ resp.sendRedirect("http:127.0.0.1:8080/login.do"); } } @Override public void destroy() { } }
前端JS
$.ajaxSetup({ complete:function(jqxhr, status){ if("true" == jqxhr.getResponseHeader("REDIRECT")){ //若HEADER中含有REDIRECT说明后端想重定向, var win = window; while(win != win.top){ win = win.top; } win.location.href = jqxhr.getResponseHeader("CONTENTPATH");//将后端重定向的地址取出来,使用win.location.href去实现重定向的要求 } } });