如何在Springmvc中利用ajax实现一个跨域请求

package com.util;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;public class CommonInterceptor extends HandlerInterceptorAdapter {public boolean preHandle(HttpServletRequest request,HttpServletResponse response, Object handler) throws Exception {response.setHeader("Access-Control-Allow-Origin", "*");response.setHeader("Access-Control-Allow-Methods", "*");response.setHeader("Access-Control-Max-Age", "3600");response.setHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept");response.setHeader("Access-Control-Allow-Credentials", "true"); // 是否允许浏览器携带用户身份信息（cookie）return true;}}