直接上代码

Java

    @ResponseBody
    @RequestMapping(value = "/statistics", method = RequestMethod.GET, produces = { "application/json;charset=UTF-8" })
    public Map<String,Object> getShipPrediction(@RequestParam(value = "date",required=false) String date,ServletRequest req, ServletResponse res) {
        
        HttpServletRequest request = (HttpServletRequest)req;
        HttpServletResponse response = (HttpServletResponse) res;
        String originHeader = request.getHeader("Origin");
        
        // 允许哪些Origin发起跨域请求,nginx下正常
        // response.setHeader( "Access-Control-Allow-Origin", config.getInitParameter( "AccessControlAllowOrigin" ) );
        response.setHeader( "Access-Control-Allow-Origin", "*" );
        // 允许请求的方法
        response.setHeader( "Access-Control-Allow-Methods", "POST,GET,OPTIONS,DELETE,PUT" );
        // 多少秒内，不需要再发送预检验请求，可以缓存该结果
        response.setHeader( "Access-Control-Max-Age", "3600" );
        // 表明它允许跨域请求包含xxx头
        response.setHeader( "Access-Control-Allow-Headers", "x-auth-token,Origin,Access-Token,X-Requested-With,Content-Type, Accept,Authorization" );
        //response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");  
        //是否允许浏览器携带用户身份信息（cookie）
        response.setHeader( "Access-Control-Allow-Credentials", "true" );
        // response.setHeader( "Access-Control-Expose-Headers", "*" );
        
        return shipPredictionStatisticsService.returnShipPredictionMap(date);
    }

JavaScript

$(document).ready(function(){
    //发起http请求
    $.ajax({
        headers: {
            Accept: "application/json; charset=utf-8",
            Authorization: window.localStorage.Authorization
        },
        url: "http://localhost:8888/menuListById",
        type: "get",
        data:{
            qqq:'222' 
        },
        success: function (data) {
            console.log(data)
        },
        fail:function(e){
        }
    });

})

PS:后台或者使用过滤器(一次性解决问题)

package 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;
 
/**
 * 头部过滤器
 * @author 
 */
public class HeaderFilter implements Filter{
 
    public void destroy() {
        
    }
 
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest)req;
        HttpServletResponse response = (HttpServletResponse) res;
        String originHeader = request.getHeader("Origin");
        
        // 允许哪些Origin发起跨域请求,nginx下正常
        // response.setHeader( "Access-Control-Allow-Origin", config.getInitParameter( "AccessControlAllowOrigin" ) );
        response.setHeader( "Access-Control-Allow-Origin", "*" );
        // 允许请求的方法
        response.setHeader( "Access-Control-Allow-Methods", "POST,GET,OPTIONS,DELETE,PUT" );
        // 多少秒内，不需要再发送预检验请求，可以缓存该结果
        response.setHeader( "Access-Control-Max-Age", "3600" );
        // 表明它允许跨域请求包含xxx头
        response.setHeader( "Access-Control-Allow-Headers", "x-auth-token,Origin,Access-Token,X-Requested-With,Content-Type, Accept,Authorization" );
        //response.setHeader("Access-Control-Allow-Headers", "Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With,userId,token");  
        //是否允许浏览器携带用户身份信息（cookie）
        response.setHeader( "Access-Control-Allow-Credentials", "true" );
        // response.setHeader( "Access-Control-Expose-Headers", "*" );
        if (request.getMethod().equals( "OPTIONS" )) {
            response.setStatus( 200 );
            return;
        }
        chain.doFilter(request, response);  
    }
 
    public void init(FilterConfig arg0) throws ServletException {
        
    }
}