处理前端人员提出的接口跨域问题

    public EiInterfaceQZPO toMail(String biz,HttpServletResponse response){
        response.setHeader("Access-Control-Allow-Origin", "*");  
          
        response.setHeader("Access-Control-Allow-Headers", "Content-Type,Content-Length, Authorization, Accept,X-Requested-With");  
      
        response.setHeader("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");  
      
        response.setHeader("X-Powered-By","Jetty");