/**
     * 解决响应跨域问题
     * @param response
     * @return
     */
    public static HttpServletResponse setCross(HttpServletResponse response){
        //解决跨域问题
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Headers", "token,device,Last-Modified,Origin,Content-Type,Content-Length," +
                " Authorization, Accept,X-Requested-With,x-prototype-version");
        response.setHeader("Access-Control-Allow-Methods", "HEAD,PUT,POST,GET,DELETE,OPTIONS");
        response.setHeader("Access-Control-Allow-Credentials", "true"); //是否支持cookie跨域
        return response;
    }