jq-Ajax跨域解决方法

// 前端：var urls = 'http://10.123.123.63:8086/BDC/r?wf_num=R_YTCF_B006';   var modules = {       "reqData": {           "type": "FDZL",           "value": "B1栋办公 10层1011房"       }   }    $.ajax({           type: "POST",           url: urls,           async: true,             data: JSON.stringify(modules),           contentType: "text/plain; charset=utf-8",           dataType: "json",           success: function(data) {               console.log(data)           }       });// 后端：  java   import javax.servlet.http.*;   HttpServletResponse httpResponse =  BeanCtx.getResponse();   httpResponse.setHeader("Access-Control-Allow-Origin", "*");