Jquery Ajax 返回值传递到前台

var callbackMsg ;$.ajax({       type:"GET",url:'<%=request.getContextPath()%>/tagServletMaintain/'+msg+'?_method=getRelated',async :false,success:function(data){ callbackMsg="已有 "+data+" 篇资讯使用选中的标签，是否继续删除？";}      });

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public void renderGetRelated(RenderContext context, String ids)throws Exception {PrintWriter pwriter = this.getHttpServletResponse(context).getWriter();pwriter.print(tagService.getRelated(ids));pwriter.close();}

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