前端ajax用POST方式: $.ajax({ type : "POST", url : "**/save.do", async : true, dataType : "json", data : "data=中文", success : function(resp) { alert(resp.cr); //必须严格按照JSON的标准来 }, error : function() { alert('数据保存失败!'); } });后台直接接收data参数即可: @RequestMapping(value = "**/save.do", method = RequestMethod.POST) public void saveBeizhu( @RequestParam(value = "data", required = false) String data, HttpServletRequest request, HttpServletResponse response) throws Exception{ request.setCharacterEncoding("UTF-8"); log.error(data); response.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); response.getWriter().print("{\"cr\":\"保存成功!\"}"); }