Spring 3.2.* MVC通过Ajax获取JSON数据报406错误

　　问题描述：通过@ResponseBody标签返回JSON数据的方法都报406错，具体为

The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers () 

　　百度以后，这位仁兄给了我灵感，http://digdata.me/archives/96/

　　原因是spring将放在responseBody的数据头写成 [text/html] ，而JSON应该是 application/json

　　直接在@RequestMapping修饰的方法上添加 produces="application/json"

　　形如：

    @RequestMapping(value="/messageList",produces="application/json")
    public @ResponseBody List<MessageModel> messageList(Model model){
        return messageService.getMessageList();
    }

　　问题解决！！