解決瀏覽器相容一直是個頭疼的問題，尤其是IE瀏覽器，最近開發上傳檔案介面的時候，由於IE8及以下不相容JS上傳元件，所以採取了iframe框架，利用form表單提交，遺憾的是，返回報文格式：application/json 的返回報文被IE8當作檔案給下載了，下載了。。。當時差點沒石化。。

produces = MediaType.TEXT_PLAIN_VALUE 還是會有問題的。controller方法體內會正常執行並返回，但是spring
 

框架就報錯了，會報406錯誤， HTTP 406: The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers.

@RequestMapping(value = "/test", method = {RequestMethod.POST,RequestMethod.GET}, produces = MediaType.TEXT_PLAIN_VALUE)
@ResponseBody
public String test(HttpServletRequest request) {
    return JsonUtil.getJsonStr(new Response<String>());
}