publicclassHelloWorld{{"name":"\u767d\u5bcc\u7f8e","say":"\u54b1\u4eec\u7ed3\u5a5a\u5427!"}

將 @ControllerAdvice 換成 @RestControllerAdvice

進error是因為js無法識別你的data對象，因為你的data對象不是json格式，所以進入了你定義的回調函數的error方法。其實請求是成功的，只是你用的注解不是@RestControllerAdvice

@ExceptionHandler(value?=?Exception.class)
public?void?exceptionHandler(HttpServletRequest?request,?HttpServletResponse?response,
?????????????????????????????Exception?e,?Model?model)?throws?Exception?{
????if?(isAjax(request))?{
????????//?向response中寫json數據
????????response.setCharacterEncoding("utf-8");
????????response.setContentType("application/json;?charset=utf-8");
????????PrintWriter?writer?=?response.getWriter();
????????writer.write(gson.toJson(JsonResult.errorException(e.getMessage())));
????}?else?{
????????request.setAttribute("exception",?e);
????????request.setAttribute("url",?request.getRequestURL());
????????request.getRequestDispatcher("/templates/error.html").forward(request,
????????????????response);
????}
}

同問啊

怎么解決的，我也感覺很奇怪

已根據@玩蠟筆小破孩同學的方法解決了問題，感謝