#### 實體類 ``` import lombok.Getter; import lombok.NoArgsConstructor; import lombok.Setter; import lombok.ToString; @NoArgsConstructor @Setter @Getter @ToString public class ErrorMessage<T> { private Integer code; private String msg; private T data; } ``` #### 全局異常類 ``` // 輔助類，可以指定掃描范圍 @ControllerAdvice public class GlobalExceptionHandler { // 表示攔截異常 @ExceptionHandler(RuntimeException.class) @ResponseBody public ErrorMessage<String> exceptionHandler(HttpServletRequest request, Exception exception){ ErrorMessage<String> errorMessage = new ErrorMessage<String>(); errorMessage.setCode(1); errorMessage.setMsg("訪問異常"); errorMessage.setData(exception.getMessage()); return errorMessage; } } ```