定义公共异常

    1. @Data
    2. public class BaseException extends Exception{
    3.     private int code;
    4.     private String msg;
    6.     public BaseException() {
    7.         super();
    8.         this.code = 99999;
    9.         this.msg = "服务异常，请联系开发人员";
    10.     }
    12.     public BaseException(int code, String msg) {
    13.         super();
    14.         this.code = code;
    15.         this.msg = msg;
    16.     }
    17. }
    19. public class VerificationCodeException extends BaseException{
    20.     private VerificationCodeException() {
    21.         super(100001, "验证码错误");
    22.     }
    24.     public static VerificationCodeException throwVerificationCodeException() {
    25.         return new VerificationCodeException();
    26.     }
    27. }

    异常控制器

    1. @ControllerAdvice
    2. public class ExceptionController {
    4.     @ExceptionHandler({ BaseException.class }) // 当发生BaseException类(及其子类)的异常时，进入该方法
    5.     public ModelAndView baseExceptionHandler(BaseException e) {
    6.         ModelAndView mv = new ModelAndView();
    7.         mv.addObject("code", e.getCode());
    8.         mv.addObject("message", e.getMessage());
    9.         mv.setViewName("myerror");// 跳转到resource/templates/myerror.html页面
    10.         return mv;
    11.     }
    13.     @ExceptionHandler({ Exception.class }) // 当发生Exception类的异常时，进入该方法
    14.     public ModelAndView exceptionHandler(Exception e) {
    15.         ModelAndView mv = new ModelAndView();
    16.         mv.addObject("code", 99999);// 其他异常统一编码为99999
    17.         mv.addObject("message", e.getMessage());
    18.         mv.setViewName("myerror");// 跳转到resource/templates/myerror.html页面
    19.         return mv;
    20.     }
    21. }

    @ControllerAdvice> @RestControllerAdvice

    区别也就是 和 Controller 和 RestCOntroller 一样


    前端页面**

    1. <!DOCTYPE html>
    2. <html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>error</title>
    6. </head>
    7. <body>
    8.     <div>服务异常</div>
    9.     错误码：
    10.     <span th:text="${code}"></span>
    11.     错误信息：
    12.     <span th:text="${message}"></span>
    13. </body>
    14. </html>