@ControllerAdvice + @ExceptionHandler定义全局异常处理

错误示例：

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public CommonResult<String> login(@RequestBody @Valid LoginRequest loginRequest,
                                      HttpServletRequest request, HttpServletResponse response) {
        try {
            loginService.login(loginRequest, request, response);
        } catch (Exception e) {
            return CommonResult.error(e.getMessage());
        }
        return CommonResult.ok();
    }

正确示例：

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public CommonResult<String> login(@RequestBody @Valid LoginRequest loginRequest,
                                      HttpServletRequest request, HttpServletResponse response) {
        loginService.login(loginRequest, request, response);
        return CommonResult.ok();
    }

问题描述：

调用接口时用户名或密码错误触发org.springframework.security.authentication.BadCredentialsException，但未被全局异常处理捕获

解决方法：

去除controller中的try..catch。定义全局异常处理后，不要在每个接口中try...catch了

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20241104更新

【问题描述】更清晰的描述是，当BadCredentialsException异常抛出后就被try...catch处理掉了，所以未触发全局异常处理