SpringBoot实现全局异常处理方法总结

public int div(int a ,int b){
        int c=0;
        try{
           c=a/b;
        }catch (Exception ex){
            ex.printStackTrace();
        }
        return  c;
    }

@ControllerAdvice
public class GlobalExceptionHandler {
   @ResponseBody
    @ExceptionHandler(Exception.class)
    public CommonResult exceptionHandler(HttpServletRequest request, Exception exception) throws Exception {    
        Map<String, Object> result = new HashMap<>(3);
        String message =exception.getMessage()+request.getRequestURL().toString();
        return CommonResult.failed(message);
    }
}

public class ServiceException extends RuntimeException {
    private IErrorCode errorCode;
    public ServiceException(IErrorCode errorCode) {
        super(errorCode.getMessage());
        this.errorCode = errorCode;
    }
    public ServiceException(String message) {
        super(message);
    }
    public ServiceException(Throwable cause) {
        super(cause);
    }
    public ServiceException(String message, Throwable cause) {
        super(message, cause);
    }
    public IErrorCode getErrorCode() {
        return errorCode;
    }
}

@ControllerAdvice
public class GlobalExceptionHandler {
    /**
     * 处理所有Service层异常
     */
    @ResponseBody
    @ExceptionHandler(value = ServiceException.class)
    public CommonResult handle(ServiceException e) {
        if (e.getErrorCode() != null) {
            return CommonResult.failed(e.getErrorCode());
        }
        return CommonResult.failed(e.getMessage());
    }
    /**
     * 处理所有不可知的异常
     */
    @ResponseBody
    @ExceptionHandler(Exception.class)
    public CommonResult exceptionHandler(HttpServletRequest request, Exception exception) throws Exception {
     
        Map<String, Object> result = new HashMap<>(3);
        String message =exception.getMessage()+request.getRequestURL().toString();
        return CommonResult.failed(message);
    }
 
}

@Data
@EqualsAndHashCode(callSuper = false)
public class UserLoginParam {
    @NotEmpty
    private String username;
    @NotEmpty
    private String password;
}

@ApiOperation(value = "登录以后返回token")
    @RequestMapping(value = "/login", method = RequestMethod.POST)
    @ResponseBody
    public CommonResult login(@Validated @RequestBody UmsAdminLoginParam umsAdminLoginParam) {
        String token = adminService.login(umsAdminLoginParam.getUsername(), umsAdminLoginParam.getPassword());
        if (token == null) {
            return CommonResult.validateFailed("用户名或密码错误");
        }
        Map<String, String> tokenMap = new HashMap<>();
        tokenMap.put("token", token);
        tokenMap.put("tokenHead", tokenHead);
        return CommonResult.success(tokenMap);
    }

@ResponseBody
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public CommonResult handleValidException(MethodArgumentNotValidException e) {
        BindingResult bindingResult = e.getBindingResult();
        String message = null;
        if (bindingResult.hasErrors()) {
            FieldError fieldError = bindingResult.getFieldError();
            if (fieldError != null) {
                message = fieldError.getField()+fieldError.getDefaultMessage();
            }
        }
        return CommonResult.validateFailed(message);
    }

@ControllerAdvice
public class GlobalExceptionHandler {
    @ResponseBody
    @ExceptionHandler(value = ApiException.class)
    public CommonResult handle(ApiException e) {
        if (e.getErrorCode() != null) {
            return CommonResult.failed(e.getErrorCode());
        }
        return CommonResult.failed(e.getMessage());
    }
    @ResponseBody
    @ExceptionHandler(Exception.class)
    public CommonResult exceptionHandler(HttpServletRequest request, Exception exception) throws Exception {
        Map<String, Object> result = new HashMap<>(3);
        String message =exception.getMessage()+request.getRequestURL().toString();
        return CommonResult.failed(message);
       // return result;
    }
    @ResponseBody
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public CommonResult handleValidException(MethodArgumentNotValidException e) {
        BindingResult bindingResult = e.getBindingResult();
        String message = null;
        if (bindingResult.hasErrors()) {
            FieldError fieldError = bindingResult.getFieldError();
            if (fieldError != null) {
                message = fieldError.getField()+fieldError.getDefaultMessage();
            }
        }
        return CommonResult.validateFailed(message);
    }
}