6.8 错误全局处理

Ramsayi2022-10-312024-01-16

6.8 错误全局处理

实现步骤：

第 1 步：错题体数据结构

错误信息采用全局统一的数据格式

{
    "statusCode": 400,
    "error": "registration-error-email-exists",
    "message": "已存在使用此电子邮件地址的帐户"
}

statusCode 遵循 http status 标准
error 是一个错误文字标识
message 是错误描述，你可以显示给客户

第 2 步：错误数据 model

lib/common/models/error_message.dart

/// 错误体信息
class ErrorMessageModel {
  int? statusCode;
  String? error;
  String? message;

  ErrorMessageModel({
    this.statusCode,
    this.error,
    this.message,
  });

  factory ErrorMessageModel.fromJson(Map<String, dynamic> json) {
    return ErrorMessageModel(
      statusCode: json['statusCode'] as int?,
      error: json['error'] as String?,
      message: json['message'] as String?,
    );
  }

  Map<String, dynamic> toJson() => {
        'statusCode': statusCode,
        'error': error,
        'message': message,
      };
}

第 3 步：dio 错误拦截

lib/common/services/wp_http.dart

// 退出并重新登录
Future<void> _errorNoAuthLogout() async {
  // await UserService.to.logout();
  Get.toNamed(RouteNames.systemLogin);
}

@override
Future<void> onError(DioError err, ErrorInterceptorHandler handler) async {
  final exception = HttpException(err.message);
  switch (err.type) {
    case DioErrorType.response: // 服务端自定义错误体处理
      {
        final response = err.response;
        final errorMessage = ErrorMessageModel.fromJson(response?.data);
        switch (errorMessage.statusCode) {
          case 401:
            _errorNoAuthLogout();
            break;
          case 404:
            break;
          case 500:
            break;
          case 502:
            break;
          default:
            break;
        }
        Loading.error(errorMessage.message);
      }
      break;
    case DioErrorType.other:
      break;
    case DioErrorType.cancel:
      break;
    case DioErrorType.connectTimeout:
      break;
    default:
      break;
  }
  err.error = exception;
  handler.next(err);
}