zl-q
90 lines
2.6 KiB
Dart
90 lines
2.6 KiB
Dart
import 'package:dio/dio.dart';
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abstract class ApiException implements Exception {
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final String message;
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final int? statusCode;
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const ApiException(this.message, {this.statusCode});
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@override
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String toString() => message;
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factory ApiException.fromDioError(Object error) {
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if (error is ApiException) return error;
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if (error is DioException) {
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final response = error.response;
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final statusCode = response?.statusCode;
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final data = response?.data;
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String detail;
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if (data is Map<String, dynamic>) {
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detail =
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(data['detail'] ?? data['message'] ?? data['error'])?.toString() ??
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'请求失败';
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} else {
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detail = _networkErrorMessage(error);
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}
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final localized = _localizeError(detail, statusCode);
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if (statusCode == 401) {
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return UnauthorizedException(localized);
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}
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if (statusCode == 422) {
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return ValidationException(
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localized,
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errors: data,
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statusCode: statusCode,
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);
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}
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return ServerException(localized, statusCode: statusCode);
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}
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return const ServerException('网络错误');
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}
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static String _localizeError(String detail, int? statusCode) {
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if (statusCode == 403) {
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return '没有权限执行此操作';
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}
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if (statusCode == 404) {
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return '请求的资源不存在';
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}
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if (statusCode == 429) {
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return '请求过于频繁，请稍后再试';
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}
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if (statusCode != null && statusCode >= 500) {
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return '服务器错误，请稍后再试';
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}
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return detail;
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}
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static String _networkErrorMessage(DioException error) {
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if (error.type == DioExceptionType.connectionTimeout ||
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error.type == DioExceptionType.sendTimeout ||
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error.type == DioExceptionType.receiveTimeout) {
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return '网络超时，请确认手机与服务端在同一网络后重试';
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}
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if (error.type == DioExceptionType.connectionError ||
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error.type == DioExceptionType.unknown) {
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return '无法连接服务器。请在 iPhone 设置中为本应用开启“无线数据（WLAN与蜂窝网络）”，并确认本地网络权限已开启。';
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}
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return '请求失败';
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}
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}
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class ServerException extends ApiException {
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const ServerException(super.message, {super.statusCode});
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}
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class UnauthorizedException extends ApiException {
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const UnauthorizedException([super.message = '请重新登录'])
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: super(statusCode: 401);
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}
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class ValidationException extends ApiException {
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final Map<String, dynamic>? errors;
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const ValidationException(super.message, {this.errors, super.statusCode});
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}
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