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社区首页 >问答首页 >错误状态:意外诊断:应为标识符。[严重]测试/widget_test.dart上的json_serializable:json_serializable

问错误状态:意外诊断:应为标识符。[严重]测试/widget_test.dart上的json_serializable:json_serializable
EN

Stack Overflow用户
提问于 2020-09-20 04:52:23
回答 1查看 973关注 0票数 4

Json serilizable不工作，我如何解决这个问题我不知道这个错误。我使用flutter build_runner：^1.7.2 json_serializable：^3.4.1分析器：^0.39.17 json_annotation：^3.0.1没有一个文件正在创建json

Json serilizable不工作，我如何解决这个问题我不知道这个错误。我使用flutter build_runner：^1.7.2 json_serializable：^3.4.1分析器：^0.39.17 json_annotation：^3.0.1没有一个文件正在创建json

代码语言：javascript
运行
复制
 import 'package:dance/models/tutorials-model/video-data.dart';
 import 'package:json_annotation/json_annotation.dart';
    
part 'metadata.g.dart';

@JsonSerializable()
class MetaData {
  final String category;
  final String categoryId;
  final List<VideoData> data;

  MetaData(this.category, this.categoryId, this.data);

  factory MetaData.fromJson(Map<String, dynamic> json) => _$MetaDataFromJson(json);
  Map<String, dynamic> toJson() => _$MetaDataToJson(this);
}

------------------------terminal------------------------

flutter pub run build_runner watch

[INFO] Running build...
[INFO] Generating SDK summary...
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[SEVERE] json_serializable:json_serializable on test/widget_test.dart:

Bad state: Unexpected diagnostics:
C:\Users\Admin\Desktop\flutter-dart\flutter\bin\cache\dart-sdk\lib\core\uri.dart:3259:39 - Expected an identifier.
[INFO] 2.3s elapsed, 1/17 actions completed.
[INFO] 3.4s elapsed, 1/17 actions completed.
[INFO] 4.4s elapsed, 1/17 actions completed.
[INFO] 5.4s elapsed, 1/17 actions completed.
[INFO] 6.4s elapsed, 1/17 actions completed.
[INFO] 7.4s elapsed, 1/17 actions completed.
[INFO] 8.4s elapsed, 1/17 actions completed.
[INFO] 9.4s elapsed, 1/17 actions completed.
[INFO] 10.5s elapsed, 1/17 actions completed.
[INFO] 11.5s elapsed, 1/17 actions completed.
[INFO] 12.5s elapsed, 1/17 actions completed.
[INFO] 13.5s elapsed, 1/17 actions completed.
[INFO] 14.5s elapsed, 1/17 actions completed.
[INFO] 15.5s elapsed, 1/17 actions completed.
[WARNING] No actions completed for 15.0s, waiting on:
  - json_serializable:json_serializable on lib/constants/constants.dart
  - json_serializable:json_serializable on lib/constants/key_provider.dart
  - json_serializable:json_serializable on lib/constants/routes_name.dart
  - json_serializable:json_serializable on lib/constants/url_provider.dart
  - json_serializable:json_serializable on lib/extension/string_extension.dart
  .. and 11 more
flutter
dart
jsonserializer
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2020-09-23 15:10:22

我遇到了一个类似的冻结问题。它可以通过指定包来解决。

代码语言：javascript
运行
复制
dependencies:
  analyzer: ^0.39.14 <- This

dev_dependencies:
  build_runner: ^1.10.0 <- This

重建前的清理

代码语言：javascript
运行
复制
# delete pubspec.lock
$ rm -rf pubspec.lock

# clean
$ flutter clean

请参阅https://github.com/flutter/flutter/issues/63096

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/63973296

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