针对Web的Flutter构建-“无法编译应用程序”

ipakzgxi 于 2022-12-30 发布在 Flutter

关注(0)|答案(4)|浏览(202)

我已经为我的项目启用了Web支持，在运行flutter run -d chrome之后，我得到了以下错误：

Launching lib/main.dart on Chrome in debug mode...
Syncing files to device Chrome...                                                                                                                                                                    
Compiler message:                                  
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapiauth2.dart:26:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  GoogleAuth.fakeConstructor$();                                                                                   
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapiauth2.dart:216:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  SigninOptionsBuilder.fakeConstructor$();                                                                         
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:351:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpRequestPromise.fakeConstructor$();                                                                           
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:378:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpRequest.fakeConstructor$() : super.fakeConstructor$();                                                       
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:402:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpBatch.fakeConstructor$();                                                                                    
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:440:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  RpcRequest.fakeConstructor$();                                                                                   
  ^                                                                                                                
Syncing files to device Chrome...                               19,442ms (!)                                       
Failed to compile application.
Tals-Macbook:matkonit talbarda$ flutter run -d chrome
Launching lib/main.dart on Chrome in debug mode...
Syncing files to device Chrome...                                                                                                                                                                    
Compiler message:                                  
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapiauth2.dart:26:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  GoogleAuth.fakeConstructor$();                                                                                   
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapiauth2.dart:216:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  SigninOptionsBuilder.fakeConstructor$();                                                                         
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:351:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpRequestPromise.fakeConstructor$();                                                                           
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:378:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpRequest.fakeConstructor$() : super.fakeConstructor$();                                                       
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:402:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  HttpBatch.fakeConstructor$();                                                                                    
  ^                                                                                                                
../../flutter/.pub-cache/hosted/pub.dartlang.org/google_sign_in_web-0.8.3+1/lib/src/generated/gapi.dart:440:3: Error: JS interop classes do not support non-external constructors.
Try annotating with `external`.                                                                                    
  RpcRequest.fakeConstructor$();                                                                                   
  ^                                                                                                                
Syncing files to device Chrome...                               17,899ms (!)                                       
Failed to compile application.

我该怎么补救呢？

flutter

来源：https://stackoverflow.com/questions/60911568/flutter-build-for-web-failed-to-compile-application

4条答案

按热度按时间

4nkexdtk1#

我注意到这个问题在google_sign_in_web 0.9.0中得到了修复，所以请在pubspec.yaml文件中更改版本。

google_sign_in_web: ^0.9.1

2020年4月20日更新：如果您对google_sign_in有依赖关系，那么请在pubspec.yaml文件中更改该版本。

google_sign_in: 4.4.3

之前：然而，当你像我一样，对google_sign_in有依赖关系时，你就有更多的东西需要更改...如果你将google_sign_in_web更改为0.9.0，并将google_sign_in的版本更改为4.4.1，那么检索软件包将失败：

Because ${your_project_name} depends on google_sign_in 4.4.1 which depends on google_sign_in_web ^0.8.2, google_sign_in_web ^0.8.2 is required.
So, because ${your_project_name} depends on google_sign_in_web ^0.9.0, version solving failed.
pub get failed (1; So, because  ${your_project_name} depends on google_sign_in_web ^0.9.0, version solving failed.)

在这种情况下，你必须等待google_sign_in升级（我创建了pull request https://github.com/flutter/plugins/pull/2647），或者暂时像我一样：
1)从https://github.com/flutter/plugins克隆flutter插件

mkdir /src
cd /src
git clone https://github.com/flutter/plugins.git

2)更改/src/插件/插件/软件包/google_sign_in/pubspec.yaml中的文件pubspec.yaml

google_sign_in_web: ^0.9.0

3)更改项目中的依赖项以指向更改后的google_sign_in版本，即

google_sign_in:
  path: ../../flutter/plugins/packages/google_sign_in/google_sign_in
google_sign_in_web: ^0.9.0

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yduiuuwa2#

换到beta频道。

flutter channel beta

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gstyhher3#

由于某些原因，新版本的flutter不再支持这种格式的依赖项：folding_cell: "^0.1.2"，而是检查pubspec.yaml，并将该格式任何依赖项更改为：我已经用folding_cell作为一个例子。这为我解决了这个问题，希望它能帮助到别人。

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ctehm74n4#

使用dart pub outdated来识别过时的包依赖项，并获取有关如何更新它们的建议。依赖项管理的最佳实践包括使用最新的稳定包版本，以便您可以获得最新的错误修复和改进。
打开终端和路径到你的应用程序文件夹和运行flutter发布过时列出所有过时的软件包.

cmd：flutter发布过期
并升级所有过时的packakges到最新或resolvable版本.并运行从终端flutter酒吧升级.更新过时的软件包到最新的一个.然后运行你的应用程序.
more info:https://dart.dev/tools/pub/cmd/pub-outdated

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针对Web的Flutter构建-“无法编译应用程序”

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