Я работаю над проектом флаттера. Он отлично работает на эмуляторе android, но когда я хочу запустить его как веб-приложение, я сталкиваюсь с этой проблемой:
Launching lib\main.dart on Chrome in debug mode...
Finished with error: Failed to bind web development server:
SocketException: Failed to create server socket (OS Error: Failed to start accept), address =
localhost, port = 5403
Я попытался запустить другой простой проект, но столкнулся с той же ошибкой. Я делал каждый шаг в соответствии с официальной документацией. Это мой доктор по трепетанию:
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel beta, v1.17.0, on Microsoft Windows [Version 10.0.18363.778], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc2)
[√] Chrome - develop for the web
[√] Android Studio (version 3.6)
[√] IntelliJ IDEA Ultimate Edition (version 2019.3)
[√] VS Code (version 1.44.2)
[√] Connected device (3 available)
• No issues found!
Я искал inte rnet, но нет хорошего решения этой проблемы.
Не могли бы вы мне помочь?
Заранее спасибо.
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add)
),
);
}
}
Я запускаю flutter -v -d chrome run в команде windows от имени администратора, и это ответ:
[ +32 ms] executing: [C:\android\flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +129 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +2 ms] d3ed9ec945f8869f0e136c357d0c2a6be2b60c98
[ ] executing: [C:\android\flutter/] git describe --match *.*.* --first-parent --long --tags
[ +123 ms] Exit code 0 from: git describe --match *.*.* --first-parent --long --tags
[ ] 1.17.0-dev.3.1-0-gd3ed9ec94
[ +16 ms] executing: [C:\android\flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[ +96 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[ ] origin/beta
[ ] executing: [C:\android\flutter/] git ls-remote --get-url origin
[ +87 ms] Exit code 0 from: git ls-remote --get-url origin
[ ] https://github.com/flutter/flutter.git
[ +254 ms] executing: [C:\android\flutter/] git rev-parse --abbrev-ref HEAD
[ +97 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[ +2 ms] beta
[ +58 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[ +7 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +30 ms] executing: C:\android\sdk\platform-tools\adb.exe devices -l
[ +90 ms] List of devices attached
emulator-5554 device product:sdk_google_phone_x86 model:Android_SDK_built_for_x86 device:generic_x86
transport_id:2
[ +20 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ +8 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ +2 ms] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +348 ms] Generating C:\AndroidStudioProjects\Samsung
mobile\flutter_app\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java
[ +170 ms] Launching lib\main.dart on Chrome in debug mode...
[ +73 ms] "flutter run" took 948ms.
Failed to bind web development server:
SocketException: Failed to create server socket (OS Error: Failed to start accept), address = localhost, port = 13632
#0 throwToolExit (package:flutter_tools/src/base/common.dart:14:3)
#1 WebAssetServer.start (package:flutter_tools/src/build_runner/devfs_web.dart:221:7)
<asynchronous suspension>
#2 WebDevFS.create (package:flutter_tools/src/build_runner/devfs_web.dart:605:43)
#3 _ResidentWebRunner.run.<anonymous closure>
(package:flutter_tools/src/build_runner/resident_web_runner.dart:426:44)
<asynchronous suspension>
#4 _ResidentWebRunner.run.<anonymous closure> (package:flutter_tools/src/build_runner/resident_web_runner.dart)
#5 asyncGuard.<anonymous closure> (package:flutter_tools/src/base/async_guard.dart:111:32)
#6 _rootRun (dart:async/zone.dart:1184:13)
#7 _CustomZone.run (dart:async/zone.dart:1077:19)
#8 _runZoned (dart:async/zone.dart:1619:10)
#9 runZonedGuarded (dart:async/zone.dart:1608:12)
#10 runZoned (dart:async/zone.dart:1536:12)
#11 asyncGuard (package:flutter_tools/src/base/async_guard.dart:109:3)
#12 _ResidentWebRunner.run (package:flutter_tools/src/build_runner/resident_web_runner.dart:407:20)
<asynchronous suspension>
#13 RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:564:37)
<asynchronous suspension>
#14 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:722:18)
#15 _rootRunUnary (dart:async/zone.dart:1192:38)
#16 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#17 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#18 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#19 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#20 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#21 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:36:15)
#22 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:298:13)
#23 RunCommand.usageValues (package:flutter_tools/src/commands/run.dart)
#24 _rootRunUnary (dart:async/zone.dart:1192:38)
#25 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#26 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#27 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#28 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#29 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#30 Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:556:7)
#31 _rootRun (dart:async/zone.dart:1184:13)
#32 _CustomZone.run (dart:async/zone.dart:1077:19)
#33 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
#34 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1019:23)
#35 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#36 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#37 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#38 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)