运行报错

来源：4-3 Windows电脑搭建Flutter开发环境教程以及常见问题汇总

saw希望

2025-01-07

flutter version 3.27.1

jdk 17

报错

[ +173 ms] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

[ +3 ms] Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

[ +212 ms] 错误: 找不到或无法加载主类 Dfile.encoding=utf-8

[ +1 ms] 原因: java.lang.ClassNotFoundException: Dfile.encoding=utf-8

具体info 如下

PS F:\project_mix\fluter_v2\navers> flutter run -v

[ +458 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.

[ ] Artifact Instance of 'LegacyCanvasKitRemover' is not required, skipping update.

[ +4 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.

[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.

[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.

[ ] 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.

[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.

[ +108 ms] executing: E:\android_sdk\platform-tools\adb.exe devices -l

[ +344 ms] List of devices attached

emulator-5554 device product:MI 9 model:MI_9 device:star2qltechn transport_id:1

[ +13 ms] E:\android_sdk\platform-tools\adb.exe -s emulator-5554 shell getprop

[ +261 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.

[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.

[ +16 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.

[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.

[ ] 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.

[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.

[ +296 ms] Skipping pub get: version match.

[ +219 ms] Generating F:\project_mix\fluter_v2\navers\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java

[ +105 ms] ro.hardware = qcom

[ +159 ms] No packages with native assets. Skipping native assets compilation.

[ +5 ms] Initializing file store

[ +17 ms] Skipping target: gen_localizations

[ +7 ms] gen_dart_plugin_registrant: Starting due to {InvalidatedReasonKind.inputChanged: The following inputs have updated contents: F:\project_mix\fluter_v2\navers\.dart_tool\package_config_subset}

[ +297 ms] gen_dart_plugin_registrant: Complete

[ +1 ms] Skipping target: _composite

[ +2 ms] complete

[ +8 ms] Launching lib\main.dart on MI 9 in debug mode...

[ +5 ms] F:\flutter_folder\flutter\bin\cache\dart-sdk\bin\dartaotruntime.exe F:\flutter_folder\flutter\bin\cache\dart-sdk\bin\snapshots\frontend_server_aot.dart.snapshot --sdk-root F:\flutter_folder\flutter\bin\cache\artifacts\engine\common\flutter_patched_sdk/

--incremental --target=flutter --experimental-emit-debug-metadata --output-dill C:\Users\ADMINI~1\AppData\Local\Temp\flutter_tools.2528eb50\flutter_tool.b0386b9e\app.dill --packages F:\project_mix\fluter_v2\navers\.dart_tool\package_config.json

-Ddart.vm.profile=false -Ddart.vm.product=false --enable-asserts --track-widget-creation --filesystem-scheme org-dartlang-root --initialize-from-dill build\cache.dill.track.dill --verbosity=error --enable-experiment=alternative-invalidation-strategy

[ +35 ms] executing: E:\android_sdk\platform-tools\adb.exe -s emulator-5554 shell -x logcat -v time -t 1

[ +191 ms] <- compile package:navers/main.dart

[ +189 ms] --------- beginning of main

01-07 11:12:18.503 I/Finsky ( 3039): [166] pls.h(7): Already at the latest configurations for experiment package com.google.android.finsky.regular.

[ +111 ms] executing: E:\android_sdk\platform-tools\adb.exe version

[ +191 ms] Android Debug Bridge version 1.0.41

Version 35.0.1-11580240

Installed as E:\android_sdk\platform-tools\adb.exe

Running on Windows 10.0.19042

[ +2 ms] executing: E:\android_sdk\platform-tools\adb.exe start-server

[ +180 ms] Building APK

[ +16 ms] executing: F:\android_studio_el\jbr\bin\java -version

[ +264 ms] Exit code 0 from: F:\android_studio_el\jbr\bin\java -version

[ +1 ms] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

openjdk version "11.0.15" 2022-04-19

OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-9505619)

OpenJDK 64-Bit Server VM (build 11.0.15+0-b2043.56-9505619, mixed mode)

[ +3 ms] executing: F:\JetBrainsToolbox\Android Studio\jbr\bin\java -version

[ +334 ms] Exit code 0 from: F:\JetBrainsToolbox\Android Studio\jbr\bin\java -version

[ +1 ms] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

openjdk version "17.0.11" 2024-04-16

OpenJDK Runtime Environment (build 17.0.11+0--11852314)

OpenJDK 64-Bit Server VM (build 17.0.11+0--11852314, mixed mode)

[ +7 ms] executing: F:\JetBrainsToolbox\Android Studio\jbr\bin\java -version

[ +352 ms] Exit code 0 from: F:\JetBrainsToolbox\Android Studio\jbr\bin\java -version

[ ] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

openjdk version "17.0.11" 2024-04-16

OpenJDK Runtime Environment (build 17.0.11+0--11852314)

OpenJDK 64-Bit Server VM (build 17.0.11+0--11852314, mixed mode)

[ +18 ms] executing: F:\JetBrainsToolbox\Android Studio\jbr\bin\java --version

[ +257 ms] Exit code 0 from: F:\JetBrainsToolbox\Android Studio\jbr\bin\java --version

[ ] openjdk 17.0.11 2024-04-16

OpenJDK Runtime Environment (build 17.0.11+0--11852314)

OpenJDK 64-Bit Server VM (build 17.0.11+0--11852314, mixed mode)

[ ] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

[ +18 ms] CMake project not found, skipping support Android 15 16k page size migration.

[ +26 ms] Using gradle from F:\project_mix\fluter_v2\navers\android\gradlew.bat.

[ +2 ms] Running Gradle task 'assembleDebug'...

[ +6 ms] executing: [F:\project_mix\fluter_v2\navers\android/] F:\project_mix\fluter_v2\navers\android\gradlew.bat --full-stacktrace --info -Pverbose=true -Ptarget-platform=android-x64 -Ptarget=F:\project_mix\fluter_v2\navers\lib\main.dart

-Pbase-application-name=android.app.Application -Pdart-obfuscation=false -Ptrack-widget-creation=true -Ptree-shake-icons=false -Pfilesystem-scheme=org-dartlang-root assembleDebug

[ +173 ms] Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=utf-8

[ +3 ms] Picked up _JAVA_OPTIONS: -Dfile.encoding=utf-8

[ +212 ms] 错误: 找不到或无法加载主类 Dfile.encoding=utf-8

[ +1 ms] 原因: java.lang.ClassNotFoundException: Dfile.encoding=utf-8

[ +24 ms] Running Gradle task 'assembleDebug'... (completed in 405ms)

[+8399 ms] Error: Gradle task assembleDebug failed with exit code 1

[ +1 ms] "flutter run" took 12,980ms.

[ +26 ms]

#0 throwToolExit (package:flutter_tools/src/base/common.dart:10:3)

#1 RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:860:9)

#2 FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1450:27)

#3 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:19)

#4 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#5 FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:421:9)

#6 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:19)

#7 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:364:5)

#8 run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:131:9)

#9 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:19)

#10 main (package:flutter_tools/executable.dart:94:3)

[ +89 ms] ensureAnalyticsSent: 86ms

[ ] Running 2 shutdown hooks

[ +5 ms] Shutdown hooks complete

[ +7 ms] exiting with code 1

写回答

1回答

CrazyCodeBoy

2025-01-08

从日志和错误信息来看，问题的主要原因是环境变量 JAVA_TOOL_OPTIONS 和 _JAVA_OPTIONS 的设置有误，具体表现为 Java 在运行时将 -Dfile.encoding=utf-8 误解为主类，而不是正确的 JVM 参数。

解决步骤：

1. 检查并移除错误的环境变量

你需要检查系统的环境变量设置，并移除 JAVA_TOOL_OPTIONS 和 _JAVA_OPTIONS 中的错误配置。

Windows 系统

1. 打开 "系统属性" > "高级" > "环境变量"。

2. 在 "系统变量" 和 "用户变量" 中找到 JAVA_TOOL_OPTIONS 和 _JAVA_OPTIONS。

3. 检查它们的值是否包含 -Dfile.encoding=utf-8。如果存在，将其删除或修改为正确的格式。

临时解决方案如果不方便修改系统环境变量，可以在运行命令时清除这两个变量：

set JAVA_TOOL_OPTIONS=
set _JAVA_OPTIONS=
flutter run

2. 设置正确的文件编码（可选）

如果你需要强制指定文件编码为 UTF-8，可以使用以下命令运行：

set JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF-8
set _JAVA_OPTIONS=-Dfile.encoding=UTF-8
flutter run

3. 检查 Java 版本

根据日志，你的项目使用的是 JDK 11 和 JDK 17。需要确保：

系统使用的是 Flutter 支持的 JDK 版本（推荐 JDK 11 或 JDK 17）。

如果使用多个 JDK，确保 JAVA_HOME 指向正确的 JDK 版本。

运行以下命令检查 JAVA_HOME 是否正确：

echo %JAVA_HOME%

确保路径指向你期望的 JDK。

4. 清理 Flutter 和 Gradle 缓存

清理缓存并重新构建项目可能会解决一些潜在问题：

flutter clean
flutter pub get

删除 .gradle 文件夹：

cd android
gradlew clean

然后重新运行项目：

flutter run

5. 如果问题依旧存在

尝试通过以下步骤进一步定位问题：

1. 检查 gradle.properties 文件，确保没有错误的 JVM 配置。

2. 强制同步 Gradle 配置：

cd android
./gradlew assembleDebug --refresh-dependencies

3. 确保 Flutter 和 Android Studio 是最新版本，并正确配置了 Android SDK 和 NDK。

完成以上步骤后，问题应该能解决。如果仍然有问题，可以提供最新的错误日志以进一步排查。

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