为什么我的Flutter应用程序不能运行？BUG！源单元“_BuildScript_”中阶段“语义分析”中的异常不支持的类文件主要版本60

Question

我试图弄明白，但我甚至找不到方法。请帮帮我。

当我尝试运行我的第一个颤振应用程序时，会发生以下情况：

FAILURE: Build failed with an exception.

* What went wrong:
Could not open settings generic class cache for settings file 'C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\settings.gradle' (C:\Users\Angel\.gradle\caches\6.7\scripts\1fnwrr8g4rohfp291nvlxj5qe).
> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 60

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan 
to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s
Running Gradle task 'assembleDebug'...                                  
Running Gradle task 'assembleDebug'... Done                         3.5s
Exception: Gradle task assembleDebug failed with exit code 1

我已经用物理设备和模拟器进行了尝试。我试着用“颤振清洁”。振作起来，医生，说一切都好。

如果有帮助的话，下面是运行“颤振跑-v”时的结果：

[ +119 ms] executing: [C:\src\flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +128 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[   +1 ms] 4d7946a68d26794349189cf21b3f68cc6fe61dcb
[   +2 ms] executing: [C:\src\flutter/] git tag --points-at 4d7946a68d26794349189cf21b3f68cc6fe61dcb
[ +107 ms] Exit code 0 from: git tag --points-at 4d7946a68d26794349189cf21b3f68cc6fe61dcb
[        ] 2.0.3
[  +85 ms] executing: [C:\src\flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[  +77 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[        ] origin/stable
[   +1 ms] executing: [C:\src\flutter/] git ls-remote --get-url origin
[  +79 ms] Exit code 0 from: git ls-remote --get-url origin
[   +2 ms] https://github.com/flutter/flutter.git
[ +129 ms] executing: [C:\src\flutter/] git rev-parse --abbrev-ref HEAD
[  +78 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] stable
[ +188 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +6 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[   +1 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.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +124 ms] executing: C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe devices -l
[  +82 ms] List of devices attached
           R9HN50CEZ7J            device product:a11qub model:SM_A115M device:a11q transport_id:4
[  +10 ms] C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe -s R9HN50CEZ7J shell getprop
[ +291 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[   +2 ms] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[  +14 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[   +1 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.
[   +1 ms] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +217 ms] Skipping pub get: version match.
[ +268 ms] Generating
C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java  
[ +129 ms] ro.hardware = qcom
[  +88 ms] Initializing file store
[  +22 ms] Skipping target: gen_localizations
[  +18 ms] complete
[  +20 ms] Launching lib\main.dart on SM A115M in debug mode...
[  +15 ms] C:\src\flutter\bin\cache\dart-sdk\bin\dart.exe --disable-dart-dev
C:\src\flutter\bin\cache\artifacts\engine\windows-x64\frontend_server.dart.snapshot --sdk-root
C:\src\flutter\bin\cache\artifacts\engine\common\flutter_patched_sdk/ --incremental --target=flutter --debugger-module-names   
--experimental-emit-debug-metadata --output-dill
C:\Users\Angel\AppData\Local\Temp\flutter_tools.b8ee7616\flutter_tool.23a43e65\app.dill --packages
C:\Users\Angel\Downloads\Codigo\Flutter\first_app\.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
[  +51 ms] executing: C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe -s R9HN50CEZ7J shell -x logcat -v time -t1
[  +42 ms] <- compile package:first_app/main.dart
[ +216 ms] --------- beginning of main
                    03-31 11:34:37.956 W/fb4a.ReqContexts(10384): continueFromDirect() replaced by create()
[  +21 ms] executing: C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe version
[ +154 ms] Android Debug Bridge version 1.0.41
                    Version 31.0.1-7187441
                    Installed as C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe
[  +53 ms] executing: C:\Users\Angel\AppData\Local\Android\sdk\platform-tools\adb.exe start-server
[ +135 ms] Building APK
[  +56 ms] Running Gradle task 'assembleDebug'...
[  +15 ms] Using gradle from C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\gradlew.bat.
[  +40 ms] C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\gradlew.bat mode: 33279 rwxrwxrwx.
[  +25 ms] executing: [C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android/]
C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\gradlew.bat -Pverbose=true -Ptarget-platform=android-arm
-Ptarget=C:\Users\Angel\Downloads\Codigo\Flutter\first_app\lib\main.dart -Ptrack-widget-creation=true
-Pfilesystem-scheme=org-dartlang-root assembleDebug
[+2941 ms] FAILURE: Build failed with an exception.
[ +137 ms] * What went wrong:
[  +14 ms] Could not open settings generic class cache for settings file
'C:\Users\Angel\Downloads\Codigo\Flutter\first_app\android\settings.gradle'
(C:\Users\Angel\.gradle\caches\6.7\scripts\1fnwrr8g4rohfp291nvlxj5qe).
[  +11 ms] > BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 60[  +25 ms] * Try:
[   +2 ms] Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run
with --scan to get full insights.
[  +19 ms] * Get more help at https://help.gradle.org
[   +4 ms] BUILD FAILED in 2s
[ +362 ms] Running Gradle task 'assembleDebug'... (completed in 3.6s)
[+11837 ms] Exception: Gradle task assembleDebug failed with exit code 1
[   +3 ms] "flutter run" took 17,569ms.
[   +8 ms] 
           #0      throwToolExit (package:flutter_tools/src/base/common.dart:10:3)
           #1      RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:644:9)
           <asynchronous suspension>
           #2      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:1157:12)
           <asynchronous suspension>
           #3      FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1009:27)      
           <asynchronous suspension>
           #4      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #5      AppContext.run (package:flutter_tools/src/base/context.dart:149:12)
           <asynchronous suspension>
           #6      CommandRunner.runCommand (package:args/command_runner.dart:197:13)
           <asynchronous suspension>
           #7      FlutterCommandRunner.runCommand.<anonymous closure>
           (package:flutter_tools/src/runner/flutter_command_runner.dart:278:9)
           <asynchronous suspension>
           #8      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #9      AppContext.run (package:flutter_tools/src/base/context.dart:149:12)
           <asynchronous suspension>
           #10     FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:234:5)        
           <asynchronous suspension>
           #11     run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:64:9)
           <asynchronous suspension>
           #12     run.<anonymous closure> (package:flutter_tools/runner.dart:62:12)
           <asynchronous suspension>
           #13     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #14     AppContext.run (package:flutter_tools/src/base/context.dart:149:12)
           <asynchronous suspension>
           #15     runInContext (package:flutter_tools/src/context_runner.dart:73:10)
           <asynchronous suspension>
           #16     main (package:flutter_tools/executable.dart:90:3)
           <asynchronous suspension>


[ +175 ms] ensureAnalyticsSent: 163ms
[   +2 ms] Running shutdown hooks
[   +1 ms] Shutdown hook priority 4
[+3035 ms] Shutdown hooks complete
[   +4 ms] exiting with code 1

求你了，我真的需要帮助。

Answer 1

我也有同样的问题。。

运行未来医生并确保您安装了适合我的android Studio。

Answer 2

我也面临这个问题，但不是降级JDK版本，而是更新distributionUrl和build tools版本，它对我有用

Answer 3

看到你的评论，我有个问题要问。我的JDK版本16降到了11，它正常工作了。