Flutter Doctor --android-licenses:线程"main"中的异常；java.lang.NoClassDefFoundError [英] Flutter Doctor --android-licenses : Exception in thread "main" java.lang.NoClassDefFoundError

问题描述

我正在尝试安装flutter，但不会让我接受android许可证.我收到以下错误:

  PS C:\ Users \ XXXX>扑医生--android-licenses线程"main"中的异常java.lang.NoClassDefFoundError:javax/xml/bind/annotation/XmlSchema位于com.android.repository.api.SchemaModule $ SchemaModuleVersion.< init>(SchemaModule.java:156)在com.android.repository.api.SchemaModule.< init>(SchemaModule.java:75)在com.android.sdklib.repository.AndroidSdkHandler中.< clinit>(AndroidSdkHandler.java:81)在com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)在com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)引起原因:java.lang.ClassNotFoundException:javax.xml.bind.annotation.XmlSchema在java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)在java.base/jdk.internal.loader.ClassLoaders $ AppClassLoader.loadClass(ClassLoaders.java:178)在java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)...另外5个 

我已经卸载了当前版本的Java，并从

I'm trying to install flutter but it won't let me accept the android license. I get the following error:

PS C:\Users\XXXX> flutter doctor --android-licenses
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
        at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
        at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
        at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        ... 5 more

I've already uninstalled my current version of Java and clean installed Java 8 from here.

This is what flutter doctor returns:

[✓] Flutter (Channel stable, 1.22.3, on Microsoft Windows [Version 10.0.18363.1139], locale en-IE)
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[!] Android Studio (version 4.1.0)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] VS Code (version 1.50.1)
[!] Connected device
    ! No devices available

解决方案

Installing Android SDK Command-line tools from Android SDK Manager did the job for me.

1. Open Android Studio
2. Tools > SDK Manager
3. From the left choose, Appearance & Behavior > System Settings > Android SDK
4. Select SDK Tools from the top menu
5. Check Android SDK Command-line tools and click 'apply'.

这篇关于Flutter Doctor --android-licenses:线程"main"中的异常；java.lang.NoClassDefFoundError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！