Flutter Doctor--Android-Licenses：线程“main”java.lang.NoClassDefoundError中的异常

Question

我正在尝试安装flutter，但它不让我接受android许可。我得到以下错误：

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

我已经卸载了我当前版本的Java和清洁安装Java 8从这里。

这是flutter doctor返回的内容：

[✓] 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

Answer 1

从Android SDK管理器安装Android SDK命令行工具为我完成了这项工作。

1. 打开Android Studio
2. 工具>SDK管理器
3. 从左侧选择“外观与行为”>“系统设置”>“Android SDK
4. 从顶部菜单中选择SDK工具
5. 选中Android SDK命令行工具，然后单击“应用”。