ionic-framework - 安卓目标 : not installed (cordova requirements)

Question

我是 ionic 的新手，我尝试构建我的应用程序，但失败了，所以我运行了“cordova requirements”，但出现了这个错误:

$ cordova requirements
Android Studio project detected

Requirements check results for android:
Java JDK: installed
Android SDK: installed true
Android target: not installed
cmd: Command failed with exit code 1 Error output:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
        at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
        at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
        at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
        at com.android.sdklib.tool.AvdManagerCli.run(AvdManagerCli.java:213)
        at com.android.sdklib.tool.AvdManagerCli.main(AvdManagerCli.java:200)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
        ... 5 more
Gradle: installed D:\Program Files\Android\Android Studio\gradle\gradle-4.1\bin\gradle

有人知道如何解决这个问题吗？

谢谢!

Answer 1

这应该可以简单地解决它!如此处所述 https://stackoverflow.com/a/50097394/2642351尝试安装低于 9 的 JDK 版本，例如 JDK 8 左右。并在环境变量中更新您的 JAVA_HOME 路径