当安装android sdk工具时，会产生以下错误:
java.lang.NoClassDefFoundError: javax / xml /绑定/注释/ XmlSchema
为什么会发生这种情况，如何解决?
调试输出:
$ java --version
java 9
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
$ brew cask install android-sdk
==> Caveats
We will install android-sdk-tools, platform-tools, and build-tools for you.
You can control android sdk packages via the sdkmanager command.
You may want to add to your profile:
'export ANDROID_SDK_ROOT=/usr/local/share/android-sdk'
This operation may take up to 10 minutes depending on your internet connection.
Please, be patient.
==> Satisfying dependencies
==> Downloading https://dl.google.com/android/repository/sdk-tools-darwin-3859397.zip
Already downloaded: /Users/tomasnovella/Library/Caches/Homebrew/Cask/android-sdk--3859397,26.0.1.zip
==> Verifying checksum for Cask android-sdk
==> Installing Cask android-sdk
==> Exception in thread "main"
==> java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
==> at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
==> at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
==> at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
==> at com.android.sdklib.tool.SdkManagerCli.main(SdkManagerCli.java:117)
==> at com.android.sdklib.tool.SdkManagerCli.main(SdkManagerCli.java:93)
==> Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
==> at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
==> at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
==> at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
==> ... 5 more
Error: Command failed to execute!
==> Failed command:
/usr/local/Caskroom/android-sdk/3859397,26.0.1/tools/bin/sdkmanager tools platform-tools build-tools;26.0.1
==> Standard Output of failed command:
==> Standard Error of failed command:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
at com.android.sdklib.tool.SdkManagerCli.main(SdkManagerCli.java:117)
我的Java版本是15.0.1。适用于Mac操作系统。
这就是我解决问题的方法。
下载zip: jaf- 31_1 .zip从:https://download.oracle.com/otn-pub/java/jaf/1.1.1/jaf-1_1_1.zip?AuthParam=1609860571_68ca6f30491c76e81970a3849504fb6a
从https://download.oracle.com/otn-pub/java/jaf/1.1.1/jaf-1_1_1.zip?AuthParam=1609860571_68ca6f30491c76e81970a3849504fb6a下载了zip: jaxb-ri-2.3.1.zip
解压缩到一个文件夹:~/jars/。导出的类路径如下
export
CLASSPATH=~/jars/FastInfoset.jar:~/jars/activation.jar:~/jars/codemodel.jar:~/jars/dtd-parser.jar:~/jars/istack-commons-runtime.jar:~/jars/istack-commons-tools.jar:~/jars/jaf-1.1.1:~/jars/jaf-1_1_1.zip:~/jars/javax.activation-api.jar:~/jars/jaxb-api.jar:~/jars/jaxb-jxc.jar:~/jars/jaxb-ri:~/jars/jaxb-ri-2.3.1.zip:~/jars/jaxb-runtime.jar:~/jars/jaxb-xjc.jar:~/jars/relaxng-datatype.jar:~/jars/rngom.jar:~/jars/stax-ex.jar:~/jars/txw2.jar:~/jars/xsom.jar
cd ~/Library/Android/sdk/tools/bin/sdkmanager修改CLASSPATH如下所示
类路径=$CLASSPATH：$APP...
保存文件后重新执行命令。
Linux用户(我使用的是Debian发行版，Kali)
以下是我的解决方法。
如果您还没有jdk-8，您可以在oracle的网站上获得它
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
我得到了jdk-8u191-linux-x64.tar.gz
步骤1 -安装Java
在一个合适的位置移动并打开它，像这样
$ mv jdk-8u191-linux-x64.tar.gz /suitablelocation/
$ tar -xzvf /suitablelocation/jdk-8u191-linux-x64.tar.gz
您应该得到一个解压缩的文件夹，如jdk1.8.0_191
您可以随后删除tarball以节省空间
步骤2 -设置默认java位置的替代方案
$ update-alternatives --install /usr/bin/java java /suitablelocation/jdk1.8.0_191/bin/java 1
$ update-alternatives --install /usr/bin/javac javac /suitablelocation/jdk1.8.0_191/bin/javac 1
步骤3 -选择您的默认选项
$ update-alternatives --set java /suitablelocation/jdk1.8.0_191/bin/java
$ update-alternatives --set javac /suitablelocation/jdk1.8.0_191/bin/javac
步骤4 -确认默认java版本
$ java -version
笔记
In the original article here: https://forums.kali.org/showthread.php?41-Installing-Java-on-Kali-Linux,
the default plugin for mozilla was also set. I assume we don't really need the plugins as we're
simply trying to develop for android.
As in @spassvogel's answer, you should also place a @repositories.cfg file in your ~/.android directory
as this is needed to update the tools repo lists
Moving some things around may require root authority. Use sudo wisely.
For sdkmanager usage, see official guide: https://developer.android.com/studio/command-line/sdkmanager
在我的情况下，我需要JDK 8(试图在ubuntu下使用AVD和SDK管理器在Qt)和11的不同工具。不能删除版本11。
“JAVA_OPTS”解决方案没有做任何事情。我真的不喜欢导出JAVA_HOME，因为它可能迫使您从同一个shell(如Qt)启动调用这些utils的任何工具，或者迫使您将其永久化，这是不方便的。
所以对我来说，解决办法很简单。在~/Android/tools/bin/sdkmanager和~/Android/tools/bin/avdmanager的第二行添加如下内容:
JAVA_HOME=“/usr/lib/jvm/java-8-openjdk-amd64”
(或rev 8 jdk的任何路径)。
因此，这些命令行工具以独立模式工作，它们也可以在其他工具(如Qt)调用时工作，而jdk 11仍然是其他工具的系统默认值。没有必要混合lib等…
唯一的缺点是，对这些命令行工具的任何更新都将删除这些修改，您必须重新输入这些修改。
