问题描述
使用Service Bus SDK编写消费端应用时，遇见了错误信息:
SDK版本
<dependency> <groupId>com.azure</groupId> <artifactId>azure-messaging-eventhubs</artifactId> <version>5.4.0</version> </dependency> <dependency> <groupId>com.azure</groupId> <artifactId>azure-messaging-eventhubs-checkpointstore-blob</artifactId> <version>1.14.0</version> </dependency> <dependency> <groupId>com.azure</groupId> <artifactId>azure-identity</artifactId> <version>1.2.2</version> <scope>compile</scope> </dependency>
错误信息
Exception in thread "main" java.lang.NoClassDefFoundError: com/azure/core/client/traits/TokenCredentialTrait at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at com.example.App.main(App.java:86) Caused by: java.lang.ClassNotFoundException: com.azure.core.client.traits.TokenCredentialTrait at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 13 more
以上问题，如何解答呢？
问题解答
这个错误其实非常明显，就是缺少 azure.core 依赖。 在pom.xml文件中，添加上如下依赖即可解决问题。
<dependency>
<groupId>com.azure</groupId>
<artifactId>azure-core</artifactId>
<version>1.26.0</version>
</dependency>
参考资料
TokenCredentialTrait not found even when used ： https://stackoverflow.com/questions/71617941/tokencredentialtrait-not-found-even-when-used
