How can be solved java.lang.NoClassDefFoundError:

问题:

I`ve changed jdk to a 9 version in my project and then collided with an error :

Error:java: java.lang.NoClassDefFoundError: javax/annotation/Generated

I try to solve it by the adding following to pom.com but it wasn`t work for me:

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-compiler-plugin</artifactId>
   <version>${version.compiler.plugin}</version>
   <configuration>
       <!-- fork is needed so compiler args can be used -->
       <fork>true</fork>
       <compilerArgs>
           <arg>-J--add-modules</arg>
           <arg>-Jjava.annotations.common</arg>
       </compilerArgs>
   </configuration>
</plugin>

Does it have other way to solve?

回答1:

Add an artifact containing the classes you need to the classpath.

It appears (untested) that the javax.annotated API is what you need. See https://mvnrepository.com/artifact/javax.annotation/javax.annotation-api/1.3.1 for details. You can add the following dependency to your project as any other and it should be present:

<!-- https://mvnrepository.com/artifact/javax.annotation/javax.annotation-api -->
<dependency>
    <groupId>javax.annotation</groupId>
    <artifactId>javax.annotation-api</artifactId>
    <version>1.3.1</version>
</dependency>

Remember to remove the compiler arguments!