java grpc问题 – java.lang.NoClassDefFoundError：io/grpc/BindableService

huangapple
go评论124阅读模式
英文:

java grpc issue - java.lang.NoClassDefFoundError: io/grpc/BindableService

问题

这些是OpenShift部署过程中的日志：

开始使用 /opt/jboss/container/java/run/run-java.sh 启动 Java 应用程序...
INFO exec java -javaagent:/opt/jboss/container/jolokia/jolokia.jar=config=/opt/jboss/container/jolokia/etc/jolokia.properties -XX:+UseParallelOldGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=100m -XX:+ExitOnOutOfMemoryError -cp "." -jar /deployments/demo-0.0.1-SNAPSHOT.jar
OpenJDK 64 位 Server VM 警告：如果预计处理器数量将从一个增加到多个，则应使用 -XX:ParallelGCThreads=N 适当地配置并行 GC 线程数。
a
Exception in thread "main" java.lang.NoClassDefFoundError: io/grpc/BindableService
at com.example.demo.DemoApplication.main(DemoApplication.java:18)
Caused by: java.lang.ClassNotFoundException: io.grpc.BindableService
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
... 1 more

看起来我已经导入了所有所需的依赖项。我还发现一个人如何通过 Gradle 解决了这个问题：
https://stackoverflow.com/questions/42540531/bindableservice-issue-with-grpc-java
但不幸的是，我需要使用 Maven。

提前感谢您提供的所有信息。

英文:

That are logs from openshift deploying:

  1.     Starting the Java application using /opt/jboss/container/java/run/run-java.sh ...
  2. INFO exec  java -javaagent:/opt/jboss/container/jolokia/jolokia.jar=config=/opt/jboss/container/jolokia/etc/jolokia.properties -XX:+UseParallelOldGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=100m -XX:+ExitOnOutOfMemoryError -cp "." -jar /deployments/demo-0.0.1-SNAPSHOT.jar  
  3. OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
  4. a
  5. Exception in thread "main" java.lang.NoClassDefFoundError: io/grpc/BindableService
  6. 	at com.example.demo.DemoApplication.main(DemoApplication.java:18)
  7. Caused by: java.lang.ClassNotFoundException: io.grpc.BindableService
  8. 	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
  9. 	at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
  10. 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
  11. 	at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
  12. ... 1 more

It looks i have imported all needed dependencies. I also found out how one man fixed this issue with gradle:
https://stackoverflow.com/questions/42540531/bindableservice-issue-with-grpc-java
But unfortunatelly i need to have maven.

Thanks for all infos in advance

答案1

得分: 2

你的 grpc jars 可能没有捆绑在一起。您可以使用以下方法创建一个包含所有依赖的 fat jar：

  1. <build>
  2.    <plugins>
  3.       <plugin>
  4.          <groupId>org.apache.maven.plugins</groupId>
  5.          <artifactId>maven-assembly-plugin</artifactId>
  6.          <version>3.1.1</version>
  7.          <configuration>
  8.             <descriptorRefs>
  9.                <descriptorRef>jar-with-dependencies</descriptorRef>
  10.             </descriptorRefs>
  11.             <archive>
  12.                <manifest>
  13.                   <mainClass>完整的主类名</mainClass>
  14.                </manifest>
  15.             </archive>
  16.          </configuration>
  17.          <executions>
  18.             <execution>
  19.                <phase>package</phase>
  20.                <goals>
  21.                   <goal>single</goal>
  22.                </goals>
  23.             </execution>
  24.          </executions>
  25.       </plugin>
  26.    </plugins>
  27. </build>
英文:

Your grpc jars might not be bundled. You can create a fat jar using the following:

  1. &lt;build&gt;
  2.    &lt;plugins&gt;
  3.       &lt;plugin&gt;
  4.          &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
  5.          &lt;artifactId&gt;maven-assembly-plugin&lt;/artifactId&gt;
  6.          &lt;version&gt;3.1.1&lt;/version&gt;
  7.          &lt;configuration&gt;
  8.             &lt;descriptorRefs&gt;
  9.                &lt;descriptorRef&gt;jar-with-dependencies&lt;/descriptorRef&gt;
  10.             &lt;/descriptorRefs&gt;
  11.             &lt;archive&gt;
  12.                &lt;manifest&gt;
  13.                   &lt;mainClass&gt;fully qualified main class name&lt;/mainClass&gt;
  14.                &lt;/manifest&gt;
  15.             &lt;/archive&gt;
  16.          &lt;/configuration&gt;
  17.          &lt;executions&gt;
  18.             &lt;execution&gt;
  19.                &lt;phase&gt;package&lt;/phase&gt;
  20.                &lt;goals&gt;
  21.                   &lt;goal&gt;single&lt;/goal&gt;
  22.                &lt;/goals&gt;
  23.             &lt;/execution&gt;
  24.          &lt;/executions&gt;
  25.       &lt;/plugin&gt;
  26.    &lt;/plugins&gt;
  27. &lt;/build&gt;

答案2

得分: 2

  1.             <plugin>
  2.                 <groupId>org.apache.maven.plugins</groupId>
  3.                 <artifactId>maven-shade-plugin</artifactId>
  4.                 <version>3.2.4</version>
  5.                 <executions>
  6.                     <execution>
  7.                         <phase>package</phase>
  8.                         <goals>
  9.                             <goal>shade</goal>
  10.                         </goals>
  11.                         <configuration>
  12.                             <transformers>
  13.                                 <transformer
  14.                                         implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
  15.                                     <mainClass>你的项目的主类路径</mainClass>
  16.                                 </transformer>
  17.                             </transformers>
  18.                         </configuration>
  19.                     </execution>
  20.                 </executions>
  21.             </plugin>

将com.mafei.server.GRPCServer替换为你项目的主类路径。

英文:

change the plugins sections of your pom.xml file like below.

  1.             &lt;plugin&gt;
  2.                 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
  3.                 &lt;artifactId&gt;maven-shade-plugin&lt;/artifactId&gt;
  4.                 &lt;version&gt;3.2.4&lt;/version&gt;
  5.                 &lt;executions&gt;
  6.                     &lt;execution&gt;
  7.                         &lt;phase&gt;package&lt;/phase&gt;
  8.                         &lt;goals&gt;
  9.                             &lt;goal&gt;shade&lt;/goal&gt;
  10.                         &lt;/goals&gt;
  11.                         &lt;configuration&gt;
  12.                             &lt;transformers&gt;
  13.                                 &lt;transformer
  14.                                         implementation=&quot;org.apache.maven.plugins.shade.resource.ManifestResourceTransformer&quot;&gt;
  15.                                     &lt;mainClass&gt;com.mafei.server.GRPCServer&lt;/mainClass&gt;
  16.                                 &lt;/transformer&gt;
  17.                             &lt;/transformers&gt;
  18.                         &lt;/configuration&gt;
  19.                     &lt;/execution&gt;
  20.                 &lt;/executions&gt;
  21.             &lt;/plugin&gt;

replace com.mafei.server.GRPCServer with your main class of the project.

huangapple
  • 本文由 发表于 2020年3月15日 08:05:46
  • 转载请务必保留本文链接：https://go.coder-hub.com/60688528.html
  • dependencies
  • grpc
  • java
  • maven
  • shadow
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定