我正在关注这个blog https://blogs.oracle.com/arungupta/entry/websockets_and_java_ee_7在 glasshfish 中运行示例 Websocket 应用程序。部署失败并出现以下错误。但是提到的类文件在 pom.xml 中可用，并且它也列在依赖项中。能否请你帮忙？
Error occurred during deployment: Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: java.lang.NoClassDefFoundError: org/glassfish/websocket/spi/Endpoint. Please see server.log for more details.
The module has not been deployed.
See the server log for details.
at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:210)
at org.netbeans.modules.maven.j2ee.ExecutionChecker.performDeploy(ExecutionChecker.java:178)
at org.netbeans.modules.maven.j2ee.ExecutionChecker.executionResult(ExecutionChecker.java:130)
at org.netbeans.modules.maven.execute.MavenCommandLineExecutor.run(MavenCommandLineExecutor.java:212)
at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
解决了。 glassfish 的 module 文件夹和 WEB-INF\lib 文件夹中不应该有相同的 jar。
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