线程 "Thread-2" java.lang.VerifyError 中的 Spark 服务异常

Question

我正在使用以下堆栈跟踪调查以下 java.lang.VerifyError.Exception：

Exception in thread "Thread-2" java.lang.VerifyError: class org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection overrides final method toString.()Ljava/lang/String;
    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.access0(Unknown Source)
    at java.net.URLClassLoader.run(Unknown Source)
    at java.net.URLClassLoader.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$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.<init>(WebSocketUpgradeFilter.java:136)
    at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.<init>(WebSocketUpgradeFilter.java:131)
    at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.configureContext(WebSocketUpgradeFilter.java:71)
    at spark.embeddedserver.jetty.websocket.WebSocketServletContextHandlerFactory.create(WebSocketServletContextHandlerFactory.java:50)
    at spark.embeddedserver.jetty.EmbeddedJettyServer.ignite(EmbeddedJettyServer.java:123)
    at spark.Service.lambda$init(Service.java:549)
    at java.lang.Thread.run(Unknown Source)

依赖关系

<!-- https://mvnrepository.com/artifact/org.eclipse.jetty.websocket/websocket-server -->
    <dependency>
        <groupId>org.eclipse.jetty.websocket</groupId>
        <artifactId>websocket-server</artifactId>
        <version>9.4.2.v20170220</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.eclipse.jetty/jetty-server -->
    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-server</artifactId>
        <version>9.4.2.v20170220</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.sparkjava/spark-core -->
    <dependency>
        <groupId>com.sparkjava</groupId>
        <artifactId>spark-core</artifactId>
        <version>2.5.5</version>
    </dependency>
    <dependency>
        <groupId>com.sparkjava</groupId>
        <artifactId>spark-debug-tools</artifactId>
        <version>0.5</version>
    </dependency>
    <dependency>
        <groupId>com.sparkjava</groupId>
        <artifactId>spark-template-velocity</artifactId>
        <version>2.3</version>
    </dependency>

我尝试将相同版本的 jett-server 版本与 spark 一起使用，但得到了相同的结果。任何关于在哪里查看的想法都会有所帮助。

Answer 1

您有混合版本的 Jetty 库。

处理您的 websocket 代码的库比您的服务器旧。

运行 $ mvn dependency:tree 你会看到混合版本的来源。

线程 "Thread-2" java.lang.VerifyError 中的 Spark 服务异常

Spark Service Exception in thread "Thread-2" java.lang.VerifyError

java

jetty

apache-spark