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我正在處理一個包含多個JDBC數據源和JTA的項目。我使用Maven作爲構建工具，並且我想在開發期間使用Jetty插件（6.1.20）來運行應用程序。Atomikos + Jetty在Maven構建環境中 - Classloader問題？
我正在嘗試將Jetty配置爲使用Atomikos作爲事務管理器。我遵循Atomikos documentation from Jetty，但Jetty啓動失敗，看起來像是類加載器問題。
這裏是我的配置的相關位。
runtime範圍依賴於我的pom.xml：
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions-jta</artifactId>
<version>3.5.7</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions-jdbc</artifactId>
<version>3.5.7</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
<scope>runtime</scope>
</dependency>
我jetty-env.xml位於/WEB-INF（由碼頭自動查找）：
<New id="userTxImpl" class="com.atomikos.icatch.jta.UserTransactionImp" />
<New id="tx" class="org.mortbay.jetty.plus.naming.Transaction">
<Arg>
<Ref id="userTxImpl" />
</Arg>
</New>
的tx在最後的實例是失敗位，如果我離開它，Jetty啓動正常（但當然不通過JNDI公開UserTransaction）。
堆棧跟蹤：
2009-09-02 18:42:18.910::WARN: Config error at <New id="tx" class="org.mortbay.jetty.plus.naming.Transaction"><Arg>
<Ref id="userTxImpl"/>
</Arg></New>
2009-09-02 18:42:18.910::WARN: Failed startup of context [email protected]{/administrator,C:\workspace\administrator\src\main\webapp}
java.lang.IllegalStateException: No Constructor: <New id="tx" class="org.mortbay.jetty.plus.naming.Transaction"><Arg>
<Ref id="userTxImpl"/>
</Arg></New> on [email protected]{/administrator,C:\workspace\administrator\src\main\webapp}
at org.mortbay.xml.XmlConfiguration.newObj(XmlConfiguration.java:631)
at org.mortbay.xml.XmlConfiguration.configure(XmlConfiguration.java:256)
at org.mortbay.xml.XmlConfiguration.configure(XmlConfiguration.java:190)
at org.mortbay.jetty.plus.webapp.EnvConfiguration.configureWebApp(EnvConfiguration.java:130)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1247)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:124)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:441)
at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383)
at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:579)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:498)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmentForProject(DefaultLifecycleExecutor.java:265)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:191)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:149)
at org.apache.maven.DefaultMaven.execute_aroundBody0(DefaultMaven.java:223)
at org.apache.maven.DefaultMaven.execute_aroundBody1$advice(DefaultMaven.java:304)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:1)
at org.apache.maven.embedder.MavenEmbedder.execute_aroundBody2(MavenEmbedder.java:904)
at org.apache.maven.embedder.MavenEmbedder.execute_aroundBody3$advice(MavenEmbedder.java:304)
at org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:1)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:176)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:408)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:351)
at org.codehaus.classworlds.Launcher.main(Launcher.java:31)
這看起來像一個類加載器的問題，因爲org.mortbay.jetty.plus.naming.Transaction得到了一個構造函數採取javax.transaction.UserTransaction，和com.atomikos.icatch.jta.UserTransactionImp實現javax.transaction.UserTransaction，但碼頭抱怨它沒有一個適當的構造函數來使用。
我很明顯在這裏失去了一些東西，但它是什麼？
謝謝！
jboss-j2ee與它自己的UserTransaction一起間接依賴，是問題所在。非常感謝！我以爲我瘋了。 – Henning 2009-09-02 16:56:16