java-8 - 在 Jboss EAP 6.4 上通过 JNDI 进行远程 EJB 查找

Question

我正在尝试从这里运行 ejb-remote 示例:Jboss eap quickstart

当我在同一台计算机上运行服务器和客户端时，我没有发现任何问题。但是，如果客户端是在与服务器不同的机器上执行的，则会出现问题。

我假设 jboss 团队提供的示例应该是开箱即用的。我还阅读了关于https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI的文章以及各种在线博客。如果我遗漏了任何明显的内容，请告诉我。现在正在尝试让远程客户端工作几天。 :(

环境: 服务器部署在 Jboss EAP 6.4 上。 JDK/JAVA 版本 8。

堆栈跟踪:

java.io.EOFException: XNIO000812: Connection closed unexpectedly
    at org.xnio.http.HttpUpgrade$HttpUpgradeState$UpgradeResultListener.handleEvent(HttpUpgrade.java:416)
    at org.xnio.http.HttpUpgrade$HttpUpgradeState.flushUpgradeChannel(HttpUpgrade.java:369)
    at org.xnio.http.HttpUpgrade$HttpUpgradeState.access$900(HttpUpgrade.java:165)
    at org.xnio.http.HttpUpgrade$HttpUpgradeState$ConnectionOpenListener.handleEvent(HttpUpgrade.java:340)
    at org.xnio.http.HttpUpgrade$HttpUpgradeState$ConnectionOpenListener.handleEvent(HttpUpgrade.java:320)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.nio.WorkerThread$ConnectHandle.handleReady(WorkerThread.java:324)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:559)
    at ...asynchronous invocation...(Unknown Source)
    at org.jboss.remoting3.EndpointImpl.doConnect(EndpointImpl.java:294)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:416)
    at org.jboss.ejb.client.remoting.EndpointPool$PooledEndpoint.connect(EndpointPool.java:192)
    at org.jboss.ejb.client.remoting.NetworkUtil.connect(NetworkUtil.java:153)
    at org.jboss.ejb.client.remoting.NetworkUtil.connect(NetworkUtil.java:133)
    at org.jboss.ejb.client.remoting.ConnectionPool.getConnection(ConnectionPool.java:78)
    at org.jboss.ejb.client.remoting.RemotingConnectionManager.getConnection(RemotingConnectionManager.java:51)
    at org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector.setupEJBReceivers(ConfigBasedEJBClientContextSelector.java:161)
    at org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector.getCurrent(ConfigBasedEJBClientContextSelector.java:118)
    at org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector.getCurrent(ConfigBasedEJBClientContextSelector.java:47)
    at org.jboss.ejb.client.EJBClientContext.getCurrent(EJBClientContext.java:281)
    at org.jboss.ejb.client.EJBClientContext.requireCurrent(EJBClientContext.java:291)
    at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:178)
    at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:146)
    at com.sun.proxy.$Proxy0.add(Unknown Source)
    at org.jboss.as.quickstarts.ejb.remote.client.RemoteEJBClient.invokeStatelessBean(RemoteEJBClient.java:57)
    at org.jboss.as.quickstarts.ejb.remote.client.RemoteEJBClient.main(RemoteEJBClient.java:38)

Exception in thread "main" java.lang.IllegalStateException: EJBCLIENT000025: No EJB receiver available for handling [appName:, moduleName:jboss-ejb-remote-server-side, distinctName:] combination for invocation context org.jboss.ejb.client.EJBClientInvocationContext@6eebc39e
    at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:798)
    at org.jboss.ejb.client.ReceiverInterceptor.handleInvocation(ReceiverInterceptor.java:128)
    at org.jboss.ejb.client.EJBClientInvocationContext.sendRequest(EJBClientInvocationContext.java:186)
    at org.jboss.ejb.client.EJBInvocationHandler.sendRequestWithPossibleRetries(EJBInvocationHandler.java:255)
    at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:200)
    at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:183)
    at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:146)
    at com.sun.proxy.$Proxy0.add(Unknown Source)
    at org.jboss.as.quickstarts.ejb.remote.client.RemoteEJBClient.invokeStatelessBean(RemoteEJBClient.java:57)
    at org.jboss.as.quickstarts.ejb.remote.client.RemoteEJBClient.main(RemoteEJBClient.java:38)
 

04/29 更新:

JBOSS 启动日志片段:

9:42:56,600 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-4) JBAS015400: Bound mail session [java:jboss/mail/Default]
09:42:56,978 INFO  [org.apache.coyote.http11.Http11Protocol] (MSC service thread 1-3) JBWEB003001: Coyote HTTP/1.1 initializing on : **http-/0.0.0.0:8080**
09:42:57,010 INFO  [org.apache.coyote.http11.Http11Protocol] (MSC service thread 1-3) JBWEB003000: Coyote HTTP/1.1 starting on: **http-/0.0.0.0:8080**
09:42:57,083 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-3) JBAS010400: Bound data source [java:jboss/datasources/ExampleDS]
09:42:57,117 INFO  [org.jboss.as.server.deployment.scanner] (MSC service thread 1-3) JBAS015012: Started FileSystemDeploymentService for directory /opt/deployments/jboss/jboss-eap-6.4/standalone/deployments
09:42:57,124 INFO  [org.jboss.as.remoting] (MSC service thread 1-8) JBAS017100: Listening on 127.0.0.1:9999
09:42:57,124 INFO  [org.jboss.as.remoting] (MSC service thread 1-1) JBAS017100:Listening on **0.0.0.0:4447**

Netstat 输出:

tcp 0 0 0.0.0.0:8080 0.0.0.0:* 监听 2917/java

tcp 0 0 0.0.0.0:4447 0.0.0.0:* 监听 2917/java

Answer 1

很少有问题导致了这个问题。

1. 端口应该是4447，jboss上的项目中是8080。

2. 应该通过 JBOSS_HOME/bin/add-user.sh 添加用户并将其添加到 jboss-ejb-client.properties 如下。

   remote.connection.default.username=user2 Remote.connection.default.password=password12(

3. 使用正确版本的客户端。就我而言，我使用的是 6.4 版本的服务器和 7.0.X 版本的客户端。