通过 Mule ESB CE 连接 Ejabbered

Posted 2023-02-24

【中文标题】通过 Mule ESB CE 连接 Ejabbered

【英文标题】：Connect Ejabbered via Mule ESB CE

【发布时间】：2013-04-11 02:59:35

【问题描述】：

我尝试将 Ejabberd 服务器放在 Mule ESB 社区版的后面，这意味着所有发往 Ejabberd 服务器的消息都必须先到 ESB。

我在文档中使用了xmpp连接器，如下xml配置：

<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns="http://www.mulesoft.org/schema/mule/core"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:spring="http://www.springframework.org/schema/beans"
  xmlns:xmpp="http://www.mulesoft.org/schema/mule/xmpp"
  xmlns:stdio="http://www.mulesoft.org/schema/mule/stdio"
  xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
    http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/3.1/mule.xsd
    http://www.mulesoft.org/schema/mule/xmpp http://www.mulesoft.org/schema/mule/xmpp/3.1/mule-xmpp.xsd
    http://www.mulesoft.org/schema/mule/stdio http://www.mulesoft.org/schema/mule/stdio/3.1/mule-stdio.xsd">

    <xmpp:connector name="xmppConnector" host="192.168.1.132" port="5222" user="[e-mail]" password="password"/>

    <flow name="stdio2xmpp">
        <stdio:inbound-endpoint system="IN"/>
        <xmpp:outbound-endpoint type="CHAT" recipient="[e-mail]"/>
    </flow>

    <flow name="xmpp2stdio">
        <xmpp:inbound-endpoint type="CHAT" from="[e-mail]"/>
        <xmpp:xmpp-to-object-transformer/>
        <stdio:outbound-endpoint system="OUT"/>
    </flow>
</mule>

我确定用户名和密码是正确的，因为我可以使用 Pidgin 登录服务器。当我尝试在工作室中运行此流程时，它总是抛出“未连接到服务器”异常。

Exception in thread "main" org.mule.module.launcher.DeploymentStartException: IllegalStateException: Not connected to server. 
        at org.mule.module.launcher.application.DefaultMuleApplication.start(DefaultMuleApplication.java:174) 
        at org.mule.module.launcher.application.ApplicationWrapper.start(ApplicationWrapper.java:107) 
        at org.mule.module.launcher.DefaultMuleDeployer.deploy(DefaultMuleDeployer.java:47) 
        at org.mule.tooling.server.application.ApplicationDeployer.run(ApplicationDeployer.java:56) 
        at org.mule.tooling.server.application.ApplicationDeployer.main(ApplicationDeployer.java:88) 
        Caused by: org.mule.retry.RetryPolicyExhaustedException: Not connected to server. 
        at org.mule.retry.policies.AbstractPolicyTemplate.execute(AbstractPolicyTemplate.java:105) 
        at org.mule.transport.AbstractConnector.connect(AbstractConnector.java:1616) 
        at org.mule.transport.AbstractConnector.start(AbstractConnector.java:428) 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
        at java.lang.reflect.Method.invoke(Unknown Source) 
        at org.mule.lifecycle.phases.DefaultLifecyclePhase.applyLifecycle(DefaultLifecyclePhase.java:225) 
        at org.mule.lifecycle.RegistryLifecycleManager$RegistryLifecycleCallback.onTransition(RegistryLifecycleManager.java:276) 
        at org.mule.lifecycle.RegistryLifecycleManager.invokePhase(RegistryLifecycleManager.java:155) 
        at org.mule.lifecycle.RegistryLifecycleManager.fireLifecycle(RegistryLifecycleManager.java:126) 
        at org.mule.registry.AbstractRegistryBroker.fireLifecycle(AbstractRegistryBroker.java:80) 
        at org.mule.registry.MuleRegistryHelper.fireLifecycle(MuleRegistryHelper.java:120) 
        at org.mule.lifecycle.MuleContextLifecycleManager$MuleContextLifecycleCallback.onTransition(MuleContextLifecycleManager.java:94) 
        at org.mule.lifecycle.MuleContextLifecycleManager$MuleContextLifecycleCallback.onTransition(MuleContextLifecycleManager.java:90) 
        at org.mule.lifecycle.MuleContextLifecycleManager.invokePhase(MuleContextLifecycleManager.java:72) 
        at org.mule.lifecycle.MuleContextLifecycleManager.fireLifecycle(MuleContextLifecycleManager.java:64) 
        at org.mule.DefaultMuleContext.start(DefaultMuleContext.java:250) 
        at org.mule.module.launcher.application.DefaultMuleApplication.start(DefaultMuleApplication.java:151) 
        ... 4 more 
        Caused by: java.lang.IllegalStateException: Not connected to server. 
        at org.jivesoftware.smack.XMPPConnection.addPacketListener(XMPPConnection.java:747) 
        at org.jivesoftware.smackx.ServiceDiscoveryManager.init(ServiceDiscoveryManager.java:270) 
        at org.jivesoftware.smackx.ServiceDiscoveryManager.(ServiceDiscoveryManager.java:80) 
        at org.jivesoftware.smackx.ServiceDiscoveryManager$1.connectionCreated(ServiceDiscoveryManager.java:66) 
        at org.jivesoftware.smack.XMPPConnection.initConnection(XMPPConnection.java:957) 
        at org.jivesoftware.smack.XMPPConnection.connectUsingConfiguration(XMPPConnection.java:904) 
        at org.jivesoftware.smack.XMPPConnection.connect(XMPPConnection.java:1415) 
        at org.mule.transport.xmpp.XmppConnector.connectToJabberServer(XmppConnector.java:137) 
        at org.mule.transport.xmpp.XmppConnector.doConnect(XmppConnector.java:84) 
        at org.mule.transport.AbstractConnector$5.doWork(AbstractConnector.java:1556) 
        at org.mule.retry.policies.AbstractPolicyTemplate.execute(AbstractPolicyTemplate.java:67) 
        ... 22 more 

有人对这个问题有想法吗？谢谢。

【参考方案1】：

mule 它建立在 Smack 之上，在建立连接时可能会遇到问题。

您能否验证 xmpp 服务器是否已启动？一旦你知道它继续调试 Smack。 Smack connection init 只捕获可能抛出的异常子集。 例如。它会忽略 NPE 并声称该连接正常。 它也不是线程安全的，所以原型只有一个到 xmpp 服务器的连接。

【讨论】：

我确定服务器已启动。好的，我会尝试在 mule esb 中调试 Smack。