通过SpringIntegration入站适配器接收JMS消息会随机失败

Question

我是这个Spring集成和JMS的新手，我开始使用它。在这里，我想通过activemq创建普通的jms消息，并通过spring inbound适配器(消息驱动)接收它。

以下是我的spring配置文件

    <?xml version="1.0" encoding="UTF-8"?>
    <beans:beans xmlns="http://www.springframework.org/schema/integration"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:stream="http://www.springframework.org/schema/integration/stream"
xmlns:jms="http://www.springframework.org/schema/integration/jms"
xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/integration
        http://www.springframework.org/schema/integration/spring-integration.xsd
        http://www.springframework.org/schema/integration/stream
        http://www.springframework.org/schema/integration/stream/spring-integration-stream.xsd>
        http://www.springframework.org/schema/integration/jms
        http://www.springframework.org/schema/integration/jms/spring-integration-jms.xsd">

<!-- jms beans -->
<beans:bean id="jms.msgQueue" class="org.apache.activemq.command.ActiveMQQueue">
    <beans:constructor-arg value="MSG_QUEUE" />
</beans:bean>

<beans:bean name="jms.connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
    <beans:property name="brokerURL" value="tcp://localhost:61616" />
</beans:bean>


 <!-- spring integration beans -->
<channel id="channels.jms.allMessages">
    <queue capacity="1000" />
</channel>

<jms:message-driven-channel-adapter id="adapters.jms.msgAdapter"
            connection-factory="jms.connectionFactory"
            destination="jms.msgQueue"
             channel="channels.jms.allMessages" />

这是我的测试课。

package com.bst.jms;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.Message;
import org.springframework.integration.core.PollableChannel;

public class TestActiveMQ {

public static void main(String[] args){

    try{
        AbstractApplicationContext context = new ClassPathXmlApplicationContext("app-context.xml");
        ConnectionFactory connectionFactory = (ConnectionFactory)context.getBean("jms.connectionFactory");
        Destination destination = (Destination)context.getBean("jms.msgQueue");
        PollableChannel msgChannel = (PollableChannel) context.getBean("channels.jms.allMessages", PollableChannel.class );

        Connection connection = connectionFactory.createConnection();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);


        MessageProducer producer = session.createProducer(destination);

         TextMessage textMessage = session.createTextMessage();
         textMessage.setText("Message from JMS");
         producer.send(textMessage);


         System.out.println("--------------- Message Sending ------------------------");

         Message<?> received = msgChannel.receive();
         String payload = (String) received.getPayload();

         System.out.println("Receving message = " + payload);
    }catch(JMSException ex){
        System.out.println("----------- JMS Exception --------------");
    }

}

}

但问题是我不能保证交货。有些时候程序不能接收消息，有些时候它成功了，但有一些警告，如

Setup of JMS message listener invoker failed for destination 'queue://MSG_QUEUE' -   trying to recover. Cause: Connection reset
Could not refresh JMS Connection for destination 'queue://MSG_QUEUE' - retrying in 5000 ms. Cause: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused: connect

无法刷新目标“queue://MSG_QUEUE”的JMS连接，将在5000毫秒后重试，原因:无法连接到代理URL: tcp://localhost:61616。原因:Java . net . connect异常:连接被拒绝:连接

这在成功之前会发生几次。

你们对此有什么想法吗？

感谢您的帮助。

谢谢，凯斯

Answer 1

我已经在我的STS中测试了这些代码，运行良好。

您这边唯一的问题是，首先启动MessageBroker（比如ActiveMQ），然后运行项目，您可以获得所需的输出。

谢谢。

Answer 2

这只意味着侦听器容器启动时代理没有运行。使用tcp://URL时，在创建此上下文之前，应在其自己的上下文（或另一个JVM）中运行代理。