通過Spring集成入站適配器隨機接收JMS消息失敗

Question

我是這個Spring Integration和JMS的新手，並且開始使用它。 在這里，我想通過activemq創建純jms消息，並通過spring inbound adapter（消息驅動）接收它。

以下是我的春季配置文件

    <?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" />

這是我的測試課

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 --------------");
    }

}

}

但是事情是我不能保證交貨。 有時程序無法接收到消息，並且某些tomes成功，並帶有一些警告，例如

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

無法刷新目標“ queue：// MSG_QUEUE”的JMS連接-在5000毫秒內重試。 原因：無法連接到代理URL：tcp：// localhost：61616。 原因：java.net.ConnectException：連接被拒絕：connect

在成功之前，這種情況發生了幾次。

你們對此有任何想法嗎？

感謝您的幫助。

謝謝，凱斯

Answer 1

這僅表示偵聽器容器啟動時代理未運行。 使用tcp：// URL時，應在創建此上下文之前在其自身的上下文（或另一個JVM）中運行代理。

Answer 2

我已經在STS中測試了這些代碼，可以正常工作。

在您這邊的唯一問題是，首先啟動消息代理（例如ActiveMQ），然后運行您的項目，您可以獲得所需的輸出。

謝謝。