weblogic JMS 初体验P2P模式-优快云博客

本文详细介绍了如何在Java应用程序中使用WebLogic JNDI查询来查找ConnectionFactory，并通过该连接工厂建立连接、创建会话、发送和接收JMS消息。包括了设置环境变量、查询ConnectionFactory、建立连接、创建会话、发送消息及接收消息的完整流程。

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程序运行前，需要编译wlfullclient.jar

主要步骤为

1.通过JNDI查询ConnectionFactory

2.通过工厂建立连接connection

3.创建session

程序简单，直接代码

下面是P2P的生成者

package com.test;

import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public class JMSP2PSend {

public static void main(String[] args) {
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
System.setProperty(Context.PROVIDER_URL, "t3://localhost:7001");
QueueConnection connection = null;
QueueSession session = null;
Context ctx = null;

try {
ctx = new InitialContext();

//1.通过JNDI查询ConnectionFactory
QueueConnectionFactory factory = (QueueConnectionFactory) ctx.lookup("jms/connectionFactory");

//2.通过工厂建立连接connection
connection = factory.createQueueConnection();

//3.创建session
session = connection.createQueueSession(false,QueueSession.AUTO_ACKNOWLEDGE);

//4.创建Destination
Destination destination = (Destination) ctx.lookup("jms/fileQueue");

//5.创建MessageProducer（生产）或者MessageConsumer（消费）
MessageProducer mp = session.createProducer(destination);

//构造消息体
TextMessage tm = session.createTextMessage();
tm.setText("csdn tczxg");
tm.setStringProperty("user", "嘿嘿，JMS挺简单的。。。");

mp.send(tm);

} catch (NamingException ne) {
ne.printStackTrace();
} catch (JMSException jse) {
jse.printStackTrace();
} finally {
if (session != null)
try {
session.close();
} catch (JMSException e) {
}
if (connection != null)
try {
connection.close();
} catch (JMSException e) {
}
if (ctx != null)
try {
ctx.close();
} catch (NamingException e) {
}
}
}
}

下面是P2P jms 消费者代码

package com.test;

import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public class JMSP2PReciver {

/**
* @param args
*/
public static void main(String[] args) {
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
System.setProperty(Context.PROVIDER_URL, "t3://localhost:7001");
QueueConnection connection = null;
QueueSession session = null;
Context ctx = null;

try {
ctx = new InitialContext();

//1.通过JNDI查询ConnectionFactory
QueueConnectionFactory factory = (QueueConnectionFactory) ctx.lookup("jms/connectionFactory");

//2.通过工厂建立连接connection
connection = factory.createQueueConnection();

//3.创建session
session = connection.createQueueSession(false,QueueSession.AUTO_ACKNOWLEDGE);

//4.创建Destination
Destination destination = (Destination) ctx.lookup("jms/fileQueue");

//5.创建MessageProducer（生产）或者MessageConsumer（消费）
MessageConsumer mc = session.createConsumer(destination);
connection.start();

//构造消息体
Message message = mc.receive();
if(message instanceof TextMessage){
TextMessage tm = (TextMessage) message ;
String user = tm.getStringProperty("user");
System.out.println(tm.getText() + ", user : "+user);
}
connection.close();

} catch (NamingException ne) {
ne.printStackTrace();
} catch (JMSException jse) {
jse.printStackTrace();
} finally {
if (session != null)
try {
session.close();
} catch (JMSException e) {
}
if (ctx != null)
try {
ctx.close();
} catch (NamingException e) {
}
}
}

}