目录
基本概念
代码及演示
就是官方的这个模型:
p为生产者不经过交换机,直接把数据传给消息队列,c为consumer用于消费。
这种结构在本科生的时候,经常自己写,现在用RabbitMQ来试试
发送端点击运行:
消费者那边会接收到数据:
关键的源码如下:
Maven依赖:
com.rabbitmq
amqp-client
5.4.3
org.slf4j
slf4j-api
1.7.25
org.slf4j
slf4j-log4j12
1.7.5
log4j
log4j
1.2.17
junit
junit
4.12
生产者:
package rabbitmq.simple;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import rabbitmq.util.ConnectionUtils;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
public class Send {
private static final String QUEUE_NAME = "test_simple_queue";
public static void main(String[] args) throws IOException, TimeoutException {
Connection connection = ConnectionUtils.getConnect();
Channel channel = connection.createChannel();
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
String msg = "Hello World";
channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
System.out.println("---send msg: " + msg);
channel.close();
connection.close();
}
}
消费者:
package rabbitmq.simple;
import com.rabbitmq.client.*;
import rabbitmq.util.ConnectionUtils;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
public class Recv {
private static final String QUEUE_NAME = "test_simple_queue";
public static void main(String[] args) throws IOException, TimeoutException {
Connection connection = ConnectionUtils.getConnect();
Channel channel = connection.createChannel();
channel.queueDeclare(QUEUE_NAME, false, false, false, null); //声明,没有就会创建
DefaultConsumer consumer = new DefaultConsumer(channel) {
@Override
public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
String msg = new String(body, "utf-8");
System.out.println("recv: " + msg);
}
};
//监听
channel.basicConsume(QUEUE_NAME, true, consumer);
}
}
这里有一点要注意的:
basicConsume里的第二个参数是true,的意思是给消息队列一个应答,说明,我已经拿出来了!他是一个ack
程序打包下载地址:
https://github.com/fengfanchen/Java/tree/master/SimpleRabbitMQ