【java】RabbitMQ简单队列
一个生产者P发送消息到队列Q,一个消费者C接收新建一个maven项目,进行如下操作:1配置Maven<dependency><groupId>com.rabbitmq</groupId><artifactId>amqp-client</artifactId><version>5.9.0</version></
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一个生产者P发送消息到队列Q,一个消费者C接收
新建一个maven项目,进行如下操作:
1配置Maven
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>5.9.0</version>
</dependency>
2封装Connection
package com.rabbitmqdemo.Utils;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
public class MQConnectionUtils{
public static Connection newConnection() throws IOException, TimeoutException {
ConnectionFactory connectionfactory = new ConnectionFactory();
// 2.设置服务器地址
connectionfactory.setHost("127.0.0.1");
// 3.设置协议端口号
connectionfactory.setPort(5672);
// 4.设置vhost
connectionfactory.setVirtualHost("/rabbitmqstudy");
// 5.设置用户名称
connectionfactory.setUsername("schwimmer");
// 6.设置用户密码
connectionfactory.setPassword("123456");
// 7.创建新的连接
Connection newConnection = connectionfactory.newConnection();
return newConnection;
}
}
3.生产者代码如下
package com.rabbitmqdemo.Producer;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmqdemo.Utils.MQConnectionUtils;
public class Producer {
// 队列名称
private static final String QUEUE_NAME = "study01";
public static void main(String[] args) throws IOException, TimeoutException {
// 1.创建一个新的连接
Connection connection = MQConnectionUtils.newConnection();
// 2.创建通道
Channel channel = connection.createChannel();
// 3.创建一个队列
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
// 4.创建msg
String msg = "博主长得非常帅,比金城武还帅!";
// 5.生产者发送消息者
channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
// 关闭通道和连接
channel.close();
connection.close();
}
}
运行以上代码可以看到rabbit上增加了一条消息:
查看消息内容如下:
4.消费者代码如下
package com.rabbitmqdemo.consumer;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import javax.swing.DefaultBoundedRangeModel;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;
import com.rabbitmq.client.AMQP.BasicProperties;
import com.rabbitmqdemo.Utils.MQConnectionUtils;
public class Consumer {
// 队列名称
private static final String QUEUE_NAME = "study01";
public static void main(String[] args) throws IOException, TimeoutException {
// System.out.println("消费者启动....01");
// 1.创建一个新的连接
Connection connection = MQConnectionUtils.newConnection();
// 2.创建通道
final Channel channel = connection.createChannel();
// 3.消费者关联队列
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
channel.basicQos(1);
DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
// 监听获取消息
@Override
public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
throws IOException {
String msg = new String(body, "UTF-8");
System.out.println("消费者获取生产者消息:" + msg);
}
};
// 4.设置应答模式 如果为true情况下 表示为自动应答模式 false 表示为手动应答
channel.basicConsume(QUEUE_NAME, true, defaultConsumer);
// 关闭通道和连接
// channel.close();
// connection.close();
}
}
运行消费者代码消费,内容如下:
注意:RabbitMQ的消费者集群的消费模式为均摊消费
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