用java连接RabbitMQ

pom.xml

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
    <dependency>
      <groupId>com.rabbitmq</groupId>
      <artifactId>amqp-client</artifactId>
      <version>5.6.0</version>
    </dependency>

      <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-api</artifactId>
          <version>1.7.25</version>
      </dependency>

      <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
          <version>1.7.25</version>
          <scope>test</scope>
      </dependency>

      <!-- https://mvnrepository.com/artifact/log4j/log4j -->
      <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>1.2.17</version>
      </dependency>

  </dependencies>

获取连接

package utils;

import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import org.apache.log4j.Logger;

public class ConnectionUtil {

    private static Logger logger = Logger.getLogger(ConnectionUtil.class);

    public static Connection getConnection() {
        try {
            Connection connection = null;
            //定义一个连接工厂
            ConnectionFactory factory = new ConnectionFactory();
            //设置服务端地址（域名地址/ip）
            factory.setHost("192.168.131.128");
            //设置服务器端口号
            factory.setPort(5672);
            //设置虚拟主机(相当于数据库中的库)
            factory.setVirtualHost("/");
            //设置用户名
            factory.setUsername("guest");
            //设置密码
            factory.setPassword("guest");
            connection = factory.newConnection();
            return connection;
        } catch (Exception e) {
            return null;
        }
    }
}

生产者

package message;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import utils.ConnectionUtil;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class Send {
    //队列名称
    private static final String QUEUE_NAME = "test_simple_queue";

    public static void main(String[] args) {
        try {
            //获取连接
            Connection connection = ConnectionUtil.getConnection();
            //从连接中获取一个通道
            Channel channel = connection.createChannel();
            //声明队列
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            String message = "This is simple queue";
            //发送消息
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes("utf-8"));
            System.out.println("[send]：" + message);
            channel.close();
            connection.close();
        } catch (IOException | TimeoutException e) {
            e.printStackTrace();
        }
    }
}

消费者

package message;

import com.rabbitmq.client.*;
import utils.ConnectionUtil;

import java.io.IOException;

public class Receive {
    //队列名称
    private static final String QUEUE_NAME = "test_simple_queue";

    public static void main(String[] args) {
        try {
            //获取连接
            Connection connection = ConnectionUtil.getConnection();
            //从连接中获取一个通道
            Channel channel = connection.createChannel();
            //声明队列
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            //定义消费者
            DefaultConsumer consumer = new DefaultConsumer(channel) {
                //当消息到达时执行回调方法
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                                           byte[] body) throws IOException {
                    String message = new String(body, "utf-8");
                    System.out.println("[Receive]：" + message);
                }
            };
            //监听队列
            channel.basicConsume(QUEUE_NAME, true, consumer);
        } catch (IOException | ShutdownSignalException | ConsumerCancelledException e) {
            e.printStackTrace();
        }
    }
}