RabbitMQ入门-队列

先建工程

下一步，输入坐标

下一步，输入工程名

先看一下最终目录

修改pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>com.example.demo</groupId>
    <artifactId>rebbitmq-hello</artifactId>
    <version>1.0-SNAPSHOT</version>
 
    <dependencies>
        <dependency>
            <groupId>com.rabbitmq</groupId>
            <artifactId>amqp-client</artifactId>
            <version>5.1.2</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-simple -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.25</version>
        </dependency>
 
    </dependencies>
 
</project>

Send类：

package com.example.demo;
 
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
 
import java.io.IOException;
import java.util.concurrent.TimeoutException;
 
public class Send {
 
    private static final String QUEUE_NAME = "hello";
 
    public static void main(String[] args) throws IOException, TimeoutException {
        ConnectionFactory factory = new ConnectionFactory();    // 连接工厂
        factory.setHost("localhost");
        Connection connection = factory.newConnection();        // 获取连接
        Channel channel = connection.createChannel();
 
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);    // 声明队列，只有他不存在的时候创建
        String msg = "Hello World!";
        channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
        System.out.println("Sending:" + msg);
        channel.close();
        connection.close();
 
    }
 
}

Receive类：

package com.example.demo;
 
import com.rabbitmq.client.*;
 
import java.io.IOException;
import java.util.concurrent.TimeoutException;
 
public class Receive {
 
    private static final String QUEUE_NAME = "hello";
 
    public static void main(String[] args) throws IOException, TimeoutException {
        ConnectionFactory factory = new ConnectionFactory();    // 连接工厂
        factory.setHost("localhost");
        Connection connection = factory.newConnection();        // 获取连接
        Channel channel = connection.createChannel();
 
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);    // 声明队列，只有他不存在的时候创建
 
        Consumer consumer = new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                String recv = new String(body, "UTF-8");
                System.out.println("Receive:" + recv);
            }
        };
 
        channel.basicConsume(QUEUE_NAME, true, consumer);
    }
}

先启动Send，查看控制台

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再启动Receive

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