RabbitMQ-01-使用Java进行简单消息发送与接收

前言

这里使用手动管理jar与使用Maven管理jar两种方式，分别演示消息的发送和接收。

手动管理jar实现消息发送与接收

添加jar

amqp-client-5.7.1.jar

slf4j-api-1.7.26.jar

slf4j-simple-1.7.26.jar
编写发布者Publisher

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

import java.nio.charset.StandardCharsets;

public class Publisher {

    private final static String QUEUE_NAME = "queue_hello";

    public static void main(String[] argv) throws Exception {

        ConnectionFactory factory = new ConnectionFactory();

        factory.setHost("localhost");

        factory.setPort(5672);

        factory.setUsername("guest");

        factory.setPassword("guest");

        try (Connection connection = factory.newConnection();

             Channel channel = connection.createChannel()) {

            channel.queueDeclare(QUEUE_NAME, false, false, false, null);

            String message = "Hello World!";

            // 使用默认交换机

            channel.basicPublish("", QUEUE_NAME, null, message.getBytes(StandardCharsets.UTF_8));

            System.out.println(" [x] Sent '" + message + "'");

        }

    }

}

编写接收者



import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

import com.rabbitmq.client.DeliverCallback;

public class Receiver {

    private final static String QUEUE_NAME = "queue_hello";

    public static void main(String[] args) throws Exception {

        ConnectionFactory connectionFactory = new ConnectionFactory();

        connectionFactory.setHost("localhost");

        connectionFactory.setPort(5672);

        connectionFactory.setUsername("guest");

        connectionFactory.setPassword("guest");

        Connection connection = connectionFactory.newConnection();

        Channel channel = connection.createChannel();

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

        DeliverCallback deliverCallback = (consumerTag, delivery) -> {

            String message = new String(delivery.getBody(), "UTF-8");

            System.out.println(" [x] Received '" + message + "'");

        };

        channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> { });

    }

}

使用Maven管理jar实现发送与接收

添加常用Maven依赖

<properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

</properties>

    <build>

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>2.3.2</version>

                <configuration>

                    <source>1.8</source>

                    <target>1.8</target>

                </configuration>

            </plugin>

        </plugins>

    </build>

添加MQ相关依赖

<dependencies>

        <dependency>

            <groupId>com.rabbitmq</groupId>

            <artifactId>amqp-client</artifactId>

            <version>5.1.2</version>

        </dependency>

</dependencies>

消息发送代码



import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

import java.io.IOException;

import java.nio.charset.StandardCharsets;

import java.util.concurrent.TimeoutException;

public class Publisher {

    private final static String QUEUE_NAME = "queue_hello";

    public static void main(String[] args) throws IOException, TimeoutException {

        ConnectionFactory factory = new ConnectionFactory();

        factory.setHost("localhost");

        factory.setPort(5672);

        factory.setUsername("guest");

        factory.setPassword("guest");

        try (Connection connection = factory.newConnection();

             Channel channel = connection.createChannel()) {

            channel.queueDeclare(QUEUE_NAME, false, false, false, null);

            String message = "Hello World";

            channel.basicPublish("", QUEUE_NAME, null, message.getBytes(StandardCharsets.UTF_8));

            System.out.println(" [x] Sent '" + message + "'");

        }

    }

}

消息接收代码

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

import com.rabbitmq.client.DeliverCallback;

import java.io.IOException;

import java.nio.charset.StandardCharsets;

import java.util.Queue;

import java.util.concurrent.TimeoutException;

public class Receiver {

    private final static String QUEUE_NAME = "queue_hello";

    public static void main(String[] args) throws IOException, TimeoutException {

        ConnectionFactory factory = new ConnectionFactory();

        factory.setHost("localhost");

        factory.setPort(5672);

        factory.setUsername("guest");

        factory.setPassword("guest");

        Connection connection = factory.newConnection();

        Channel channel = connection.createChannel();

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        System.out.println("正在等待消息...");

        DeliverCallback deliverCallback = (consumerTag, delivery) -> {

            String message = new String(delivery.getBody(), StandardCharsets.UTF_8);

            System.out.println("接收到消息：" + message);

        };

        channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> {});

    }

}

演示结果

参考文档

官方文档： https://www.rabbitmq.com/tutorials/tutorial-one-java.html

巴特西

RabbitMQ-01-使用Java进行简单消息发送与接收

前言

手动管理jar实现消息发送与接收

使用Maven管理jar实现发送与接收

演示结果

参考文档

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