RabbitMQ快速⼊⻔
引入依赖
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>5.22.0</version>
</dependency>
编写生产者代码
具体步骤：
public static void main(String[] args) throws IOException, TimeoutException {
//1.建立连接
ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost(ip地址，填自己的);
connectionFactory.setPort(5672); //需提前开放端口号
connectionFactory.setUsername("admin");//账号
connectionFactory.setPassword("admin");//密码
connectionFactory.setVirtualHost("study");//虚拟主机
Connection connection = connectionFactory.newConnection();
//2.开启信道
Channel channel = connection.createChannel();
//3.声明交换机 使用内置的交换机
//4.声明队列
/**
* Queue.DeclareOk queueDeclare(String queue, boolean durable, boolean exclusive, boolean autoDelete,
* Map<String, Object> arguments) throws IOException;
*
* 参数说明：
* queue：队列名称
* durable：可持久化
* exclusive：是否独占
* autoDelete：是否自动删除
* arguments：额外参数
*/
channel.queueDeclare("hello",true,false,false,null);
//5.发消息
/**
* void basicPublish(String exchange, String routingKey, BasicProperties props, byte[] body) throws IOException;
*
* 参数声明：
* exchange：交换机名称，不写代表使用内置交换机
* routingKey：路由名称, routingKey = 队列名称 （使用内置交换机，routingKey与队列名称保持一致）
* props：属性配置
* body：消息
*/
for (int i = 0; i < 10; i++) {
String msg = "hello rabbitmq ~" + i;
channel.basicPublish("","hello",null,msg.getBytes());
}
System.out.println("消息发送成功~");
//6.资源释放
channel.close();
connection.close();
}
编写消费者代码
具体步骤：
public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
//1.建立连接
ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost(ip地址);
connectionFactory.setPort(5672);
connectionFactory.setUsername("admin");
connectionFactory.setPassword("admin");
connectionFactory.setVirtualHost("study");
Connection connection = connectionFactory.newConnection();
//2.创建Channel
Channel channel = connection.createChannel();
//3.声明队列（可以省略）
channel.queueDeclare("hello",true,false,false,null);
//4.消费消息
DefaultConsumer consumer = new DefaultConsumer(channel){
//从队列中收到消息，就会执行的方法
@Override
public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
System.out.println("接收到消息： " + new String(body));
}
};
/**
* String basicConsume(String queue, boolean autoAck, Consumer callback) throws IOException;
* 参数说明：
* queue：队列名称
* autoAck：是否自动确认
* callback：接收到消息后，执行的逻辑
*/
channel.basicConsume("hello",true,consumer);
//等待程序完成
Thread.sleep(5000);
//5.释放资源
channel.close();
connection.close();
}
