RabbitMQ快速入门

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：

1. 建立连接
2. 开启信道
3. 声明交换机
4. 声明队列
5. 发送消息
6. 释放资源

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：

1. 建立连接
2. 创建信道
3. 声明队列
4. 消费消息
5. 释放资源

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ChannelChannel 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@Overridepublic 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();}