设置消息TTL——对消息本身单独进行设置

shasha 2022年06月12日编程语言 251 0

一代码

package com.rabbitmq.ttl; 
 
import com.rabbitmq.client.AMQP; 
import com.rabbitmq.client.Channel; 
import com.rabbitmq.client.Connection; 
import com.rabbitmq.client.ConnectionFactory; 
import com.rabbitmq.util.ConnectionUtils; 
import java.io.IOException; 
import java.util.concurrent.TimeoutException; 
 
/** 
* 消息过期（消息自身设置） 
*/ 
public class MsgTTL1 { 
    private static final String EXCHANGE_NAME = "exchange_demo"; 
    private static final String ROUTING_KEY = "routingkey_demo"; 
    private static final String QUEUE_NAME = "msgTTL1_demo"; 
    private static final String IP_ADDRESS = "127.0.0.1"; 
    private static final int PORT = 5672;//RabbitMQ（AMQP） 服务端默认端口号为 5672 
 
    public static void main(String[] args) throws IOException, 
            TimeoutException, InterruptedException { 
        ConnectionFactory factory = new ConnectionFactory(); 
        factory.setHost(IP_ADDRESS); 
        factory.setUsername("root"); 
        factory.setPassword("123456"); 
        Connection connection = factory.newConnection(); 
        Channel channel = connection.createChannel(); 
        // 创建一个 type="direct" 、持久化的、非自动删除的交换器 
        channel.exchangeDeclare(EXCHANGE_NAME, "direct", true, false, null); 
        // 创建一个持久化、非排他的、非自动删除的队列 
        channel.queueDeclare(QUEUE_NAME, true, false, false, null); 
        // 将交换器与队列通过路由键绑定 
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, ROUTING_KEY); 
        // 发送一条持久化的消息: hello world ! 
        String message = "Hello World !"; 
 
        AMQP.BasicProperties.Builder builder = new AMQP.BasicProperties.Builder(); 
        builder.deliveryMode(2); 
        builder.expiration("30000");   // 30秒 
        AMQP.BasicProperties properties = builder.build(); 
        // 消息发布 
        // 第三个参数为mandatory 
        channel.basicPublish(EXCHANGE_NAME, ROUTING_KEY, false, 
                properties, message.getBytes()); 
        ConnectionUtils.close(channel, connection); 
    } 
}

二测试

1 30秒内查看消息是否还存在于队列——存在于队列