发布于2020-11-19 20:27 阅读(1023) 评论(0) 点赞(30) 收藏(4)
package com.fang.java_client.work_queue_2;
import com.fang.java_client.utils.RabbitMQUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
/**
* @Author Mr. Sun.
* @Date 2020-11-12 16:44
*
* 这种模型默认平均分配
* 解决办法就是把默认确认机制关掉
*/
public class Provider {
public static void main(String[] args) throws Exception {
Connection connection = RabbitMQUtils.getConnection();
Channel channel = connection.createChannel();
// 申明队列 这些true false 什么的点进去看,有英文注释!
channel.queueDeclare("worker", true, false, false, null);
// 生产消息
for (int i=0;i<100;i++) {
channel.basicPublish("", "worker", null, ("hello work queue"+i).getBytes());
}
// 关闭资源
RabbitMQUtils.closeConnectAndChannel(channel,connection);
}
}
// 两个消费者
package com.fang.java_client.work_queue_2;
import com.fang.java_client.utils.RabbitMQUtils;
import com.rabbitmq.client.*;
import lombok.SneakyThrows;
import java.io.IOException;
/**
* @Author Mr. Sun.
* @Date 2020-11-12 17:35
*/
public class Consumer_1 {
public static void main(String[] args) throws Exception {
Connection connection = RabbitMQUtils.getConnection();
Channel channel = connection.createChannel();
channel.queueDeclare("worker", true, false, false, null);
// 告诉通道一次只消费一个
// 解决能者多劳!
channel.basicQos(1);
// 默认确认机制 autoAck
channel.basicConsume("worker", false, new DefaultConsumer(channel) {
@SneakyThrows
@Override
public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
System.out.println("consumer1" + new String(body));
Thread.sleep(500);
// 手动确认
//@param multiple 是否开启多个消息同时确认
channel.basicAck(envelope.getDeliveryTag(), false);
}
});
}
}
-------------------------------------------------------------------
package com.fang.java_client.work_queue_2;
import com.fang.java_client.utils.RabbitMQUtils;
import com.rabbitmq.client.*;
import lombok.SneakyThrows;
import java.io.IOException;
/**
* @Author Mr. Sun.
* @Date 2020-11-12 17:35
*/
public class Consumer_2 {
public static void main(String[] args) throws Exception {
Connection connection = RabbitMQUtils.getConnection();
Channel channel = connection.createChannel();
// 告诉通道一次只消费一个
channel.basicQos(1);
channel.queueDeclare("worker", true, false, false, null);
channel.basicConsume("worker", false, new DefaultConsumer(channel) {
@SneakyThrows
@Override
public void handleDelivery(java.lang.String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
System.out.println("consumer2" + new String(body));
Thread.sleep(1000);
// 手动确认
channel.basicAck(envelope.getDeliveryTag(), false);
}
});
}
}
@Test// worke queues 模型
void test_work_queue() {
for (int i = 0; i < 10; i++) {
rabbitTemplate.convertAndSend("work", "worker 模型"+i);
}
}
// worker 模型默认公平模型~
@RabbitListener(queuesToDeclare=@Queue(value = "work"))
private void receiveMsgWork1(String msg){
System.out.println("worker_1:"+msg);
}
@RabbitListener(queuesToDeclare=@Queue(value = "work"))
private void receiveMsgWork2(String msg){
System.out.println("worker_2:"+msg);
}
作者:天使之恋
链接:http://www.javaheidong.com/blog/article/986/68f8e03d0ada45a58de2/
来源:java黑洞网
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