RabbitMQ java 原生代码

rabbitMQ 的交换器有四种类型:direct、fanout、topic、headers

 以下是具体的代码:

direct:路由键只能全部匹配,才能进入到指定队列中。其他使用

direct生产者

import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

import java.util.Arrays;
import java.util.List;

/**
 * direct 生产者
 */
public class DirectPro {

    public final static String EXCHANGE_NAME = "direct_exchange";//direct交换器名称
    public final static Integer SEND_NUM = 10;//发送消息次数

    public static void main(String[] args) throws Exception {
        //创建连接工厂,连接RabbitMQ
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("IP");//端口号、用户名、密码可以使用默认的
        connectionFactory.setUsername("用户名");
        connectionFactory.setPassword("密码");
        connectionFactory.setPort(5672);
        //创建连接
        Connection connection = connectionFactory.newConnection();
        //创建信道
        Channel channel = connection.createChannel();
        //在信道中设置交换器
        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.DIRECT);
        //交换器和队列绑定放到消费者进行
        //自定义路由键
        List<String> routeKey = Arrays.asList("key1","key2","key3");
        //发送消息
        for (int i=0;i<SEND_NUM;i++){
            String key = routeKey.get(i%routeKey.size());//发送的key
            String msg = "hello rabbitmq"+i;//发送的消息
            //消息进行发送
            channel.basicPublish(EXCHANGE_NAME,key,null,msg.getBytes());
            System.out.println("send:"+key+"==="+msg);
        }
        channel.close();
        connection.close();
    }

}

direct消费者

import com.rabbitmq.client.*;

import java.io.IOException;

/**
 * direct 消费者
 */
public class DirectCon {

    public final static String EXCHANGE_NAME = "direct_exchange";//direct交换器名称

    public final static String QUEUE_NAME = "queue_name";

    public static void main(String[] args) throws Exception {
        //创建连接工厂,连接RabbitMQ
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("IP");//端口号、用户名、密码可以使用默认的
        connectionFactory.setUsername("用户名");
        connectionFactory.setPassword("密码");
        connectionFactory.setPort(5672);
        //创建连接
        Connection connection = connectionFactory.newConnection();
        //创建信道
        Channel channel = connection.createChannel();
        //在信道中设置交换器
        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.DIRECT);
        //声明队列
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        //交换器和队列绑定
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"key1");
        System.out.println("waiting message.....");

        //声明消费者
        final Consumer consumer = new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body) throws IOException {
                String message = new String(body,"utf-8");
                System.out.println("Received:"+envelope.getRoutingKey()+"========"+message);
            }
        };
        //消费者在指定的对队列上消费
        channel.basicConsume(QUEUE_NAME,true,consumer);

    }

}

 

3:执行结果:首先启动消费者,再启动发送者

生产者

消费者

 

 

fanout:消息能发送到所有队列上,跟路由键没有任何关系。

 

fanout生产者:重新定义一个交换器,只需将交换器设置成fanout就可以

  //在信道中设置交换器

  channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.FANOUT);

 

fanout消费者:重新定义一个交换器和队列,将交换器设置成fanout,绑定的key可以随便写。

  //在信道中设置交换器
  channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.FANOUT);
  //声明队列
  channel.queueDeclare(QUEUE_NAME,false,false,false,null);
  //交换器和队列绑定
  channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"abc");

结果

生产者都一样

 

 消费者

 

 

topic:按照*、#的匹配规则,进入到对应的队列

topic生产者:只需将交换器设置成topic,路由键的设置必须是用点. 进行分割("key1.k","key2.k","key3.k")

topic消费者:重新定义一个交换器和队列

//交换器和队列绑定
channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"key2.*");

这样子就只能匹配key2.开头的

 

结果:生产者都一样

消费者

 

 

 

headers:是根据头部的消息映射到队列的。特殊的值x-match:all(全部匹配)、any(任何一个)。

生产者

        //在信道中设置交换器
        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.HEADERS);
        //设置要发送headers值
        Map<String, Object> heardersMap = new HashMap<String, Object>();
        heardersMap.put("api", "login");
        heardersMap.put("version", 1.0);
        heardersMap.put("radom", UUID.randomUUID().toString());
        //设置消息的属性
        AMQP.BasicProperties pro = new AMQP.BasicProperties.Builder()
                .headers(heardersMap)
                .build();

        //发送消息
        for (int i=0;i<SEND_NUM;i++){
            String msg = "hello rabbitmq"+i;//发送的消息
            //消息进行发送
            channel.basicPublish(EXCHANGE_NAME,"",pro,msg.getBytes());
            System.out.println("send:"+msg);
        }
消费者
        //在信道中设置交换器
        channel.exchangeDeclare(EXCHANGE_NAME, BuiltinExchangeType.HEADERS);

        Map<String, Object> arguments = new HashMap<String, Object>();
        arguments.put("x-match", "any");
        arguments.put("api", "login");
        arguments.put("version", 1.0);
        arguments.put("dataType", "json");

        //交换器和队列绑定
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName,EXCHANGE_NAME,"",arguments);
        System.out.println("waiting message.....");

        //声明消费者
        final Consumer consumer = new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body) throws IOException {
                String message = new String(body,"utf-8");
                System.out.println(" [HeaderRecv] Received '" +
                        properties.getHeaders() + "':'" + message + "'");
            }
        };
结果:发送者一样
消费者

 

 

 以上就是Java对原生的RabbitMQ基本使用。

 

posted @ 2019-10-07 16:10  陌然浅笑  阅读(642)  评论(0编辑  收藏  举报