rabbitmq的java调用实例

本文将介绍rabbitmq在用java进行调用的代码实现

一、添加maven依赖

<dependency>    <groupId>com.rabbitmq</groupId>    <artifactId>amqp-client</artifactId>    <version>4.1.0</version></dependency>

二、消息生产者

关键点如下：

1、创建ConnectionFactory，包括设置rabbitmq服务的地址与端口号（amqp默认端口是5672）、用户名、密码、vhost(默认是/) ;

2、获取Connection ;

3、获取Channel ,并在其上声明queue、exchanger，并通过routingkey把queue在exchanger进行绑定 ;

代码实例如下：

public class RabbitmqProducerMain {    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("192.168.0.107");        factory.setPort(5672);        factory.setUsername("admin");        factory.setPassword("123456");        factory.setVirtualHost("vhostOne");        Connection connection =  factory.newConnection();        Channel channel = connection.createChannel();        String queueName = "queueOne";        String exchangeName = "exchangerOne";        String routingKey = "queueOne";        channel.exchangeDeclare(exchangeName,"direct");        channel.queueDeclare(queueName,false,false,false,null);        channel.queueBind(queueName,exchangeName,routingKey);        int msgCnt =15000;        while(msgCnt-->0){            String msg = "msg"+Math.random()*100;            channel.basicPublish(exchangeName,routingKey,null,msg.getBytes());  //发送消息            System.out.println("produce msg :"+msg);            TimeUnit.MILLISECONDS.sleep((long) (Math.random()*500));        }        channel.close();        connection.close();    }}

三、消息消费者

关键点如下：

1、创建ConnectionFactory，包括设置rabbitmq服务的地址与端口号（amqp默认端口是5672）、用户名、密码、vhost(默认是/) ;

2、获取Connection ;

3、获取Channel ,并在其上声明queue ;

4、定义消费消息Consumer；

5、消费消息channel.basicConsume(queueName,false,"queueOne",consumer);

代码实例如下：

public class RabbitmqConsumerMain {    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("192.168.0.107");        factory.setPort(5672);        factory.setUsername("admin");        factory.setPassword("123456");        factory.setVirtualHost("vhostOne");        Connection connection =  factory.newConnection();        Channel channel = connection.createChannel();        String queueName = "queueOne";        channel.queueDeclare(queueName,false,false,false,null);        channel.basicQos(5);  //每次取5条消息        Consumer consumer = new DefaultConsumer(channel){            @Override            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {                //消费消费                String msg = new String(body,"utf-8");                System.out.println("consume msg: "+msg);                try {                    TimeUnit.MILLISECONDS.sleep((long) (Math.random()*500));                } catch (InterruptedException e) {                    e.printStackTrace();                }                //手动消息确认                getChannel().basicAck(envelope.getDeliveryTag(),false);            }        };        //调用消费消息        channel.basicConsume(queueName,false,"queueOne",consumer);    }}