RabbitMQ消息队列(四)

1.fanout 发布/订阅
在上一篇中队列都指定了名称，现在我们需要所有的日志信息，而不只是其中的一个。如果要做这样的队列，我们需要2件事，一个就是获取一个新的空的队列，这样我就需要创建一个随机名称的队列，最好让服务器帮我们做出选择，第一个就是我们断开用户的队列，应该自动进行删除。

生产者:

/** * 发布/订阅 生产者 */public class EmitLog {    public static final String EXCHANGE_NAME = "logs";    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");//fanout表示分发，所有的消费者得到同样的队列信息        for (int i = 0 ; i<10;i++){            String message = "hello fanout "+i;            channel.basicPublish(EXCHANGE_NAME,"",null,message.getBytes("utf-8"));            System.out.println("emitLog send '"+message+"'");        }        channel.close();        connection.close();    }}

消费者(两个消费者代码一样):

/** * 消费者 */public class ReceiveLogs1 {    public static final String EXCHANGE_NAME = "logs";    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");        //产生一个随机的队列名称        String queue = channel.queueDeclare().getQueue();        //对队列进行绑定        channel.queueBind(queue,EXCHANGE_NAME,"");        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("ReceiveLogs1 Received '" + message + "'");            }        };        channel.basicConsume(queue,true,consumer); //从队列中删除    }}

查看结果:
生产者:

消费者1:

消费者2:

2.Routing 按路线发布接收

生产者:

/** * routing key 匹配，Message就会被传递到相应的queue中 */public class RoutingSendDirect {    private static final String EXCHANGE_NAME = "direct_logs";    // 路由关键字    private static final String[] routingKeys = new String[]{"info" ,"warning", "error"};    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明交换机,注意是direct        channel.exchangeDeclare(EXCHANGE_NAME,"direct");        //发送信息        for (String key : routingKeys){            String message = "RoutingSendDirect Send the message level:" + key;            channel.basicPublish(EXCHANGE_NAME,key,null,message.getBytes("utf-8"));            System.out.println("RoutingSendDirect Send"+key +"':'" + message);        }        channel.close();        connection.close();    }}

消费者1:

/** * 消费者1 */public class ReceiveLogsDirect1 {    // 交换器名称    private static final String EXCHANGE_NAME = "direct_logs";    // 路由关键字    private static final String[] routingKeys = new String[]{"error"};    public static void main(String[] args)throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明交换器        channel.exchangeDeclare(EXCHANGE_NAME,"direct");        //获取匿名队列名称        String queue = channel.queueDeclare().getQueue();        //根据路由关键字进行绑定        for (String key : routingKeys) {            channel.queueBind(queue,EXCHANGE_NAME,key);            System.out.println("ReceiveLogsDirect1 exchange:"+EXCHANGE_NAME+"," +                    " queue:"+channel+", BindRoutingKey:" + key);        }        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("ReceiveLogsDirect1 Received '" + envelope.getRoutingKey() + "':'" + message + "'");            }        };        channel.basicConsume(queue,true,consumer);    }}

消费者2:

/** * 消费者2 */public class ReceiveLogsDirect2 {    // 交换器名称    private static final String EXCHANGE_NAME = "direct_logs";    // 路由关键字    private static final String[] routingKeys = new String[]{"info" ,"warning","error"};    public static void main(String[] args)throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明交换器        channel.exchangeDeclare(EXCHANGE_NAME,"direct");        //获取匿名队列名称        String queue = channel.queueDeclare().getQueue();        //根据路由关键字进行绑定        for (String key : routingKeys) {            channel.queueBind(queue,EXCHANGE_NAME,key);            System.out.println("ReceiveLogsDirect2 exchange:"+EXCHANGE_NAME+"," +                    " queue:"+channel+", BindRoutingKey:" + key);        }        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("ReceiveLogsDirect2 Received '" + envelope.getRoutingKey() + "':'" + message + "'");            }        };        channel.basicConsume(queue,true,consumer);    }}

查看结果:
生产者:

消费者1:

消费者2:

3.Topics 模糊匹配
* : 可以替代一个词
# :可以替代0个或更多词

生产者:

/** * 模糊匹配队列  * 生产者 */public class TopicSend {    public static final String EXCHANGE_NAME = "topic_logs";    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明一个匹配模式的交换机        channel.exchangeDeclare(EXCHANGE_NAME,"topic");        //待发送的消息        String[] routingKeys=new String[]{                "quick.orange.rabbit",                "lazy.orange.elephant",                "quick.orange.fox",                "lazy.brown.fox",                "quick.brown.fox",                "quick.orange.male.rabbit",                "lazy.orange.male.rabbit"        };        //发送消息        for (String key:routingKeys ) {            String message = "From "+key+" routingKey' s message!";            channel.basicPublish(EXCHANGE_NAME,key,null,message.getBytes("utf-8"));            System.out.println("TopicSend Sent '" + key + "':'" + message + "'");        }        channel.close();        connection.close();    }}

消费者1:

/** * 消费者1 */public class ReceiveLogsTopic1 {    private static final String EXCHANGE_NAME = "topic_logs";    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明一个匹配模式的交换机        channel.exchangeDeclare(EXCHANGE_NAME,"topic");        String queue = channel.queueDeclare().getQueue();        //路由关键字        String[] routingKeys = new String[]{"*.orange.*"};        //绑定路由        for (String key : routingKeys){            channel.queueBind(queue,EXCHANGE_NAME,key);            System.out.println("ReceiveLogsTopic1 exchange:" + EXCHANGE_NAME + ", queue:" + queue + ", BindRoutingKey:" + key);        }        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("ReceiveLogsTopic1 Received '" + envelope.getRoutingKey() + "':'" + message + "'");            }        };        channel.basicConsume(queue,true,consumer);    }}

消费者2:

/** * 消费者2 */public class ReceiveLogsTopic2 {    private static final String EXCHANGE_NAME = "topic_logs";    public static void main(String[] args) throws Exception {        ConnectionFactory factory = new ConnectionFactory();        factory.setHost("localhost");        Connection connection = factory.newConnection();        Channel channel = connection.createChannel();        //声明一个匹配模式的交换机        channel.exchangeDeclare(EXCHANGE_NAME,"topic");        String queue = channel.queueDeclare().getQueue();        //路由关键字        String[] routingKeys = new String[]{"*.*.rabbit", "lazy.#"};        //绑定路由        for (String key : routingKeys){            channel.queueBind(queue,EXCHANGE_NAME,key);            System.out.println("ReceiveLogsTopic2 exchange:" + EXCHANGE_NAME + ", queue:" + queue + ", BindRoutingKey:" + key);        }        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("ReceiveLogsTopic2 Received '" + envelope.getRoutingKey() + "':'" + message + "'");            }        };        channel.basicConsume(queue,true,consumer);    }}

查看结果:
生产者:

消费者1:

消费者2: