RabbitMq安装及java demo

1. RabbitMq 安装

我使用的是mac操作系统，所以这里只介绍mac系统上安装rabbitmq的过程，后面代码部分都是一样的，话不多说，直接干货。

• 安装home brew
  官方推荐使用home brew安装，所以如果你没有安装hom brew，请先下载并安装，地址为：http://brew.sh/

• 安装rabbitmq
  直接一句话，brew install rabbitmq，是不是很简单。如果遇到错误，很有可能是安装erlang的时候提示权限不够，根据提示给相应的目录相关权限即可。
  例如：sudo chmod -R g+w /usr/local

  安装完成之后需要将/usr/local/sbin添加到$PATH
  PATH=$PATH:[…]:/usr/local/sbin

  然后启动rabbitmq
  :~ rabbitmq-server
  搞定!

2. RabbitMq 使用

这里只介绍简单的consumer和producer, 直接上代码：

producer:

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

public class RabbitMqProducer {

    private final String URL = "localhost";

    private final String EXCHANGE_NAME = "bj-geinihua-doc-module";

    private static final String[] SEVERITIES = { "key-doc-module", "key-user-event"};

    private static final String ROUTING_KEY = "key-doc-module";

    private static final String  QUEUE_NAME = "bj-geinihua-credit";

    private final String USER_NAME = "";

    private final String PASSWORD = "";

    public void connectBroker(){
        try {
            ConnectionFactory factory = new ConnectionFactory();
            factory.setUsername("guest");
            factory.setPassword("guest");
            factory.setVirtualHost("/");
            factory.setHost("localhost");
            factory.setPort(5672);
            Connection connection = factory.newConnection();

//            ConnectionFactory factory = new ConnectionFactory();  
//            factory.setHost("localhost");
//            Connection connection = factory.newConnection();  
            Channel channel = connection.createChannel();
            //声明转发器
            channel.exchangeDeclare(EXCHANGE_NAME, "direct", true);
            channel.queueDeclare(QUEUE_NAME, true, false, false, null); 
            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, ROUTING_KEY);

          //发送6条消息  
            for (int i = 0; i < 6; i++)  
            {  
                String severity = getSeverity();  
                String message = severity + "_log :" + UUID.randomUUID().toString();  
                // 发布消息至转发器，指定routingkey  
                channel.basicPublish(EXCHANGE_NAME, severity, null, message  
                        .getBytes());  
                System.out.println(" [x] Sent '" + message + "'");  
            }  

            channel.close();  
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String [] args){
        RabbitMqProducer producer = new RabbitMqProducer();
        producer.connectBroker();
    }

    /** 
     * 随机产生一种日志类型 
     *  
     * @return 
     */  
    private static String getSeverity()  
    {  
        Random random = new Random();  
        int ranVal = random.nextInt(2);  
        return SEVERITIES[ranVal];  
    } 
}

consumer:

import java.io.IOException;

import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;
import com.rabbitmq.client.QueueingConsumer;

public class RabbitMqConsumer {

private final String URL = "localhost";

    private final String EXCHANGE_NAME = "bj-geinihua-doc-module";

    private static final String[] SEVERITIES = { "key-doc-module", "key-user-event"};

    private static final String ROUTING_KEY = "key-doc-module";

    private static final String  QUEUE_NAME = "bj-geinihua-credit";

    private final String USER_NAME = "";

    private final String PASSWORD = "";

    public static void main(String[] args){
        RabbitMqConsumer consumer = new RabbitMqConsumer();
        consumer.connectBroker("key-user-event");
    }

    public void connectBroker(String routingKey){
        try {
            ConnectionFactory factory = new ConnectionFactory();
            factory.setUsername("guest");
            factory.setPassword("guest");
            factory.setVirtualHost("/");
            factory.setHost("localhost");
            factory.setPort(5672);
            Connection connection = factory.newConnection();
            final Channel channel = connection.createChannel();
            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, routingKey);
            QueueingConsumer consumer = new QueueingConsumer(channel);  
            channel.basicConsume(QUEUE_NAME, true, consumer);  
            while (true)  
            {  
                QueueingConsumer.Delivery delivery = consumer.nextDelivery();  
                String message = new String(delivery.getBody());  
                System.out.println(" [x] Received '" + message + "'");  
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

OK，运行试试吧，如有问题，可以添加我的qq：64701333，一起学习探讨，Good luck!

参考链接：
http://www.rabbitmq.com/api-guide.html
http://blog.youkuaiyun.com/lmj623565791/article/details/37620057