2019独角兽企业重金招聘Python工程师标准>>> 
1.配置rabbitmq集群（可以参考前一篇RabbitMq之部署集群）
2.Nginx做负载均衡
注意:Nginx1.90版本后 新增了stream 模块用于一般的 TCP 代理和负载均衡，之前版本不支持
修改Nginx配置文件nginx.conf添加如下配置，监听12345端口
stream {
upstream rabbitmqserver {
server 192.168.191.20:5672;
server 192.168.191.131:5672;
server 192.168.191.132:5672;
}
server {
listen 12345;
proxy_pass rabbitmqserver;
}
}
修改后重启Nginx，使之生效。
3.测试
获取连接的工具类
package com.sky.study;
import java.io.IOException;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
/**
* 生成连接
* @author 86940
*
*/
public class ConnectionUtil {
public static Connection getConnection() throws IOException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.191.132");//做Nginx负载均衡的服务器地址
factory.setPort(12345);//使用Nginx做了tcp负载均衡，监听的是12345端口
factory.setUsername("admin");
factory.setPassword("123456");
factory.setVirtualHost("hello");
Connection connection = factory.newConnection();
return connection;
}
}
生产者
package com.sky.study.helloWorld;
import java.io.IOException;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.sky.study.ConnectionUtil;
public class Send {
private static final String QUEUE_NAME = "q.test.01";
public static void main(String[] args) {
Connection connection = null;
Channel channel = null;
try {
// 获取连接
connection = ConnectionUtil.getConnection();
// 创建通过
channel = connection.createChannel();
// 声明（创建）队列
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
// 消息
String message = "Hello World!";
channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
System.out.println("发送成功");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (channel != null) {
try {
channel.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (connection != null) {
try {
connection.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
消费者
package com.sky.study.helloWorld;
import java.io.IOException;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConsumerCancelledException;
import com.rabbitmq.client.QueueingConsumer;
import com.rabbitmq.client.QueueingConsumer.Delivery;
import com.sky.study.ConnectionUtil;
import com.rabbitmq.client.ShutdownSignalException;
public class Recv {
private static final String QUEUE_NAME = "q.test.01";
public static void main(String[] args) {
Connection connection = null;
Channel channel = null;
try {
connection = ConnectionUtil.getConnection();
channel = connection.createChannel();
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
// 定义队列的消费者
QueueingConsumer consumer = new QueueingConsumer(channel);
// 监听队列
channel.basicConsume(QUEUE_NAME, true, consumer);
// 获取消息
while (true) {
Delivery nextDelivery = consumer.nextDelivery();
String message = new String(nextDelivery.getBody());
System.out.println(message);
}
} catch (IOException e) {
e.printStackTrace();
} catch (ShutdownSignalException e) {
e.printStackTrace();
} catch (ConsumerCancelledException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
结束，谢谢支持