关于linux:RabbitMQ基础

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1、RabbitMQ

  1. 音讯队列解决了什么问题

    • 异步解决
    • 利用解耦
    • 流量削锋
    • 日志解决

运行 rabbitmq 镜像

# docker run --name rabbitmq -tid -p 5672:5672 -p 15672:15672 -p 25672:25672 rabbitmq

批改 rabbitmq 设置

# docker exec -it rabbitmq /bin/bash
新增用户
# rabbitmqctl add_user [user_name] [pwd]
查看用户
# rabbitmqctl list_users
Setting permissions for user “[user_name]” in vhost “/” …
# rabbitmqctl set_permissions -p "/" [user_name] ".*" ".*" ".*"

# rabbitmqctl list_permissions -p /
将 [user_name] 用户设置为 administrator 角色
# rabbitmqctl set_user_tags asdf administrator
删除 guest 用户
# rabbitmqctl delete_user guest

开启 web 界面

# rabbitmq-plugins enable rabbitmq_management

web 拜访

# http://IP:15672

  1. Java 操作 RabbitMQ

    1. simple 简略队列
    2. work queues 工作队列 偏心散发 轮询散发
    3. publish/subscribe 公布订阅
    4. routing 路由抉择 通配符模式
    5. Topics 主题
    6. 手动和主动确认音讯
    7. 队列的长久化和非长久化
    8. rabbitMQ 的提早队列

    依赖

    <dependencies>
    <!-- 引入队列依赖 -->
    <dependency>
        <groupId>com.rabbitmq</groupId>
        <artifactId>amqp-client</artifactId>
        <version>4.0.2</version>
    </dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.10</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.5</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
</dependency>
    </dependencies>

2、简略队列

2.2、定义连贯 MQ 的工具

public class connectionUtil {public static Connection getConnection() throws IOException, TimeoutException {
        // 定义链接工厂
        ConnectionFactory factory = new ConnectionFactory();
        // 设置服务地址[运行 rabbitMQ 的地址]
        factory.setHost("192.168.168.130");
        //AMQ 的端口号
        factory.setPort(5672);
        //vHost
        factory.setVirtualHost("lgz");
        factory.setUsername("lgz");
        factory.setPassword("pwd123456");
        return   factory.newConnection();}
}

2.3、生产者发送音讯

// 测试发送信息
public class ProducerSend {
    private static final String QUEUE_NAME="test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException {System.out.println("cs");
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 从链接中获取通道
        Channel channel = connection.createChannel();
        // 队列申明
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        String msg="hello simple";
         channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
        System.out.println("test success");
         channel.close();
         connection.close();}

}

2.4、消费者获取信息

public class comsumerGain {

    private static final String QUE_NAME="test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException {
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 创立通道
        Channel channel = connection.createChannel();
        // 定义消费者
        DefaultConsumer  consumer = new DefaultConsumer(channel) {
            // 获取达到的音讯
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg = new String(body, "utf-8");
                System.out.println(msg);
            }
        };
        // 监听队列
        channel.basicConsume(QUE_NAME,true,consumer);

    }
}

2.5、简略队列的毛病

  1. 耦合性高：生产者一 一对应消费者

3、工作队列

3.1、工作队列模型

3.2、生产者演示

public class WorkQueue {
    public static  final  String QUEUE_NAME="work_queue";

    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
        // 创立连贯
        Connection connection = connectionUtil.getConnection();
        // 获取 channel 链接
        Channel channel = connection.createChannel();
        //
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        for (int i = 0; i <50 ; i++) {
            String msg="No"+i;
            System.out.println(msg);
            channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
            Thread.sleep(i*20);
        }
        channel.close();
        connection.close();}
}

3.3、消费者 1 

public class WorkRecv {
    private final static String QUEUE_NAME="work_queue";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 获取 channel
        Channel channel = connection.createChannel();
        // 申明队列
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        // 定义一个消费者
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            // 音讯触发

            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");

                System.out.println("receive"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("完结");
                }
            }
        };

        channel.basicConsume(QUEUE_NAME,true,defaultConsumer);

    }

3.4、消费者 2 

public class WorkRecv {
    private final static String QUEUE_NAME="work_queue";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 获取 channel
        Channel channel = connection.createChannel();
        // 申明队列
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        // 定义一个消费者
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            // 音讯触发

            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");

                System.out.println("receive"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("完结");
                }
            }
        };

        channel.basicConsume(QUEUE_NAME,true,defaultConsumer);

    }
}

3.5、总结

  1. 采纳了轮询算法轮询机制

4、偏心散发

4.1、生产者

public class WorkQueue {
    public static  final  String QUEUE_NAME="work_queue";

    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
        // 创立连贯
        Connection connection = connectionUtil.getConnection();
        // 获取 channel 链接
        Channel channel = connection.createChannel();
        //
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        /*
        * 每个消费者发送确认音讯之前，音讯队列不发送下一个音讯到消费者。【一次只解决一个音讯】* */
        int prefetchCount=1;
        channel.basicQos(prefetchCount);


        for (int i = 0; i <50 ; i++) {
            String msg="No"+i;
            System.out.println(msg);
            channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
            Thread.sleep(i*20);
        }
        channel.close();
        connection.close();}
}

4.2、消费者 1 

public class WorkRecv {
    private final static String QUEUE_NAME="work_queue";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 获取 channel
        final Channel channel = connection.createChannel();
        // 申明队列
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        channel.basicQos(1); // 一次只散发一个

        // 定义一个消费者
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            // 音讯触发





            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");

                System.out.println("receive"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("完结");

                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        channel.basicConsume(QUEUE_NAME,false,defaultConsumer);

    }
}

4.2、消费者 2 

public class WorkReceive {
    private final static String QUEUE_NAME="work_queue";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 获取链接
        Connection connection = connectionUtil.getConnection();
        // 获取 channel
        final Channel channel = connection.createChannel();
        // 申明队列
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        // 保障每次只散发一个
        channel.basicQos(1);

        // 定义一个消费者
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            // 音讯触发

            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");

                System.out.println("receive"+msg);

                try {Thread.sleep(2000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("【start】:");

                    // 手动回执一个音讯
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        channel.basicConsume(QUEUE_NAME,false,defaultConsumer);

    }
}

4.3、疑难问题

  1. basicQos(1); 用于限度 rabbitMQ 一次只散发一个音讯
  2. 应用偏心散发必须敞开自动应答 ack，改成手动的

5、音讯应答与音讯长久化

5.1、音讯应答

  1. boolean autoack=false（手动确认模式），如果有消费者宕机，则会将信息交付给其余的消费者。【rabbitmq 反对音讯应答，消费者发送一个音讯确认，则 rabbitmq 会进行删除内存数据】
  2. Boolean autoAck=true（主动确认模式），一旦 rabbitmq 将音讯分发给消费者就会从内存中删除

如果这种状况下，杀死正在执行的消费者，就会造成正在解决的信息失落。

  1. 默认状况下是 autoAck 是 false
  2. 如果 rabbitMQ 宕机，则服务器数据依然失落

5.2、音讯长久化

// 申明队列
channel.queueDeclare(QUEUE_NAME,[durable]false,false,false,null);
//durable：长久化，

  1. 将程序中的 durable 的 false 改称为 true，也是不能够的。因为定义的 QUEUE_NAME 代表这个 queue 是未长久化的，rabbitmq 不准从新定义一个已存在的队列

    • 在控制台【拜访 mq 的界面】进行删除这个队列

6、订阅模式【fanout】

  1. 一个生产者，多个消费者
  2. 每个消费者都有本人的队列
  3. 生产者将音讯发送到交换机【转发器】，而不是间接发送到队列中
  4. 每个队列都绑定在交换机
  5. 生产者发送的音讯，通过交换机达到队列【实现一个音讯被多个消费者生产】
  • 交换机中无奈数据【只有队列具备存储能力】，如果想要进行存储

6.1、生产者

public class Send {
    public static final String EXCHANGE_NAME="test_exchange_fanout";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();

        Channel channel = connection.createChannel();

        // 申明交换机
        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");// 散发

        String msg="hello_exchange";
        channel.basicPublish(EXCHANGE_NAME,"",null,msg.getBytes());
        System.out.println("send:"+msg);

        channel.close();
        connection.close();}
}

6.2、消费者

public class Receive1 {
    public static final String QUEUE_NAME="test_queue_exchange";
    public static final String EXCHANGE_NAME="test_exchange_fanout";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 绑定队列到交换机
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"");

        channel.basicQos(1);// 保障每次只能散发一个

        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");
                System.out.println("Receive1"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[ok]");
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        boolean autoAck=false;
        channel.basicConsume(QUEUE_NAME,autoAck,defaultConsumer);
    }
}

6.3、消费者 2 

public class Receive2{
    public static final String QUEUE_NAME="email_queue_exchange";
    public static final String EXCHANGE_NAME="test_exchange_fanout";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 绑定队列到交换机
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"");

        channel.basicQos(1);// 保障每次只能散发一个

        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");
                System.out.println("Receive2"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[ok2]");
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        boolean autoAck=false;
        channel.basicConsume(QUEUE_NAME,autoAck,defaultConsumer);
    }
}

7、Routing【direct】

一方面接管生产者的音讯，另一方面向队列发送音讯

Fanout（不解决路由键）

Direct（解决路由键）

7.1、路由模式

7.2、生产者

public class Send {
    public static final String EXCHANGE_NAME="test_exchange_direct";

    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();
        Channel channel = connection.createChannel();

        // 申明交换机
        channel.exchangeDeclare(EXCHANGE_NAME,"direct");

        String msg=new String("Hello direct");

        String routingKey="warning";
        channel.basicPublish(EXCHANGE_NAME,routingKey,null,msg.getBytes());
        System.out.println("send"+msg);

        channel.close();
        connection.close();}
}

7.3、消费者 1 

public class Receive1 {
    public static final String EXCHANGE_NAME="test_exchange_direct";
    public static final String QUEUE_NAME="queue_direct_1";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();

        final Channel channel = connection.createChannel();

        //
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        channel.basicQos(1);
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"error");

        // 定义一个消费者
        DefaultConsumer consumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");


                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[done]"+msg);
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };
        boolean autoAck=false;// 自动应答 false
        channel.basicConsume(QUEUE_NAME,autoAck,consumer);
    }
}

7.3、消费者 2 

public class Receive2 {
    public static final String EXCHANGE_NAME="test_exchange_direct";
    public static final String QUEUE_NAME="queue_direct_1";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();

        final Channel channel = connection.createChannel();

        //
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        channel.basicQos(1);
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"error");
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"warning");
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"info");

        // 定义一个消费者
        DefaultConsumer consumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");


                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[done]"+msg);
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };
        boolean autoAck=false;// 自动应答 false
        channel.basicConsume(QUEUE_NAME,autoAck,consumer);
    }
}

8、Topics Exchange

相似于 sql 中的含糊查问，

将路由键 routing key 和某个模式盘匹配

  1. 匹配一个或者多个

  2. * 匹配一个

8.1、生产者

public class Send {

    private static final String EXCHANGE_NAME="test_exchange_topic";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();

        Channel channel = connection.createChannel();

        channel.exchangeDeclare(EXCHANGE_NAME,"topic");

        String msg="商品";
        channel.basicPublish(EXCHANGE_NAME,"goods.delete",null,msg.getBytes());
        System.out.println("---send"+msg);


        channel.close();
        connection.close();}

}

8.2、消费者 1 

public class Receive1 {
    public static final String QUEUE_NAME="test_queue_topic_1";
    private static final String EXCHANGE_NAME="test_exchange_topic";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 绑定队列到交换机
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"goods.add");



        channel.basicQos(1);// 保障每次只能散发一个

        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");
                System.out.println("Receive1"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[ok]");
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        boolean autoAck=false;
        channel.basicConsume(QUEUE_NAME,autoAck,defaultConsumer);
    }
}

8.2、消费者 2 

public class Receive2 {
    public static final String QUEUE_NAME="test_queue_topic_1=2";
    private static final String EXCHANGE_NAME="test_exchange_topic";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 绑定队列到交换机
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,"goods.#");
        channel.basicQos(1);// 保障每次只能散发一个

        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                String msg=new String(body,"utf-8");
                System.out.println("Receive1"+msg);

                try {Thread.sleep(1000);
                } catch (InterruptedException e) {e.printStackTrace();
                }finally {System.out.println("[ok]");
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };

        boolean autoAck=false;
        channel.basicConsume(QUEUE_NAME,autoAck,defaultConsumer);
    }
}

9、音讯确认机制

在 MQ 中能够通过长久化数据解决 rabbitmq 服务器异样的数据失落问题

  1. 生产者将音讯发送进来当前，如何晓得音讯到底有没有达到 rabbitmq 服务器?

    • 形式一：AMQP 实现事务机制
    • 形式二：Confirm 模式

9.1、事务机制

txSelect：用户将以后 channel 设置成 transaction 模式

txCommit：用于提交事务

txRollback：回滚事务

生产者

public class TxSend {
    private static final String QUEUE_NAME="tx_queue";

    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();


        Channel channel = connection.createChannel();

        String msg="hello autoCommit";
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);



        try {channel.txSelect();
            channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
            channel.txCommit();
            int i=1/0;
            System.out.println(msg);
        } catch (IOException e) {channel.txRollback();
            System.out.println("error");
            e.printStackTrace();}

        channel.close();
        connection.close();}
}

消费者

public class TxReceive1 {
    private static final String QUEUE_NAME="tx_queue";
    public static void main(String[] args) throws IOException, TimeoutException {Connection connection = ConnectionUtil.getConnection();

        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        channel.basicConsume(QUEUE_NAME,true,new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {super.handleDelivery(consumerTag, envelope, properties, body);
                System.out.println("receive"+new String(body,"utf-8"));
            }
        });

    }
}

9.2、生产者 Confirm 模式

9.2.1、发送单条

public class Send1 {
    private static final String QUEUE_NAME="tx_queue";
    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {Connection connection = ConnectionUtil.getConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 设置为 confirm 模式
        channel.confirmSelect();

        String msg="confirm_text";

        channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());

        if (!channel.waitForConfirms()){System.out.println("send message failed");
        }else {System.out.println("success");
        }
        channel.close();
        connection.close();}
}

9.2.2、批量发送

public class SendMore {
    private static final String QUEUE_NAME="confirm_queue";
    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {Connection connection = ConnectionUtil.getConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);

        // 设置为 confirm 模式
        channel.confirmSelect();

        String msg="confirm_text";

        channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
        // 次要进行遍历发送，串行的【发送完之后在进行确认】for (int i = 0; i <10 ; i++) {channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
        }
        if (!channel.waitForConfirms()){System.out.println("send message failed");
        }else {System.out.println("success");
        }
        channel.close();
        connection.close();}
}

9.3、异步模式

10、参数详解

10.1、queueDeclare

// 绑定 channel 与音讯队列
// 参数一: 队列名称【如果不存在该队列，则主动创立】// 参数二:durable【是否要进行长久化】// 参数三:exclusive【是否独占队列】// 参数四: 是否在生产实现之后是否要立刻删除队列【true：主动删除】【false：不主动删除】// 参数五：额定参数
channel.QueueDeclare(name, durable, autoDelete, exclusive, noWait, args);

channel.queueDeclare("helloWorld",false,false,false,null);

10.2、basicPublish

// 公布音讯
/*
* 参数 1:【exchange】交换机名称
* 参数 2：【routingKey】队列名称
* 参数 3：【props】传递音讯的额定设置
* 参数 4：传递音讯的具体内容【byte 类型】*
* */
channel.basicPublish("","helloWorld",null,"hello rabbitMQ".getBytes());

10.3、basicConsume

// 生产信息
/*
 * 参数一: 队列名称
 * 参数二：开启音讯的主动确认机制
 * 参数三：生产时的回调接口
 * */
channel.basicConsume("helloWorld",true,consumer);

11、整合 Boot

11.1、依赖导入

 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-amqp</artifactId>
     <version>2.2.6.RELEASE</version>
</dependency>

11.2、yml

spring:
  application:
    name: rabbit-springboot
  rabbitmq:
    host: 192.168.168.130
    port: 5672
    virtual-host: /
    username: lgz
    password: pwd123456

11.3boottest

@Autowired
private RabbitTemplate rabbitTemplate;

@Test
void contextLoads() {rabbitTemplate.convertAndSend("hello","helloWorld");
    System.out.println(1);
}

11.4、

@SpringBootTest
class BootRabbitmqApplicationTests {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @Test
    void contextLoads() {rabbitTemplate.convertAndSend("hello","helloWorld");
        System.out.println(1);
    }



    @Test
    public void testWork(){for (int i = 0; i <5 ; i++) {rabbitTemplate.convertAndSend("work","work 模型");

        }
    }

    @Test
    public void testFanout(){rabbitTemplate.convertAndSend("logs","","Fanout model");
    }


    @Test
    public void testRouting(){rabbitTemplate.convertAndSend("directs","info","info_key_routing_information");
    }


    @Test
    public  void  testTopic(){rabbitTemplate.convertAndSend("topics","user.save","user.save exchange");
    }
}

11.5、测试 topic[消费者]

@RabbitListener(bindings = {
        @QueueBinding(
                value = @Queue,
                exchange = @Exchange(type = "topic",name = "topics"),
                key = {"product.save","product.*"}
        )
})
public  void  receive(String msg){System.out.println("consumer1"+msg);
}

@RabbitListener(bindings = {
        @QueueBinding(
                value = @Queue,
                exchange = @Exchange(type = "topic",name = "topics"),
                key = {"user.save","user.*"}
        )
})
public  void  receive2(String msg){System.out.println("consumer2"+msg);
}

11.5、测试 routing

@RabbitListener(bindings = {
        @QueueBinding(
                value = @Queue,
                exchange = @Exchange(value = "directs",type = "direct"),
                key = {"info","error"}
        )
})
public void receive1(String msg){System.out.println(msg);
}

11.6、一般的 work

@RabbitListener(queuesToDeclare = @Queue("work"))
public void receive(String message){System.out.println("message:["+message+"]");
}

11.7、Fanout 模式

@RabbitListener(bindings = {
        @QueueBinding(
                value = @Queue, // 创立长期队列
                exchange =@Exchange(value = "logs", type = "fanout")    // 绑定的交换机
        )
})
public void receive1(String msg){System.out.println("["+msg+"]");
}

11.8、Simple

@Component
@RabbitListener(queuesToDeclare = @Queue("hello"))
public class Hello {
    @RabbitHandler
    public void receive1(String message){System.out.println("message"+message);
    }
}

正文完
linux
发表至： linux
2020-11-30
 0
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