RabbitMQ 最常用的三大模式實例解析
更新時間：2019年12月10日 09:34:16 作者：海向
這篇文章主要介紹了RabbitMQ 最常用的三大模式實例解析,文中通過示例代碼介紹的非常詳細，對大家的學(xué)習或者工作具有一定的參考學(xué)習價值,需要的朋友可以參考下
這篇文章主要介紹了RabbitMQ 最常用的三大模式實例解析,文中通過示例代碼介紹的非常詳細，對大家的學(xué)習或者工作具有一定的參考學(xué)習價值,需要的朋友可以參考下
Direct 模式
- 所有發(fā)送到 Direct Exchange 的消息被轉(zhuǎn)發(fā)到 RouteKey 中指定的 Queue。
- Direct 模式可以使用 RabbitMQ 自帶的 Exchange: default Exchange，所以不需要將 Exchange 進行任何綁定(binding)操作。
- 消息傳遞時，RouteKey 必須完全匹配才會被隊列接收，否則該消息會被拋棄，
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class DirectProducer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_direct_exchange";
String routingKey = "item.direct";
//5. 發(fā)送
String msg = "this is direct msg";
channel.basicPublish(exchangeName, routingKey, null, msg.getBytes());
System.out.println("Send message : " + msg);
//6. 關(guān)閉連接
channel.close();
connection.close();
}
}
import com.rabbitmq.client.*;
import java.io.IOException;
public class DirectConsumer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
factory.setAutomaticRecoveryEnabled(true);
factory.setNetworkRecoveryInterval(3000);
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_direct_exchange";
String queueName = "test_direct_queue";
String routingKey = "item.direct";
channel.exchangeDeclare(exchangeName, "direct", true, false, null);
channel.queueDeclare(queueName, false, false, false, null);
//一般不用代碼綁定，在管理界面手動綁定
channel.queueBind(queueName, exchangeName, routingKey);
//5. 創(chuàng)建消費者并接收消息
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(" [x] Received '" + message + "'");
}
};
//6. 設(shè)置 Channel 消費者綁定隊列
channel.basicConsume(queueName, true, consumer);
}
}
Send message : this is direct msg [x] Received 'this is direct msg'
Topic 模式
可以使用通配符進行模糊匹配
- 符號'#" 匹配一個或多個詞
- 符號"*”匹配不多不少一個詞
例如
- 'log.#"能夠匹配到'log.info.oa"
- "log.*"只會匹配到"log.erro“
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class TopicProducer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_topic_exchange";
String routingKey1 = "item.update";
String routingKey2 = "item.delete";
String routingKey3 = "user.add";
//5. 發(fā)送
String msg = "this is topic msg";
channel.basicPublish(exchangeName, routingKey1, null, msg.getBytes());
channel.basicPublish(exchangeName, routingKey2, null, msg.getBytes());
channel.basicPublish(exchangeName, routingKey3, null, msg.getBytes());
System.out.println("Send message : " + msg);
//6. 關(guān)閉連接
channel.close();
connection.close();
}
}
import com.rabbitmq.client.*;
import java.io.IOException;
public class TopicConsumer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
factory.setAutomaticRecoveryEnabled(true);
factory.setNetworkRecoveryInterval(3000);
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_topic_exchange";
String queueName = "test_topic_queue";
String routingKey = "item.#";
channel.exchangeDeclare(exchangeName, "topic", true, false, null);
channel.queueDeclare(queueName, false, false, false, null);
//一般不用代碼綁定，在管理界面手動綁定
channel.queueBind(queueName, exchangeName, routingKey);
//5. 創(chuàng)建消費者并接收消息
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(" [x] Received '" + message + "'");
}
};
//6. 設(shè)置 Channel 消費者綁定隊列
channel.basicConsume(queueName, true, consumer);
}
}
Send message : this is topc msg [x] Received 'this is topc msg' [x] Received 'this is topc msg'
Fanout 模式
不處理路由鍵，只需要簡單的將隊列綁定到交換機上發(fā)送到交換機的消息都會被轉(zhuǎn)發(fā)到與該交換機綁定的所有隊列上。
Fanout交換機轉(zhuǎn)發(fā)消息是最快的。
import com.rabbitmq.client.*;
import java.io.IOException;
public class FanoutConsumer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
factory.setAutomaticRecoveryEnabled(true);
factory.setNetworkRecoveryInterval(3000);
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_fanout_exchange";
String queueName = "test_fanout_queue";
String routingKey = "item.#";
channel.exchangeDeclare(exchangeName, "fanout", true, false, null);
channel.queueDeclare(queueName, false, false, false, null);
//一般不用代碼綁定，在管理界面手動綁定
channel.queueBind(queueName, exchangeName, routingKey);
//5. 創(chuàng)建消費者并接收消息
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(" [x] Received '" + message + "'");
}
};
//6. 設(shè)置 Channel 消費者綁定隊列
channel.basicConsume(queueName, true, consumer);
}
}
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class FanoutProducer {
public static void main(String[] args) throws Exception {
//1. 創(chuàng)建一個 ConnectionFactory 并進行設(shè)置
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
//2. 通過連接工廠來創(chuàng)建連接
Connection connection = factory.newConnection();
//3. 通過 Connection 來創(chuàng)建 Channel
Channel channel = connection.createChannel();
//4. 聲明
String exchangeName = "test_fanout_exchange";
String routingKey1 = "item.update";
String routingKey2 = "";
String routingKey3 = "ookjkjjkhjhk";//任意routingkey
//5. 發(fā)送
String msg = "this is fanout msg";
channel.basicPublish(exchangeName, routingKey1, null, msg.getBytes());
channel.basicPublish(exchangeName, routingKey2, null, msg.getBytes());
channel.basicPublish(exchangeName, routingKey3, null, msg.getBytes());
System.out.println("Send message : " + msg);
//6. 關(guān)閉連接
channel.close();
connection.close();
}
}
Send message : this is fanout msg [x] Received 'this is fanout msg' [x] Received 'this is fanout msg' [x] Received 'this is fanout msg'
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習有所幫助，也希望大家多多支持腳本之家。
相關(guān)文章
解決mac最新版intellij idea崩潰閃退crash的問題
這篇文章主要介紹了解決mac最新版intellij idea崩潰閃退crash的問題,本文給大家介紹的非常詳細，對大家的學(xué)習或工作具有一定的參考借鑒價值，需要的朋友可以參考下2020-09-09
這篇文章主要為大家詳細介紹了Java使用keySet方法獲取Map集合中的元素，具有一定的參考價值，感興趣的小伙伴們可以參考一下2018-08-08
完美解決Spring Boot前端的Access-Control-Allow-Origin跨域問題
這篇文章主要介紹了完美解決Spring Boot前端的Access-Control-Allow-Origin跨域問題,本文通過實例代碼給大家介紹的非常詳細，對大家的學(xué)習或工作具有一定的參考借鑒價值，需要的朋友可以參考下2023-05-05
java 實現(xiàn)單鏈表逆轉(zhuǎn)詳解及實例代碼
這篇文章主要介紹了java 實現(xiàn)單鏈表逆轉(zhuǎn)實例代碼的相關(guān)資料,需要的朋友可以參考下2017-02-02
這篇文章主要為大家詳細介紹了銀行家算法的java代碼實現(xiàn)，Swing寫的界面，文中示例代碼介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們可以參考一下2019-12-12
springboot內(nèi)置tomcat之NIO處理流程一覽
這篇文章主要介紹了springboot內(nèi)置tomcat之NIO處理流程，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教2021-12-12
這篇文章主要介紹了Spring源碼解析后置處理器梳理總結(jié)，在前面幾篇文章中梳理了Spring中bean的創(chuàng)建過程，在這個過程中各式各樣的后置處理器發(fā)揮了不同的作用，可以說后置處理器貫穿了bean的實例化以及初始化過程2022-07-07
Springboot Vue可配置調(diào)度任務(wù)實現(xiàn)示例詳解
這篇文章主要為大家介紹了Springboot Vue可配置調(diào)度任務(wù)實現(xiàn)示例詳解，有需要的朋友可以借鑒參考下，希望能夠有所幫助，祝大家多多進步，早日升職加薪2023-01-01
Java中注解@JsonFormat與@DateTimeFormat的使用
從數(shù)據(jù)庫獲取時間傳到前端進行展示的時候,我們有時候可能無法得到一個滿意的時間格式的時間日期,本文主要介紹了Java中注解@JsonFormat與@DateTimeFormat的使用,文中通過示例代碼介紹的非常詳細,需要的朋友們下面隨著小編來一起學(xué)習學(xué)習吧2023-08-08
這篇文章主要介紹了詳解在Spring中如何自動創(chuàng)建代理，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧2018-07-07