• SpringBoot集成RabbitMQ并实现消息确认机制

    RabbitMQ安装请参照RabbitMQ应用

    不啰嗦直接上代码

    目录结构如下：


    pom.xml

    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>com.test</groupId>
	<artifactId>RabbitMQ_MQTT</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>RabbitMQ_MQTT</name>
	<url>http://maven.apache.org</url>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.6.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-amqp</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<!-- <dependency> <groupId>org.fusesource.mqtt-client</groupId> <artifactId>mqtt-client</artifactId> 
			<version>1.12</version> </dependency> -->
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<fork>true</fork>
				</configuration>
			</plugin>
		</plugins>
	</build>


</project>

    application.properties

    servier.port=8080


spring.rabbitmq.queues=topic.1,mqtt.test.*,mqtt.test.dd
spring.rabbitmq.host=127.0.0.1
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.publisher-confirms=true
spring.rabbitmq.virtual-host=/

    Application.java

    package com.gm;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.gm.rabbit.CallBackSender;

@Configuration
@RestController  
@EnableAutoConfiguration  
@ComponentScan
@SpringBootApplication
public class Application {

	@Autowired
	private CallBackSender sender;

	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}

	 @RequestMapping("/callback")
	public void callbak() {
		sender.send("topic.baqgl.admin.1", "测试消息");
	}
}

    RabbitConfig.java

    package com.gm.rabbit;

import java.util.ArrayList;
import java.util.List;

import org.springframework.amqp.core.AcknowledgeMode;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.ChannelAwareMessageListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;

@Configuration
public class RabbitConfig {

	@Value("${spring.rabbitmq.host}")
	private String addresses;

	@Value("${spring.rabbitmq.port}")
	private String port;

	@Value("${spring.rabbitmq.username}")
	private String username;

	@Value("${spring.rabbitmq.password}")
	private String password;

	@Value("${spring.rabbitmq.virtual-host}")
	private String virtualHost;

	@Value("${spring.rabbitmq.publisher-confirms}")
	private boolean publisherConfirms;

	@Value("${spring.rabbitmq.queues}")
	private String queues;

	final static String EXCHANGE_NAME = "amq.topic";
	final static String QUEUE_NAME = "topic.baqgl.*.*";
	final static String ROUTING_KEY = "topic.baqgl.#";

	@Bean
	public ConnectionFactory connectionFactory() {

		CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
		connectionFactory.setAddresses(addresses + ":" + port);
		connectionFactory.setUsername(username);
		connectionFactory.setPassword(password);
		connectionFactory.setVirtualHost(virtualHost);
		/** 如果要进行消息回调，则这里必须要设置为true */
		connectionFactory.setPublisherConfirms(publisherConfirms);
		return connectionFactory;
	}

	@Bean
	/** 因为要设置回调类，所以应是prototype类型，如果是singleton类型，则回调类为最后一次设置 */
	@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
	public RabbitTemplate rabbitTemplate() {
		RabbitTemplate template = new RabbitTemplate(connectionFactory());
		return template;
	}

	@Bean
	TopicExchange exchange() {
		return new TopicExchange(EXCHANGE_NAME);
	}

	@Bean
	public Queue queue() {
		return new Queue(QUEUE_NAME, true);
	}

	@Bean
	public Binding binding() {
		return BindingBuilder.bind(queue()).to(exchange()).with(ROUTING_KEY);
	}
	

	@Bean
	public SimpleMessageListenerContainer messageContainer() {
		/*Queue[] q = new Queue[queues.split(",").length];
		for (int i = 0; i < queues.split(",").length; i++) {
			q[i] = new Queue(queues.split(",")[i]);
		}*/
		SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(connectionFactory());
		container.setQueues(queue());
		container.setExposeListenerChannel(true);
		container.setMaxConcurrentConsumers(1);
		container.setConcurrentConsumers(1);
		container.setAcknowledgeMode(AcknowledgeMode.MANUAL);
		container.setMessageListener(new ChannelAwareMessageListener() {

			public void onMessage(Message message, com.rabbitmq.client.Channel channel) throws Exception {
				try {
					System.out.println(
							"消费端接收到消息:" + message.getMessageProperties() + ":" + new String(message.getBody()));
					System.out.println("topic:"+message.getMessageProperties().getReceivedRoutingKey());
					// deliveryTag是消息传送的次数，我这里是为了让消息队列的第一个消息到达的时候抛出异常，处理异常让消息重新回到队列，然后再次抛出异常，处理异常拒绝让消息重回队列
					/*if (message.getMessageProperties().getDeliveryTag() == 1
							|| message.getMessageProperties().getDeliveryTag() == 2) {
						throw new Exception();
					}*/

					channel.basicAck(message.getMessageProperties().getDeliveryTag(), false); // false只确认当前一个消息收到，true确认所有consumer获得的消息
				} catch (Exception e) {
					e.printStackTrace();

					if (message.getMessageProperties().getRedelivered()) {
						System.out.println("消息已重复处理失败,拒绝再次接收...");
						channel.basicReject(message.getMessageProperties().getDeliveryTag(), true); // 拒绝消息
					} else {
						System.out.println("消息即将再次返回队列处理...");
						channel.basicNack(message.getMessageProperties().getDeliveryTag(), false, true); // requeue为是否重新回到队列
					}
				}
			}
		});
		return container;
	}

}

    CallBackSender.java

    package com.gm.rabbit;

import java.util.UUID;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.support.CorrelationData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class CallBackSender implements RabbitTemplate.ConfirmCallback {
	@Autowired
	private RabbitTemplate rabbitTemplate;

	public void send(String topic, String message) {
		rabbitTemplate.setConfirmCallback(this);
		CorrelationData correlationData = new CorrelationData(UUID.randomUUID().toString());
		
		System.out.println("消息id:" + correlationData.getId());
		//用RabbitMQ发送MQTT需将exchange配置为amq.topic
		this.rabbitTemplate.convertAndSend("amq.topic", topic, message, correlationData);
	}

	public void confirm(CorrelationData correlationData, boolean ack, String cause) {
		System.out.println("消息id:" + correlationData.getId());
		if (ack) {
			System.out.println("消息发送确认成功");
		} else {
			System.out.println("消息发送确认失败:" + cause);
		}
	}
}

    ApplicationTests.java

    package com.gm;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApplicationTests {

	@Test
	public void contextLoads() {
		System.out.println("hello world");
	}

}

    TopicTest.java

    package com.gm.rabbit;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class TopicTest {

	@Autowired
	private CallBackSender sender;

	@Test
	public void topic() throws Exception {
		sender.send("topic.baqgl.admin.1", "测试消息");
	}
}
    本文选择的是RabbitMQ集成MQTT，并实现消息持久化，如不需要集成MQTT只需修改RabbitConfig.java中的EXCHANGE_NAME即可。
    集成MQTT相关配置：
    创建用户：
    创建账号
rabbitmqctl add_user admin 123456
设置用户角色
rabbitmqctl  set_user_tags  admin  administrator
设置用户权限
rabbitmqctl set_permissions -p "/" admin ".*" ".*" ".*"
设置完成后可以查看当前用户和角色(需要开启服务)
rabbitmqctl list_users

    安装插件：

    rabbitmq-plugins enable rabbitmq_management  
rabbitmq-plugins enable rabbitmq_mqtt

    默认配置。window下，rabbitmq的配置文件在C:UsersAdministratorAppDataRoamingRabbitMQ下。没配置的情况下，采用如下配置：

    [{rabbit,        [{tcp_listeners,    [5672]}]},  
 {rabbitmq_mqtt, [{default_user,     <<"admin">>},  
                  {default_pass,     <<"123456">>},  
                  {allow_anonymous,  true},  
                  {vhost,            <<"/">>},  
                  {exchange,         <<"amq.topic">>},  
                  {subscription_ttl, 1800000},  
                  {prefetch,         10},  
                  {ssl_listeners,    []},  
                  %% Default MQTT with TLS port is 8883  
                  %% {ssl_listeners,    [8883]}  
                  {tcp_listeners,    [1883]},  
                  {tcp_listen_options, [{backlog,   128},  
                                        {nodelay,   true}]}]}  
].

    更多说明请参照官方文档：http://www.rabbitmq.com/mqtt.html
  • 相关阅读:
    defineProperty的使用
    js题库全集
    如何将多个文件夹中的文件合并到一个文件夹中
    CYQ.Data V5 MDataTable 专属篇介绍
    读取和写入配置文件内容的方法
    面对代码中过多的if...else的解决方法
    SQL语句--删除掉重复项只保留一条
    获取当前时间
    Stopwatch 类用于计算程序运行时间
    正则表达式手册
  • 原文地址：https://www.cnblogs.com/gmhappy/p/9472420.html
Copyright © 2020-2023  润新知