spring-boot rabbitMq 完整项目搭建，包括创建、发送、监听

写在开始

rabbitMq 代码按照三部分介绍

第一部分 交换机和队列的创建

第二部分 消息发送

第三部分 消息监听

第一部分

1 建立queue

2 建立exchange

3 exchange绑定queue

建立之前需要配置两样东西

一个是rabbitMq的连接工厂(ConnectionFactory)、另外一个是操作句柄(RabbitAdmin)。可以看到连接工厂是给操作句柄初始化时使用的。

后续创建队列等一系列操作都需要使用到操作句柄，如果没有使用的话操作被视为无效。

　　 // 初始化连接
    @Bean
    public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory("127.0.0.1", 5672);
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        return connectionFactory;
    }

    // 队列操作配置
    @Bean
    public RabbitAdmin rabbitAdmin(ConnectionFactory connectionFactory) {
        return new RabbitAdmin(connectionFactory);
    }

开始建立队列

    public final static String QUEUE_NAME = "tianmh-queue";
    public final static String QUEUE_NAME2 = "tianmh-queue2";

    @Autowired
    private RabbitAdmin rabbitAdmin;

    // 创建队列1
    @Bean(value = QUEUE_NAME)
    public Queue queue() {
        Queue queue = new Queue(QUEUE_NAME, true, true, true);
        this.rabbitAdmin.declareQueue(queue);
        return queue;
    }

    // 创建队列2
    @Bean(value = QUEUE_NAME2)
    public Queue queue2() {
        Queue queue = new Queue(QUEUE_NAME2, true, true, true);
        this.rabbitAdmin.declareQueue(queue);
        return queue;
    }

建立交换机。下面例子建立的队列为广播类型队列

    // 创建一个 Fanout 类型的交换器
    @Bean(value = EXCHANGE_NAME)
    public Exchange exchange() {
        Exchange exchange = new FanoutExchange(EXCHANGE_NAME, true, true);
        this.rabbitAdmin.declareExchange(exchange);
        return exchange;
    }

交换机绑定队列

　　 // 使用路由键（routingKey）把队列（Queue）绑定到交换器（Exchange）
    @Bean
    public Binding binding(@Qualifier(QUEUE_NAME) Queue queue, @Qualifier(EXCHANGE_NAME) Exchange exchange) {
        Binding binding = new Binding(queue.getName(), Binding.DestinationType.QUEUE, exchange.getName(), ROUTING_KEY, null);
        this.rabbitAdmin.declareBinding(binding);
        return binding;
    }

    // 使用路由键（routingKey）把队列（Queue）绑定到交换器（Exchange）
    @Bean
    public Binding binding2(@Qualifier(QUEUE_NAME2) Queue queue, @Qualifier(EXCHANGE_NAME) Exchange exchange) {
        Binding binding = new Binding(queue.getName(), Binding.DestinationType.QUEUE, exchange.getName(), ROUTING_KEY, null);
        this.rabbitAdmin.declareBinding(binding);
        return binding;
    }

第二部分 消息发送

消息发送需指定发送到的exchangeName及routeKey及内容

@Component
public class SenderDemo {
    @Autowired
    RabbitTemplate rabbitTemplate;

    @PostConstruct
    public void testSender() {
        TestCommand command = new TestCommand();
        command.setKey("testContent");
        byte[] content = JSONObject.toJSONBytes(command);
        MessageProperties messageProperties = new MessageProperties();
        messageProperties.setTimestamp(new Date());
        messageProperties.setContentType(MessageProperties.CONTENT_TYPE_JSON);
        Message message = new Message(content, messageProperties);
        rabbitTemplate.send(RabbitMqConfig.EXCHANGE_NAME, "log", message);
    }
}

第三部分 消息监听

接收消息是通过监听队列实现的

@RabbitListener(queues = RabbitMqConfig.QUEUE_NAME)
    public void process(Message message) {
        TestCommand command = JSON.parseObject(new String(message.getBody()), TestCommand.class);
        logger.info("接收处理队列[{}]的消息[{}]", RabbitMqConfig.QUEUE_NAME, command.toString());
    }

就此一个完整的RabbitMqDemo搭建完成

附带项目POM

<?xml version="1.0" encoding="UTF-8"?>
<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.example</groupId>
    <artifactId>rabbitmq</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>rabbitmq</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

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

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

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>