springboot1.0的rabbitmq配置

1.首先理解下rabbitmq的基础概念（exchange和queue的关系）：

理解 RabbitMQ Exchange - 知乎

2.然后登陆服务器的rabbitmq管理页面：http://localhost:15672/#/

在管理页面新建exchange和绑定queue（虽然在程序中也可以）：

RabbitMQ 在 web 页面 创建 exchange, queue, routing key - huanggy - 博客园

3.新增rabbitmq配置文件，在yml或者properties里配置rabbitmq的登录信息：

package payment.utils.rabbitMq.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.SerializerMessageConverter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;

@Configuration
public class RabbitMqParamConfig {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    //初始化参数类

    @Value("${rabbitmq_host}")
    private String host;

    @Value("${rabbitmq_port}")
    private int port;

    @Value("${rabbitmq_username}")
    private String username;

    @Value("${rabbitmq_password}")
    private String password;
    //创建交换机 topic 模式

    public static final String EXCHANGE_A = "exchange_A";


    //创建队列
    //1.与日志服务交互队列
    public static final String QUEUE ="queue_notify";

    //routingKey
    public static final String ROUTINGKEY_A = "spring-boot-routingKey_A.#";

    @Bean
    public CachingConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host, port);
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);
        connectionFactory.setVirtualHost("/");
        connectionFactory.setPublisherConfirms(true);
        return connectionFactory;
    }

    //必须是prototype类型
    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
    public RabbitTemplate rabbitTemplate() {
        logger.info("开始构建RabbitTemplate");
        RabbitTemplate template = new RabbitTemplate(connectionFactory());
        template.setMandatory(true);
        template.setMessageConverter(new SerializerMessageConverter());
        return template;
    }
}

4.在pom文件里新增必要依赖：

 
     org.springframework.boot
     spring-boot-starter-amqp
 
 
     com.rabbitmq
     amqp-client
 

注意，若项目为springboot1.0的话，启动会报错

下面是我遇到的三个报错：

Could not autowire. No beans of 'RabbitTemplate' type found.

java.lang.ClassNotFoundException: com.rabbitmq.client.QueueingConsumer$Delivery

java.lang.ClassNotFoundException: com.rabbitmq.client.ShutdownListener

 这是因为pom里没有指定rabbitmq的版本导致的：

那版本是多少呢？点开spring-boot-starter-amqp，再点开spring-rabbit

 可见需要的版本为3.5.7，加上对应版本即可

 最后附上rabbit发送方代码：

CorrelationData correlationId = new CorrelationData(UUID.randomUUID().toString().replaceAll("-", "").toUpperCase());
rabbitTemplate.convertAndSend(EXCHANGE_A, ROUTINGKEY_A, jsonStr, correlationId);