rabbitmq动态创建exchange与队列

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rabbitmq配置

实例代码

package com.bkjk.message.config;

import lombok.Data;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * 链接管理
 * @author kiven·ing
 */

@ConfigurationProperties(prefix = "spring.rabbitmq")
@Data
@Configuration
public class RabbitConnectConfig {

    String host;
    String port;
    String username;
    String password;


    @Bean("mqConnectionFactory")
    public ConnectionFactory mqConnectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);
        connectionFactory.setVirtualHost("/");
        connectionFactory.setPublisherConfirms(true);
        /**
         * 设置通道数量
         */
        connectionFactory.setChannelCacheSize(40);

        //该方法配置多个host，在当前连接host down掉的时候会自动去重连后面的host
        connectionFactory.setAddresses(host);
        return connectionFactory;
    }

    @Bean
    public RabbitAdmin rabbitAdmin( ) {

        return new RabbitAdmin(mqConnectionFactory());
    }
}

创建队列

@Component
public class MessageManager {
   private static final String DELAY_ROU = "_delay";
    private static final Integer DELAY_DUTATION = 1000;
    @Resource
    RabbitAdmin rabbitAdmin;


    @Resource
    private RabbitTemplate rabbitTemplate;

 ## 配置发送格式
    @Bean
    public AmqpTemplate amqpTemplate() {

        //使用jackson 消息转换器
        rabbitTemplate.setMessageConverter(new Jackson2JsonMessageConverter());
        rabbitTemplate.setEncoding("UTF-8");

        // 开启returncallback
        rabbitTemplate.setMandatory(true);
        rabbitTemplate.setReturnCallback((message, replyCode, replyText, exchange, routingKey) -> {
            String correlationId = message.getMessageProperties().getCorrelationIdString();
            logger.info("消息：{} 发送失败, 应答码：{} 原因：{} 交换机: {}  路由键: {}", correlationId, replyCode, replyText, exchange, routingKey);
        });

        //  消息确认  yml 需要配置
        rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> {
            if (ack) {
                logger.info("消息发送到exchange成功");
            } else {
                logger.info("消息发送到exchange失败,原因: {}", cause);
            }
        });
        return rabbitTemplate;
    }

## 创建动态队列与交换机


    /**
     * 发送延迟消息
     * @param object
     * @param delayTime
     */
    public void createQueueAndSend( MessagePo object,Integer delayTime)  throws AmqpException {

        DirectExchange exchange = createExchange(rabbitConfig.getExchange() + DELAY_ROU);
        addExchange(exchange);
        String delayQueueName = rabbitConfig.getDelay() + "_" + delayTime;
        Queue delayQueue = createDelayQueue(delayQueueName, delayTime );
        addQueue(delayQueue);
        addBinding(delayQueue, exchange, delayQueueName);

        rabbitTemplate.convertAndSend(delayQueueName,object,new CorrelationData(object.getTag()));

    }

    /**
     * 根据发送延迟消息
     * @param object
     * @param secondDelayTime 单位秒
     */
    public void sendDelayMessage( MessagePo object,Integer secondDelayTime) throws AmqpException {

        String queueSerial = NotifyDailyEnum.getDescByCode(secondDelayTime);
        if (StringUtils.isNoneBlank(queueSerial)) {
            String delayQueueName = rabbitConfig.getDelay() + "_" + queueSerial;
            rabbitTemplate.convertAndSend(delayQueueName, object,new CorrelationData(object.getTag()));
        } else {
            createQueueAndSend(object, secondDelayTime * DELAY_DUTATION);
        }

    }

    /**
     * 根据que 和rout发送消息
     * @param routingKey
     * @param object
     */
    public  void sendQueueMessage(String routingKey, MessagePo object){

        rabbitTemplate.convertAndSend(routingKey,object,new CorrelationData(object.getTag()));
    }

    /**
     * 根据exhange 和rout发送
     * @param exchange
     * @param routingKey
     * @param object
     */
    public  void sentExchangeMessage(String exchange, String routingKey, Object object){

        rabbitTemplate.convertAndSend(exchange,routingKey,object);
    }

    /**
     * 创建Exchange
     *
     * @param exchange
     */
    private void addExchange(AbstractExchange exchange) {
        rabbitAdmin.declareExchange(exchange);
    }


    /**
     * 创建一个指定的Queue
     *
     * @param queue
     * @return queueName
     */
    private String addQueue(Queue queue) {
        return rabbitAdmin.declareQueue(queue);
    }

    /**
     * 绑定一个队列到一个匹配型交换器使用一个routingKey
     *
     * @param queue
     * @param exchange
     * @param routingKey
     */
    private void addBinding(Queue queue, DirectExchange exchange, String routingKey) {
        Binding binding = BindingBuilder.bind(queue).to(exchange).with(routingKey);
        rabbitAdmin.declareBinding(binding);
    }


    private Queue createDelayQueue(String queueName, Integer delayMillis) {
        /**
         * 队列名称  //死信时间 ,死信重新投递的交换机 ,路由到队列的routingKey
         */
        return QueueBuilder.durable(queueName)
                .withArgument("x-message-ttl", delayMillis)
                .withArgument("x-expires", delayMillis * DELAY_LIFE) //设置队列自动删除时间
                .withArgument("x-dead-letter-exchange", rabbitConfig.getExchange())
                .withArgument("x-dead-letter-routing-key", rabbitConfig.getQueue())
                .build();
    }

    /**
     * 创建不删除的队列
     * @param queueName
     * @param delayMillis
     * @return
     */
    private Queue createDelayQueueNoDelete(String queueName, Integer delayMillis) {
        /**
         * 队列名称  //死信时间 ,死信重新投递的交换机 ,路由到队列的routingKey
         */
        return QueueBuilder.durable(queueName)
                .withArgument("x-message-ttl", delayMillis)
                .withArgument("x-dead-letter-exchange", rabbitConfig.getExchange())
                .withArgument("x-dead-letter-routing-key", rabbitConfig.getQueue())
                .build();
    }


    private DirectExchange createExchange(String exchangeName) {
        return new DirectExchange(exchangeName, true, false);
    }