2021-2-17 RabbitMq - java

引入maven

<!--整合rabbitmq-->
<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-amqp</artifactId>
 </dependency>

编写config

package com.qizhi.config;

import com.rabbitmq.client.AMQP;
import org.springframework.amqp.core.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitMqConfig {
    /*
    1. 创建 队列
    2. 创建交换机
    3. 绑定交换机和队列
     */

    public final static String ES_QUEUE="es_queue";

    public final static String ES_CHANGE="es_change";

    public final static String ES_BIND_KEY="es_change";

    @Bean
    public Queue queue(){
        return new Queue(ES_QUEUE);
    }

    @Bean
    public DirectExchange exchange(){
        return new DirectExchange(ES_CHANGE);
    }

    /**
     * 绑定交换机 队列与 密钥
     * @param queue
     * @param directExchange
     * @return
     */
    @Bean
    Binding binding(Queue queue,DirectExchange directExchange){
        return BindingBuilder.bind(queue).to(directExchange).with(ES_BIND_KEY);
    }
}

编写MqMessage

package com.qizhi.search.mode.mq;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class BookEsIndexMessage implements Serializable {
    /*
    创建， 修改 或者 删除
     */
    public final static String CREATE_OR_UPDATE="create_update";
    public final static String REMOVE="remove";


    private long id;

    private String type;

}

信息调控类 MqMessageHandle

• 用于监听发送到rabbitmq的消息

package com.qizhi.search.mode.mq;

import com.qizhi.config.RabbitMqConfig;
import com.qizhi.service.SearchService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
@Slf4j
@RabbitListener(queues = RabbitMqConfig.ES_QUEUE) //监听队列
public class MqMessageHandle {

    @Autowired
    SearchService searchService;
    
    @RabbitHandler
    public void handler(BookEsIndexMessage message) {

        log.info("mq 收到一条消息： {}", message.toString());

        switch (message.getType()) {
            case BookEsIndexMessage.CREATE_OR_UPDATE:
                searchService.createOrUpdate(message);
                break;
            case BookEsIndexMessage.REMOVE:
                searchService.removeIndex(message);
                break;
            default:
                log.error("没找到对应的消息类型，请注意！！ --》 {}", message.toString());
                break;
        }
    }
}