Redis实现消息中间件的使用

Redis实现消息中间件的使用

参考原文：Springboot+Redis实现消息队列（发布订阅模式）_geomon的博客-CSDN博客_redis发布订阅springboot

RedisTemplate取值多双引号问题_懒无止境的博客-CSDN博客_redistemplate带双引号

实现：

1、config

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.nz.authcenter.pojo.redis.RedisTopic;
import com.nz.authcenter.serviceImpl.ReceiverRedisMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.adapter.MessageListenerAdapter;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;

import java.util.concurrent.CountDownLatch;
@Configuration
public class RedisMessageListener {

    
    @Bean
    public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
                                                   MessageListenerAdapter listenerAdapter, MessageListenerAdapter listenerAdapterTest2){
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        //接受消息的key
        container.addMessageListener(listenerAdapter, new PatternTopic(RedisTopic.PROJECT_FOCUS));
        container.addMessageListener(listenerAdapterTest2, new PatternTopic("phoneTest2"));
        return container;
    }


    
    @Bean
    public MessageListenerAdapter listenerAdapter(ReceiverRedisMessage  receiver){
        return new MessageListenerAdapter(receiver,"projectFocusReceiver");
    }
    
    @Bean
    public MessageListenerAdapter listenerAdapterTest2(ReceiverRedisMessage receiver){
        return new MessageListenerAdapter(receiver,"receiveMessage2");
    }
    
    @Bean
    ReceiverRedisMessage receiver(CountDownLatch latch) {
        return new ReceiverRedisMessage(latch);
    }


    
    @Bean
    public CountDownLatch latch(){
        return new CountDownLatch(1);//指定了计数的次数 1
    }


    
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate template = new RedisTemplate();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(stringRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(stringRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }


}

2、消费

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.nz.authcenter.pojo.project.ProjectFocus;
import com.nz.authcenter.pojo.redis.RedisTopic;
import com.nz.authcenter.service.project.ProjectFocusService;
import com.nz.authcenter.utils.AllUtils;
import com.nz.authcenter.utils.JsonUtil;
import com.nz.authcenter.utils.Result;
import net.sf.json.JSONString;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
 

public class ReceiverRedisMessage {
    private static final Logger log = LoggerFactory.getLogger(ReceiverRedisMessage.class);
    private CountDownLatch latch;
 
    @Autowired
    public ReceiverRedisMessage(CountDownLatch latch) {
        this.latch = latch;
    }
    @Autowired
    private 业务Service 业务Service;
 
 
    
    public void projectFocusReceiver(String jsonMsg) {
        log.info(new Date() + "-- [开始消费REDIS消息队列"+ RedisTopic.PROJECT_FOCUS +"数据] ：" + jsonMsg);
        try {
            ...业务逻辑
        } catch (Exception e) {
            e.printStackTrace();
            log.error("[消费REDIS消息队列projectFocus数据失败，失败信息:{"+ e.getMessage() +"}]");
        }
        latch.countDown();
    }
 
    
    public void receiveMessage2(String jsonMsg) {
        log.info("[开始消费REDIS消息队列phoneTest2数据...]");
        try {
            System.out.println(jsonMsg);
            
 
            log.info("[消费REDIS消息队列phoneTest2数据成功.]");
        } catch (Exception e) {
            log.error("[消费REDIS消息队列phoneTest2数据失败，失败信息:{}]", e.getMessage());
        }
        latch.countDown();
    }
 
}