xujie-sys/src/main/java/com/xujie/sys/config/RedisConfig.java

 

package com.xujie.sys.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.redis.cache.CacheKeyPrefix;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.*;
import org.springframework.data.redis.listener.ChannelTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * Redis配置
 *
 *  
 */
@Configuration
@Slf4j
public class RedisConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        // value序列化方式采用jackson
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        return redisTemplate;
    }


    /**
     * spring redis 默认生成key方式,包含::号
     *
     * @param prefix the prefix
     * @param key    the key
     * @return string
     */
    public String simpleKeyGenerator(String prefix, String key) {
        return CacheKeyPrefix.simple().compute(prefix) + key;
    }

    /**
     * 创建Redis消息监听器
     *
     * @param connectionFactory
     * @return
     */
    @Bean
    @Primary
    public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }

    /**
     * 监听指定的库
     * 这个地方，我当初设置的是库是 1，我链接的库是 4
     * 但是最后Listener还是能收到其他库key过期的消息，不知道为啥。。。
     * 建议大家改成 * ，直接监听所有库哈。不过这样消息会变多哈。
     */
    @Bean
    public ChannelTopic expiredTopic() {
        return new ChannelTopic("__keyevent@*__:expired");
    }

    @Bean
    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForHash();
    }

    @Bean
    public ValueOperations<String, String> valueOperations(RedisTemplate<String, String> redisTemplate) {
        return redisTemplate.opsForValue();
    }

    @Bean
    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForList();
    }

    @Bean
    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForSet();
    }

    @Bean
    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForZSet();
    }
}