SpringCache整合redis时，@CacheEvict , allEntries = true无效问题

SpringCache整合redis时，使用，发现缓存并没有删除

@CacheEvict(value = "ParkConfig",allEntries = true)

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查看源代码CacheAspectSupport，这里调用的是doClear方法

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查看doClear方法

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这里调用了cache的clear方法，我们这里整合的REDIS，看一下redis的实现类

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RedisCache.clear调用了cacheWriter的clean方法

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打开DefaultRedisCacheWriter.clean 方法.DEBUG一下

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debug发现 pattern这个变量和redis客户端里面的键不一致，命令也获取不到任何数据

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改成相应的键可以

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原因：由于redis被多个程序使用，所以我们在使用redis的时候给所有缓存都添加了一个前缀，而clear方法是直接使用的connect对象，在使用键的时候没有根据这个情况进行序列化键，

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要解决这个问题也很简单，DefaultRedisCacheWriter不允许继承，写一个代理类，修改clean方法

package cn.akeparking.middleware.cache.redis;

import org.springframework.data.redis.cache.RedisCacheWriter;

import java.time.Duration;

/**
 * @Description
 * @Author Mahz
 * @Date2021/8/18 14:16
 **/
public class MiddlewareRedisCacheWriterProxy implements RedisCacheWriter {

    RedisCacheWriter redisCacheWriter;

    MiddlewareKeySerializer middlewareKeySerializer;

    public MiddlewareRedisCacheWriterProxy(RedisCacheWriter redisCacheWriter, MiddlewareKeySerializer middlewareKeySerializer) {
        this.redisCacheWriter = redisCacheWriter;
        this.middlewareKeySerializer = middlewareKeySerializer;
    }

    @Override
    public void put(String name, byte[] key, byte[] value, Duration ttl) {
        redisCacheWriter.put(name, key, value, ttl);
    }

    @Override
    public byte[] get(String name, byte[] key) {
        return redisCacheWriter.get(name, key);
    }

    @Override
    public byte[] putIfAbsent(String name, byte[] key, byte[] value, Duration ttl) {
        return redisCacheWriter.putIfAbsent(name, key, value, ttl);
    }

    @Override
    public void remove(String name, byte[] key) {
        redisCacheWriter.remove(name, key);
    }

    @Override
    public void clean(String name, byte[] pattern) {
        pattern = middlewareKeySerializer.serialize(new String(pattern));
        redisCacheWriter.clean(name, pattern);
    }
}

        //初始化一个RedisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);

        MiddlewareRedisCacheWriterProxy middlewareRedisCacheWriterProxy = new MiddlewareRedisCacheWriterProxy(redisCacheWriter,KeySerializer());


        RedisTemplate redisTemplate = redisTemplate(connectionFactory);
        RedisSerializationContext.SerializationPair