package com.sckw.redis.config.serializer;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.JSONWriter;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
 * fastJson序列化
 * @author xcq
 * @date 2022年06月14日 15:21
 */
public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {
    public static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;


    private final Class<T> clazz;

    public FastJson2JsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }

    /**
     * 序列化
     */
    @Override
    public byte[] serialize(T t) throws SerializationException {
        if (null == t) {
            return new byte[0];
        }
        return JSON.toJSONString(t, JSONWriter.Feature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    /**
     * 反序列化
     */
    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if (null == bytes || bytes.length == 0) {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);
        return (T) JSON.parseObject(str, clazz, JSONReader.Feature.SupportAutoType);
    }
}