Redis保存对象的俩种方法详解

一、把对象转成Json

        //第一种		
                Jedis redis=RedisPool.getJedis();
		SysUser user=new SysUser();
		user.setName("ygc");
		user.setCode("123");
		String userInfo = JSON.toJSONString(user,SerializerFeature.WriteMapNullValue); 
		redis.set("userInfo", userInfo);
		String info=redis.get("userInfo");
		SysUser user1=JSONObject.parseObject(info,SysUser.class);
                System.out.println(user1.getName()+":第一种");

二、把对象转成byte[]

	//第二种
		redis.set("user".getBytes(),SerializeUtil.serialize(user1));
		SysUser user2=(SysUser) SerializeUtil.unSerialize(redis.get("user".getBytes()));
		System.err.println(user2.getName()+":第二种");

SerializeUtil 序列化工具

	/**
	 * 序列化
	 */
	public static byte[] serialize(Object obj) {
		ObjectOutputStream oos = null;
		ByteArrayOutputStream baos = null;
		try {
			// 序列化
			baos = new ByteArrayOutputStream();
			oos = new ObjectOutputStream(baos);

			oos.writeObject(obj);
			byte[] byteArray = baos.toByteArray();
			return byteArray;

		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
	/**
	 * 反序列化
	 * @param bytes
	 * @return
	 */
	public static Object unSerialize(byte[] bytes) {
		ByteArrayInputStream bais = null;
		try {
			// 反序列化为对象
			bais = new ByteArrayInputStream(bytes);
			ObjectInputStream ois = new ObjectInputStream(bais);
			return ois.readObject();

		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

完整版测试代码

package com.kero99.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.kero99.pojo.SysUser;

import redis.clients.jedis.Jedis;
/**
 * redis存对象
 * @author ygc
 *
 */
public class SerializeUtil {
	/**
	 * 序列化
	 */
	public static byte[] serialize(Object obj) {
		ObjectOutputStream oos = null;
		ByteArrayOutputStream baos = null;
		try {
			// 序列化
			baos = new ByteArrayOutputStream();
			oos = new ObjectOutputStream(baos);

			oos.writeObject(obj);
			byte[] byteArray = baos.toByteArray();
			return byteArray;

		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
	/**
	 * 反序列化
	 * @param bytes
	 * @return
	 */
	public static Object unSerialize(byte[] bytes) {
		ByteArrayInputStream bais = null;
		try {
			// 反序列化为对象
			bais = new ByteArrayInputStream(bytes);
			ObjectInputStream ois = new ObjectInputStream(bais);
			return ois.readObject();

		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
	public static void main(String[] args) {
		Jedis redis=RedisPool.getJedis();
		SysUser user=new SysUser();
		user.setName("ygc");
		user.setCode("123");
		//第一种
		String userInfo = JSON.toJSONString(user,SerializerFeature.WriteMapNullValue); 
		redis.set("userInfo", userInfo);
		String info=redis.get("userInfo");
		SysUser user1=JSONObject.parseObject(info,SysUser.class);
        System.out.println(user1.getName()+":第一种");

		//第二种
		redis.set("user".getBytes(),SerializeUtil.serialize(user1));
		SysUser user2=(SysUser) SerializeUtil.unSerialize(redis.get("user".getBytes()));
		System.err.println(user2.getName()+":第二种");
	}
}