redis怎么存取一条数据 redis存取对象的几种方式

第一步：先创建redisUtil

package com.runtai.redis;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class RedisUtil {
	private static String ip="localhost";
	private static int port=6379;
	private static int timeout=10000;
	private static JedisPool pool=null;
	
	
	static{
		JedisPoolConfig config=new JedisPoolConfig();
		config.setMaxTotal(1024);//最大连接数
		config.setMaxIdle(200);//最大空闲实例数
		config.setMaxWaitMillis(10000);//等连接池给连接的最大时间，毫秒
		config.setTestOnBorrow(true);//borrow一个实例的时候，是否提前vaildate操作
		
		pool=new JedisPool(config,ip,port,timeout);
		
	}
	
	//得到redis连接
	public static Jedis getJedis(){
		if(pool!=null){
			return pool.getResource();
		}else{
			return null;
		}
	} 
	
	//关闭redis连接
	public static void close(final Jedis redis){
		if(redis != null){
			redis.close();
		}
	}
}

第二步：创建序列化工具SerializeUtil

package com.runtai.redis;

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

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;
	}
}

第三步：创建user实体类对象

package com.runtai.entity;

import java.io.Serializable;

//实现redis得继承Serializable接口进行序列化
public class User implements Serializable{
	//定义一个序列号
	private static final long serialVersionUID = 1L;
	
    private Integer id;

    private String name;
    
    private String password;
    
    private String headPhoto; //头像图片
    
    private String src; //头像图片
    
    private String kind;
    
    private String createTime;
    
    private Integer status;//1正常2删除

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public String getHeadPhoto() {
		return headPhoto;
	}

	public void setHeadPhoto(String headPhoto) {
		this.headPhoto = headPhoto;
	}

	public String getKind() {
		return kind;
	}

	public void setKind(String kind) {
		this.kind = kind;
	}

	public String getCreateTime() {
		return createTime;
	}

	public void setCreateTime(String createTime) {
		this.createTime = createTime;
	}

	public String getSrc() {
		return src;
	}

	public void setSrc(String src) {
		this.src = src;
	}

	public Integer getStatus() {
		return status;
	}

	public void setStatus(Integer status) {
		this.status = status;
	}
	
	
}

第四步：开始利用redis存取对象

@Test
	public void textRrdis() {  
		Jedis redis=RedisUtil.getJedis();
		//设置user对象
		User user =new User();
		user.setId(1);
		user.setName("小明");
		redis.del("luoxu");
		//把user对象序列化后存储进redis
		redis.set("user".getBytes(),SerializeUtil.serialize(user));
		
		//从redis取出user后，把user对象反序列化
		User user2=(User) SerializeUtil.unSerialize(redis.get("user".getBytes()));
		System.out.println(JSON.toJSON(user2));
	}