Redis 存储字符串和对象

http://blog.csdn.net/abc19900828/article/details/40373549

 

1 测试类

 

import redis.clients.RedisClinet;

import redis.clients.SerializeUtil;

import redis.clients.jedis.Jedis;

public class Test {

      /**

      * Administrator

      * @param args

      */

      public static void main(String[] args) {

           

            // 操作单独的文本串

           Jedis redis= new Jedis( "10.2.31.38", 6379);

           

           redis.set( "key", "value");

           System. out.println(redis.get( "key"));

           System. out.println(redis.del( "key"));

           

            // 操作实体类对象

           Goods good= new Goods();  // 这个Goods实体我就不写了啊

           good.setName( "洗衣机" );

           good.setNum(400);

           good.setPrice(19l);

           redis.set( "good".getBytes(), SerializeUtil. serialize(good));

            byte[] value = redis.get( "good".getBytes());

           Object object = SerializeUtil. unserialize(value);           

            if(object!= null){

                Goods goods=(Goods) object;

                System. out.println(goods.getName());

                System. out.println(goods.getNum());

                System. out.println(goods.getPrice());

           }

           System. out.println(redis.del( "good".getBytes()));

           

            // 操作实体类对象2（实际上和上面是一样的）

           String key= "goods-key";

           Goods g= new Goods();

           g.setName( "电风扇--d" );

           g.setNum(200);

           String temp=RedisClinet. getInstance().set(g, key);

           System. out.println(temp);

           

           Object o=RedisClinet. getInstance().get(key);

            if(o!= null)

           {

                Goods g1=(Goods)o;

                System. out.println(g1.getName());

                System. out.println(g1.getNum());

           }

          System. out.println(RedisClinet. getInstance().del(key));

           

     }

}

2 RedisClinet 客户端类

package redis.clients;

import redis.clients.jedis.Jedis;

/**

 *

 * @author ajun

 *

 */

public class RedisClinet {

      private static final String ip= "10.2.31.38";

      private static final int port=6379;

      protected static RedisClinet redis = new RedisClinet ();

      protected static Jedis jedis = new Jedis( ip, port);;

      static {

           

     }

    protected RedisClinet(){

       System. out.println( " init Redis ");

    }

    public static RedisClinet getInstance()

    {

        return redis;

    }

   

    /**set Object*/

      public String set(Object object,String key)

     {

            return jedis.set(key.getBytes(), SerializeUtil.serialize(object));

     }

     

      /**get Object*/

      public Object get(String key)

     {

            byte[] value = jedis.get(key.getBytes());

            return SerializeUtil. unserialize(value);

     }

     

      /**delete a key**/

      public boolean del(String key)

     {

            return jedis.del(key.getBytes())>0;

     }

}

3 序列化工具类

/**

 *

 */

package redis.clients;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

/**

 * @author Administrator

 *

 */

public class SerializeUtil {

      public static byte[] serialize(Object object) {

           ObjectOutputStream oos = null;

            ByteArrayOutputStream baos = null;

            try {

                 // 序列化

                baos = new ByteArrayOutputStream();

                oos = new ObjectOutputStream(baos);

                oos.writeObject(object);

                 byte[] bytes = baos.toByteArray();

                 return bytes;

           } catch (Exception e) {

           }

            return null;

     }

      public static Object unserialize( byte[] bytes) {

           ByteArrayInputStream bais = null;

            try {

                 // 反序列化

                bais = new ByteArrayInputStream(bytes);

                ObjectInputStream ois = new ObjectInputStream(bais);

                 return ois.readObject();

           } catch (Exception e) {

           }

            return null;

     }

}