Save and read object in Jedis - Java Big Data

Java examples for Big Data:Jedis

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Description

Save and read object in Jedis

Demo Code

package allen.commons.redis.test;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import com.alibaba.fastjson.JSON;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class RedisTest {

    private static final Logger logger = LoggerFactory
            .getLogger(RedisTest.class);

    private static JedisPoolConfig jedisPoolConfig;

    private static Jedis jedis;

    private static Integer maxActive = 1000;

    private static Integer maxIdle = 20;

    private static Integer maxWait = 3000;

    private static String hostIp = "10.33.3.225";

    private static Integer port = 6379;

    private RedisTemplate redisTemplate;

    public static Jedis getJedis() {
        if (jedisPoolConfig == null) {
            jedisPoolConfig = new JedisPoolConfig();
            //jedisPoolConfig.setMaxActive(maxActive);
            jedisPoolConfig.setMaxTotal(maxActive);
            jedisPoolConfig.setMaxIdle(maxIdle);
            //jedisPoolConfig.setMaxWait(maxWait);
            jedisPoolConfig.setMaxWaitMillis(maxWait);
        }//  ww  w.j  a  v  a2 s.  co  m
        JedisPool jedisPool = new JedisPool(jedisPoolConfig, hostIp, port);
        jedis = jedisPool.getResource();
        return jedis;
    }

    public static void set(String key, Object value) {
        try {
            Jedis jedis = getJedis();
            jedis.set(key.getBytes(), serialize(value));
            logger.info("!!!");
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        } finally {
            //jedisPool.returnResource(jedis);
        }
    }

    @SuppressWarnings("unchecked")
    public String saveTestBean(TestBean1 test) {

        return (String) redisTemplate.execute(new RedisCallback<String>() {

            @Override
            public String doInRedis(RedisConnection connection)
                    throws DataAccessException {
                byte[] key = getKey(String.valueOf(test.getId()));
                byte[] value = com.alibaba.fastjson.JSON.toJSONString(test)
                        .getBytes();
                connection.set(key, value);
                return null;
            }
        });

    }

    public static void set(String key, String value) {
        try {
            Jedis jedis = getJedis();
            jedis.set(key, value);
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
    }

    public static Object get(String key) {
        Jedis jedis = getJedis();
        return null;
    }
    public static byte[] serialize(Object object) {
        ObjectOutputStream oos = null;
        ByteArrayOutputStream baos = null;
        try {
            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 {
            bais = new ByteArrayInputStream(bytes);
            ObjectInputStream ois = new ObjectInputStream(bais);
            return ois.readObject();
        } catch (Exception e) {

        }
        return null;
    }

    public TestBean1 getTestBean(Integer id, String name) {
        return TestBean1.getInstance(id, name);
    }

    public static byte[] getKey(String id) {
        return ("HQYG:Allen:test:" + id).getBytes();
    }

    public static void main(String[] args) {
        for (int i = 0; i < 100; i++) {
            Jedis jedis = getJedis();
            //jedis.set("allen", "aaa");

            TestBean1 test = TestBean1.getInstance(i, "allen");
            byte[] key = getKey(String.valueOf(test.getId()));
            byte[] value = JSON.toJSONString(test).getBytes();

            jedis.set(key, value);
        }
    }
}
class TestBean1 implements Serializable {

    private static final long serialVersionUID = -2730211713088606559L;

    private Integer id;
    private String name;

    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;
    }

    public static TestBean1 getInstance(Integer id, String name) {
        TestBean1 bean = new TestBean1();
        bean.setId(id);
        bean.setName(name);
        return bean;
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

}

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