RedisUtil

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package com.jianfeitech.utils;

import java.util.Set;

import org.apache.log4j.Logger;

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

import com.jianfeitech.constants.AdConstants;

/**
 * 
 * Redis 工具类。
 * 
 * @author wjxie
 *
 */
public class RedisUtil {

    private static Logger logger = Logger.getLogger(RedisUtil.class);

    private static JedisPool pool;

    static {
        pool = new JedisPool(new JedisPoolConfig(), AdConstants.REDIS_URL);
    }

    public static String get(String key) {
        Jedis jedis = getJedis();
        try {
            String result = jedis.get(key);
            pool.returnResource(jedis);
            return result;
        } catch (Exception e) {
            logger.error("", e);
            pool.returnBrokenResource(jedis);
            return null;
        }
    }

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

    public static Long incr(String key) {
        Jedis jedis = getJedis();
        try {
            Long result = jedis.incr(key);
            pool.returnResource(jedis);
            return result;
        } catch (Exception e) {
            logger.error("", e);
            pool.returnBrokenResource(jedis);
            return null;
        }
    }

    public static void deleteBatch(String pattern) {
        Jedis jedis = getJedis();
        try {
            Set keys = jedis.keys(pattern);
            if (keys != null && keys.size() > 0) {
                for (String key : keys) {
                    jedis.del(key);
                }
            }
            pool.returnResource(jedis);
        } catch (Exception e) {
            logger.error("", e);
            pool.returnBrokenResource(jedis);
        }
    }

    public static Long getLong(String key) {
        try {
            String result = get(key);
            return Long.valueOf(result);
        } catch (NumberFormatException e) {
            logger.debug("", e);
            return 0L;
        }
    }

    public static void setLong(String key, Long value) {
        String result = String.valueOf(value);
        set(key, result);
    }

    public static Jedis getJedis() {
        Jedis jedis = null;
        int count = 0;

        do {
            try {
                jedis = pool.getResource();
            } catch (Exception e) {
                logger.debug("", e);
                pool.returnBrokenResource(jedis);
            }
            count++;
        } while (jedis == null && count < 10000);

        if (jedis == null) {
            throw new RuntimeException("Fucking jedis config.");
        }
        return jedis;
    }

}