单机版 JedisUtil（{基本操作封装工具类}）

Posted 2021-02-02 mlq2017

<!--集成的RedisJAR-->
<!--引入jedis需的jar包-->
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version>
</dependency>
<!--Spring整合jedis的依赖-->
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>1.7.1.RELEASE</version>
</dependency>

package com.dsj.gdbd.utils.jedis;

import com.dsj.gdbd.utils.serialize.SerializingUtil;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.InitializingBean;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

import javax.annotation.PostConstruct;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class JedisUtil implements InitializingBean {
    private static JedisPool pool = null;
    /**
     * 默认缓存时间
     */
    private static final int DEFAULT_CACHE_SECONDS = 0;// 单位秒 设置成一个钟
    private static Logger LOGGER = Logger.getLogger(JedisUtil.class);


    public static JedisPool getPool() {
        return pool;
    }

    @PostConstruct
    public void init() {

        if (pool == null) {
            JedisPoolConfig config = new JedisPoolConfig();
            config.setMaxTotal(10000);
            config.setMaxIdle(1000);
            config.setMaxWaitMillis(1000 * 10);

            //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
            config.setTestOnBorrow(true);
            pool = new JedisPool(config, "192.168.31.206", 6379, 10000);
        }
    }

    public synchronized static Jedis getResource() {
        if (pool == null) {
            pool = getPool();
        }
        return pool.getResource();
    }


    public static void closeRedis(Jedis redis) {
        if (redis != null) {
            redis.close();
        }
    }

    public static void set(String key, String value) {
        Jedis redis = getResource();
        try {
            redis.set(key, value);
        } finally {
            closeRedis(redis);
        }
    }

    public static void set(Object key, Object value) {
        Jedis redis = getResource();
        try {
            redis.set(SerializingUtil.serialize(key), SerializingUtil.serialize(value));
        } finally {
            closeRedis(redis);
        }
    }
    public static String get(String key) {
        Jedis redis = getResource();
        try {
            return redis.get(key);
        } finally {
            closeRedis(redis);
        }
    }

    /**
     * 根据缓存键获取Redis缓存中的值.<br/>
     *
     * @param key 键.<br/>
     * @return Object .<br/>
     * @throws Exception
     */
    public static Object get(Object key) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            byte[] obj = jedis.get(SerializingUtil.serialize(key));
            return obj == null ? null : SerializingUtil.deserialize(obj);
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return null;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 根据缓存键获取Redis缓存中的值.<br/>
     *
     * @param key 键.<br/>
     * @return Object .<br/>
     * @throws Exception
     */
    public static Object getObj(String key) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            byte[] obj = jedis.get(SerializingUtil.serialize(key));
            return obj == null ? null : SerializingUtil.deserialize(obj);
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return null;
        } finally {
            closeRedis(jedis);
        }
    }


    /**
     * 根据缓存键获取Redis缓存中的值.<br/>
     *
     * @param key 键.<br/>
     * @return Object .<br/>
     * @throws Exception
     */
    public static String getStr(String key) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            return jedis.get(key);

        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return null;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 根据缓存键获取Redis缓存中的值.<br/>
     *
     * @param key 键.<br/>
     * @return Object .<br/>
     * @throws Exception
     */
    public static byte[] get(byte[] obj) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            return jedis.get(obj);
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return null;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 判断一个key是否存在
     *
     * @param key
     * @return
     */
    public static Boolean exists(Object key) {
        Jedis jedis = null;
        Boolean result = false;
        try {
            jedis = getResource();
            return jedis.exists(SerializingUtil.serialize(key));
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return false;
        } finally {
            closeRedis(jedis);
        }
    }

    public static Boolean existsKey(String key) {
        Jedis jedis = null;
        Boolean result = false;
        try {
            jedis = getResource();
            return jedis.exists(key);
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return false;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 根据缓存键清除Redis缓存中的值.<br/>
     *
     * @param keys
     * @return
     * @throws Exception
     */
    public static Boolean del(Object... keys) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            jedis.del(SerializingUtil.serialize(keys));
            return true;
        } catch (Exception e) {
            LOGGER.error("Cache删除失败：" + e);
            return false;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 根据缓存键清除Redis缓存中的值.<br/>
     *
     * @param keys
     * @return
     * @throws Exception
     */
    public static Long del(String... keys) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            jedis.del(keys);
            return jedis.del(keys);
        } catch (Exception e) {
            LOGGER.error("Cache删除失败：" + e);
            return 0l;
        } finally {
            closeRedis(jedis);
        }
    }

    /**
     * 保存一个对象到Redis中(缓存过期时间:使用此工具类中的默认时间) . <br/>
     *
     * @param key    键 . <br/>
     * @param object 缓存对象 . <br/>
     * @return true or false . <br/>
     * @throws Exception
     */
    public static Boolean save(Object key, Object object) {
        return save(key, object, DEFAULT_CACHE_SECONDS);
    }

    /**
     * 保存一个对象到redis中并指定过期时间
     *
     * @param key     键 . <br/>
     * @param object  缓存对象 . <br/>
     * @param seconds 过期时间（单位为秒）.<br/>
     * @return true or false .
     */
    public static Boolean save(Object key, Object object, int seconds) {
        Jedis jedis = null;
        try {
            jedis = getResource();
            jedis.set(SerializingUtil.serialize(key), SerializingUtil.serialize(object));
            jedis.expire(SerializingUtil.serialize(key), seconds);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            LOGGER.error("Cache保存失败：" + e);
            return false;
        } finally {
            closeRedis(jedis);
        }
    }
    /**
     * 删除Redis中的所有key
     *
     * @throws Exception
     */
    public static void flushAll() {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            jedis.flushAll();
        } catch (Exception e) {
            LOGGER.error("Cache清空失败：" + e);
        } finally {
            closeRedis(jedis);
        }
    }
    /**
     * 获取list
     *
     * @param <T>
     * @param key
     * @return list
     */
    public static <T> Map<String, T> getMap(String key) throws Exception {
        if (getResource() == null || !getResource().exists(key.getBytes())) {
            return null;
        }
        byte[] in = getResource().get(key.getBytes());
        return (Map<String, T>) SerializingUtil.deserialize(in);
    }
    /**
     * 设置 map
     *
     * @param <T>
     * @param key
     */
    public static <T> void setMap(String key, Map<String, T> map) {
        try {
            getResource().set(key.getBytes(), SerializingUtil.serialize(map));
        } catch (Exception e) {
            LOGGER.warn("Set key error : " + e);
        }
    }
    public static Long dbSize() {
        Jedis jedis = null;
        Long size = 0l;
        try {
            jedis = pool.getResource();
            size = jedis.dbSize();
        } catch (Exception e) {
            LOGGER.error("查询库异常：" + e);
        } finally {
            closeRedis(jedis);
        }
        return size;
    }

    public static Set<String> keys(String pattern) {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            Set<String> allKey = jedis.keys("*" + pattern + "*");
            return allKey;
        } catch (Exception e) {
            LOGGER.error("Cache获取失败：" + e);
            return new HashSet<String>();
        } finally {
            closeRedis(jedis);
        }
    }

    public static void flushDB() {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            jedis.flushDB();
        } catch (Exception e) {
            LOGGER.error("Cache清空失败：" + e);
        } finally {
            closeRedis(jedis);
        }
    }

    public static boolean setex(byte[] key, byte[] value, int expire) {
        Jedis redis = getResource();
        try {
            redis.setex(key, expire, value);
            return true;
        } catch (Exception e) {
            LOGGER.error("保存redis：" + e);
            return false;
        } finally {
            closeRedis(redis);
        }
    }

    public static boolean setex(String key, String value, int expire) {
        Jedis redis = getResource();
        try {
            redis.setex(key, expire, value);
            return true;
        } catch (Exception e) {
            LOGGER.error("保存redis：" + e);
            return false;
        } finally {
            closeRedis(redis);
        }
    }

    public static boolean setByte(byte[] key, byte[] value) {
        Jedis redis = getResource();
        try {
            redis.set(key, value);
            return true;
        } catch (Exception e) {
            LOGGER.error("保存redis：" + e);
            return false;
        } finally {
            closeRedis(redis);
        }
    }
    public void afterPropertiesSet() throws Exception {
        // TODO Auto-generated method stub

    }
}