Redis+Jedis封装工具类详解大数据

package com.liying.monkey.core.util; 
 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.HashSet; 
import java.util.List; 
import java.util.Map; 
import java.util.Set; 
 
import org.apache.commons.collections.CollectionUtils; 
import org.apache.commons.lang3.StringUtils; 
import org.apache.commons.lang3.math.NumberUtils; 
import org.apache.log4j.Logger; 
 
import redis.clients.jedis.Jedis; 
import redis.clients.jedis.JedisPool; 
import redis.clients.jedis.JedisPoolConfig; 
 
import com.liying.monkey.core.common.Constants.Zero; 
 
public class RedisUtil { 
    private static final Logger log = Logger.getLogger(RedisUtil.class); 
    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException； 
    private static int MAX_WAIT = 15 * 1000; 
    //超时时间 
    private static int TIMEOUT = 10 * 1000; 
     
    private static JedisPool jedisPool = null; 
     
    /** 
     * Jedis实例获取返回码 
     *  
     * @author jqlin 
     * 
     */ 
    public static class JedisStatus{ 
        /**Jedis实例获取失败*/ 
        public static final long FAIL_LONG = -5L; 
        /**Jedis实例获取失败*/ 
        public static final int FAIL_INT = -5; 
        /**Jedis实例获取失败*/ 
        public static final String FAIL_STRING = "-5"; 
    } 
     
     
    private static void initialPool() { 
        //Redis服务器IP 
        String HOST = PropertyReader.get("redis.native.host"); 
        //Redis的端口号 
        int PORT = NumberUtils.toInt(PropertyReader.get("redis.native.port"), 6379); 
        //访问密码 
        String AUTH = PropertyReader.get("redis.native.password"); 
         
        try { 
            JedisPoolConfig config = new JedisPoolConfig(); 
            //最大连接数，如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。 
            config.setMaxTotal(NumberUtils.toInt(PropertyReader.get("redis.native.maxTotal"), 400)); 
            //最大空闲数，控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。 
            config.setMaxIdle(NumberUtils.toInt(PropertyReader.get("redis.native.maxIdle"), 50)); 
            //最小空闲数 
            config.setMinIdle(NumberUtils.toInt(PropertyReader.get("redis.native.minIdle"), 10)); 
            //是否在从池中取出连接前进行检验，如果检验失败，则从池中去除连接并尝试取出另一个 
            config.setTestOnBorrow(true); 
            //在return给pool时，是否提前进行validate操作 
            config.setTestOnReturn(true); 
            //在空闲时检查有效性，默认false 
            config.setTestWhileIdle(true); 
            //表示一个对象至少停留在idle状态的最短时间，然后才能被idle object evitor扫描并驱逐； 
            //这一项只有在timeBetweenEvictionRunsMillis大于0时才有意义 
            config.setMinEvictableIdleTimeMillis(30000); 
            //表示idle object evitor两次扫描之间要sleep的毫秒数 
            config.setTimeBetweenEvictionRunsMillis(60000); 
            //表示idle object evitor每次扫描的最多的对象数 
            config.setNumTestsPerEvictionRun(1000);  
            //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException； 
            config.setMaxWaitMillis(MAX_WAIT); 
             
            if (StringUtils.isNotBlank(AUTH)) { 
                jedisPool = new JedisPool(config, HOST, PORT, TIMEOUT, AUTH); 
            } else { 
                jedisPool = new JedisPool(config, HOST, PORT, TIMEOUT); 
            } 
        } catch (Exception e) { 
            if(jedisPool != null){ 
                jedisPool.close(); 
            } 
            log.error("初始化Redis连接池失败", e); 
        } 
    } 
     
    /** 
     * 初始化Redis连接池 
     */ 
    static { 
        initialPool(); 
    } 
     
    /** 
     * 在多线程环境同步初始化 
     */ 
    private static synchronized void poolInit() { 
        if (jedisPool == null) { 
            initialPool(); 
        } 
    } 
     
     /** 
     * 同步获取Jedis实例 
     * 
     * @return Jedis 
     */ 
    public static Jedis getJedis() { 
        if (jedisPool == null) { 
            poolInit(); 
        } 
 
        Jedis jedis = null; 
        try { 
            if (jedisPool != null) { 
                jedis = jedisPool.getResource(); 
            } 
        } catch (Exception e) { 
            log.error("同步获取Jedis实例失败" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        }   
         
        return jedis; 
    } 
     
    /** 
     * 释放jedis资源 
     * 
     * @param jedis 
     */ 
    @SuppressWarnings("deprecation") 
    public static void returnResource(final Jedis jedis) { 
        if (jedis != null && jedisPool != null) { 
            jedisPool.returnResource(jedis); 
        } 
    } 
     
    @SuppressWarnings("deprecation") 
    public static void returnBrokenResource(final Jedis jedis) { 
        if (jedis != null && jedisPool != null) { 
            jedisPool.returnBrokenResource(jedis); 
        } 
    } 
     
    /** 
     * 设置值 
     *  
     * @param key  
     * @param value  
     * @return -5：Jedis实例获取失败<br/>OK：操作成功<br/>null：操作失败 
     * @author jqlin 
     */ 
    public static String set(String key, String value) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_STRING; 
        } 
          
        String result = null; 
        try {  
            result = jedis.set(key, value); 
        } catch (Exception e) { 
            log.error("设置值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 设置值 
     *  
     * @param key 
     * @param value 
     * @param expire 过期时间，单位：秒 
     * @return -5：Jedis实例获取失败<br/>OK：操作成功<br/>null：操作失败 
     * @author jqlin 
     */ 
    public static String set(String key, String value, int expire) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_STRING; 
        } 
         
        String result = null; 
        try {  
            result = jedis.set(key, value); 
            jedis.expire(key, expire); 
        } catch (Exception e) { 
            log.error("设置值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
         
        return result; 
    } 
     
    /** 
     * 获取值 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static String get(String key) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_STRING; 
        } 
          
        String result = null; 
        try {  
            result = jedis.get(key); 
        } catch (Exception e) { 
            log.error("获取值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 设置key的过期时间 
     *  
     * @param key 
     * @param value -5：Jedis实例获取失败，1：成功，0：失败 
     * @return 
     * @author jqlin 
     */ 
    public static long expire(String key, int seconds) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_LONG; 
        } 
          
        long result = Zero.LONG; 
        try {  
            result = jedis.expire(key, seconds); 
        } catch (Exception e) { 
            log.error(String.format("设置key=%s的过期时间失败：" + e.getMessage(), key), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 判断key是否存在 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static boolean exists(String key) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return false; 
        } 
          
        boolean result = false; 
        try {  
            result = jedis.exists(key); 
        } catch (Exception e) { 
            log.error(String.format("判断key=%s是否存在失败：" + e.getMessage(), key), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 删除key 
     *  
     * @param keys 
     * @return -5：Jedis实例获取失败，1：成功，0：失败 
     * @author jqlin 
     */ 
    public static long del(String... keys) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_LONG; 
        } 
          
        long result = JedisStatus.FAIL_LONG; 
        try {   
            result = jedis.del(keys); 
        } catch (Exception e) { 
            log.error(String.format("删除key=%s失败：" + e.getMessage(), keys), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * set if not exists，若key已存在，则setnx不做任何操作 
     *  
     * @param key 
     * @param value key已存在，1：key赋值成功 
     * @return 
     * @author jqlin 
     */ 
    public static long setnx(String key, String value) { 
        long result = JedisStatus.FAIL_LONG; 
         
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return result; 
        } 
          
        try {  
            result = jedis.setnx(key, value); 
        } catch (Exception e) { 
            log.error("设置值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * set if not exists，若key已存在，则setnx不做任何操作 
     *  
     * @param key 
     * @param value key已存在，1：key赋值成功 
     * @param expire 过期时间，单位：秒 
     * @return 
     * @author jqlin 
     */ 
    public static long setnx(String key, String value, int expire) { 
        long result = JedisStatus.FAIL_LONG; 
         
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return result; 
        } 
         
        try { 
            result = jedis.setnx(key, value); 
            jedis.expire(key, expire); 
        } catch (Exception e) { 
            log.error("设置值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
         
        return result; 
    } 
     
    /** 
     * 在列表key的头部插入元素 
     *  
     * @param key 
     * @param values -5：Jedis实例获取失败，>0：返回操作成功的条数，0：失败 
     * @return 
     * @author jqlin 
     */ 
    public static long lpush(String key, String... values) { 
        long result = JedisStatus.FAIL_LONG; 
         
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return result; 
        } 
          
        try {  
            result = jedis.lpush(key, values); 
        } catch (Exception e) { 
            log.error("在列表key的头部插入元素失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 在列表key的尾部插入元素 
     *  
     * @param key 
     * @param values -5：Jedis实例获取失败，>0：返回操作成功的条数，0：失败 
     * @return 
     * @author jqlin 
     */ 
    public static long rpush(String key, String... values) { 
        long result = JedisStatus.FAIL_LONG; 
         
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return result; 
        } 
          
        try {  
            result = jedis.rpush(key, values); 
        } catch (Exception e) { 
            log.error("在列表key的尾部插入元素失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 返回存储在key列表的特定元素  
     *    
     *  
     * @param key  
     * @param start 开始索引，索引从0开始，0表示第一个元素，1表示第二个元素 
     * @param end 结束索引，-1表示最后一个元素，-2表示倒数第二个元素 
     * @return redis client获取失败返回null 
     * @author jqlin 
     */ 
    public static List<String> lrange(String key, long start, long end) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return null; 
        } 
          
        List<String> result = null; 
        try {  
            result = jedis.lrange(key, start, end); 
        } catch (Exception e) { 
            log.error("查询列表元素失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 获取List缓存对象 
     *  
     * @param key 
     * @param start 
     * @param end 
     * @return List<T> 返回类型 
     * @author jqlin 
     */ 
    public static <T> List<T> range(String key, long start, long end, Class<T> clazz){ 
        List<String> dataList = lrange(key, start, end); 
        if(CollectionUtils.isEmpty(dataList)){ 
            return new ArrayList<T>(); 
        } 
         
        return JavaJsonConvert.json2List(dataList.toString(), clazz); 
    } 
 
    /** 
     * 获取列表长度 
     *  
     * @param key -5：Jedis实例获取失败 
     * @return 
     * @author jqlin 
     */ 
    public static long llen(String key) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_LONG; 
        } 
          
        long result = 0; 
        try {  
            result = jedis.llen(key); 
        } catch (Exception e) { 
            log.error("获取列表长度失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 移除等于value的元素<br/><br/> 
     *        当count>0时，从表头开始查找，移除count个；<br/> 
     *        当count=0时，从表头开始查找，移除所有等于value的；<br/> 
     *        当count<0时，从表尾开始查找，移除count个 
     *  
     * @param key 
     * @param count 
     * @param value 
     * @return -5:Jedis实例获取失败 
     * @author jqlin 
     */ 
    public static long lrem(String key, long count, String value) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_LONG; 
        } 
          
        long result = 0; 
        try {  
            result = jedis.lrem(key, count, value); 
        } catch (Exception e) { 
            log.error("获取列表长度失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 对列表进行修剪 
     *  
     * @param key 
     * @param start 
     * @param end 
     * @return -5：Jedis实例获取失败，OK：命令执行成功 
     * @author jqlin 
     */ 
    public static String ltrim(String key, long start, long end) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_STRING; 
        } 
          
        String result = ""; 
        try {  
            result = jedis.ltrim(key, start, end); 
        } catch (Exception e) { 
            log.error("获取列表长度失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 设置对象 
     *  
     * @param key 
     * @param obj 
     * @return 
     * @author jqlin 
     */ 
    public static <T> String setObject(String key ,T obj){   
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_STRING; 
        } 
          
        String result = null; 
        try {  
            byte[] data=SerializeUtil.serialize(obj);  
            result = jedis.set(key.getBytes(), data); 
        } catch (Exception e) { 
            log.error("设置对象失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 获取对象 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    @SuppressWarnings("unchecked") 
    public static <T> T getObject(String key){   
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return null; 
        } 
          
        T result = null; 
        try {  
            byte[] data = jedis.get(key.getBytes()); 
            if(data != null && data.length > 0){ 
                result=(T)SerializeUtil.unserialize(data); 
            } 
        } catch (Exception e) { 
            log.error("获取对象失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 设置List集合（慎用） 
     *  
     * @param key 
     * @param dataList 
     * @return 
     * @author jqlin 
     */ 
    public synchronized static <T> T setList(String key, List<T> dataList){   
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return null; 
        } 
          
        T result = null; 
        try {  
            List<T> list = getList(key); 
            if(CollectionUtils.isNotEmpty(list)){ 
                dataList.addAll(list); 
            } 
             
            if(CollectionUtils.isNotEmpty(dataList)){ 
                byte[] data = SerializeUtil.serializeToList(dataList); 
                jedis.set(key.getBytes(), data); 
            }else{//如果list为空,则设置一个空   
                jedis.set(key.getBytes(), "".getBytes()); 
            } 
        } catch (Exception e) { 
            log.error("设置List集合失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 获取List集合（慎用） 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static <T> List<T> getList(String key){   
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return null; 
        } 
          
        try {  
             byte[] data = getJedis().get(key.getBytes());   
             if(data != null && data.length > 0){ 
                 return SerializeUtil.unserializeToList(data); 
             } 
        } catch (Exception e) { 
            log.error("获取List集合失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return null; 
    } 
     
    /** 
     * 缓存Map赋值 
     *  
     * @param key 
     * @param field 
     * @param value 
     * @return -5：Jedis实例获取失败 
     * @author jqlin 
     */ 
    public static long hset(String key, String field, String value) { 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return JedisStatus.FAIL_LONG; 
        } 
          
        long result = 0L; 
        try {  
            result = jedis.hset(key, field, value); 
        } catch (Exception e) { 
            log.error("缓存Map赋值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
     
    /** 
     * 获取缓存的Map值 
     *  
     * @param key 
     * @return 
     */ 
    public static String hget(String key, String field){ 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            return null; 
        } 
          
        String result = null; 
        try {  
            result = jedis.hget(key, field); 
        } catch (Exception e) { 
            log.error("获取缓存的Map值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return result; 
    } 
     
    /** 
     * 获取map所有的字段和值 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static Map<String, String> hgetAll(String key){ 
        Map<String, String> map = new HashMap<String, String>(); 
         
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return map; 
        } 
          
        try {  
            map = jedis.hgetAll(key); 
        } catch (Exception e) { 
            log.error("获取map所有的字段和值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return map; 
    } 
     
    /** 
     * 查看哈希表 key 中，指定的field字段是否存在。 
     *  
     * @param key 
     * @param field 
     * @return 
     * @author jqlin 
     */ 
    public static Boolean hexists(String key, String field){ 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return null; 
        } 
          
        try {  
            return jedis.hexists(key, field); 
        } catch (Exception e) { 
            log.error("查看哈希表field字段是否存在失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return null; 
    } 
 
    /** 
     * 获取所有哈希表中的字段 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static Set<String> hkeys(String key) { 
        Set<String> set = new HashSet<String>(); 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return set; 
        } 
         
        try {  
            return jedis.hkeys(key); 
        } catch (Exception e) { 
            log.error("获取所有哈希表中的字段失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return null; 
    } 
     
    /** 
     * 获取所有哈希表中的值 
     *  
     * @param key 
     * @return 
     * @author jqlin 
     */ 
    public static List<String> hvals(String key) { 
        List<String> list = new ArrayList<String>(); 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return list; 
        } 
         
        try {  
            return jedis.hvals(key); 
        } catch (Exception e) { 
            log.error("获取所有哈希表中的值失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return null; 
    } 
     
    /** 
     * 从哈希表 key 中删除指定的field 
     *  
     * @param key 
     * @param field 
     * @return   
     * @author jqlin 
     */ 
    public static long hdel(String key, String... fields){ 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return JedisStatus.FAIL_LONG; 
        } 
         
        try {  
            return jedis.hdel(key, fields); 
        } catch (Exception e) { 
            log.error("map删除指定的field失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return 0; 
    } 
     
    public static Set<String> keys(String pattern){ 
        Set<String> keyList = new HashSet<String>(); 
        Jedis jedis = getJedis(); 
        if(jedis == null){ 
            log.warn("Jedis实例获取为空"); 
            return keyList; 
        } 
         
        try {  
            keyList = jedis.keys(pattern); 
        } catch (Exception e) { 
            log.error("操作keys失败：" + e.getMessage(), e); 
            returnBrokenResource(jedis); 
        } finally { 
            returnResource(jedis); 
        } 
 
        return keyList; 
    } 
     
    public static void main(String[] args) throws IOException {  
//        System.out.println(hset("map", "a","3")); 
//        System.out.println(hset("map", "b","3")); 
//        System.out.println(hset("map", "c","3")); 
        Set<String> set = keys("lock*"); 
        for(String key : set){ 
            System.out.println(key); 
        } 
    } 
}