Redis部分数据结构方法小结

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package com.practice.util;   import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set;   import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory;   import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig;     public class RedisUtil {     private static final Log log = LogFactory.getLog(RedisUtil.class);       private static JedisPool jedisPool;//非切片连接池           private static final Object lock = new Object();           private static final int DEFAULT_TIME_OUT = 30000;           private static String redisIp = "192.168.77.153";           private static Integer redisPort = 7000;           /**      * 构建redis切片连接池      *      * @param ip      * @param port      * @return JedisPool      */     public static JedisPool getJedisPool() {         if (jedisPool == null) {             synchronized (lock) {                 if (jedisPool == null) {                     JedisPoolConfig config = new JedisPoolConfig();                     //设置连接池初始化大小和最大容量                                           // 控制一个pool可分配多少个jedis实例，通过pool.getResource()来获取；                     // 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(-1);                                           // 控制一个pool最多有多少个状态为idle(空闲的)的jedis实例。                     config.setMaxIdle(1000);                     // 表示当borrow(引入)一个jedis实例时，最大的等待时间，如果超过等待时间，则直接抛出JedisConnectionException；                     config.setMaxWaitMillis(1000 * 30);                     // 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);                     // 写                     jedisPool = new JedisPool(config, redisIp, redisPort,DEFAULT_TIME_OUT);                                       }             }         }         return jedisPool;     }           /**      * 返还到连接池      *      * @param pool      * @param redis      */     public static void returnJedisResource(Jedis redis) {         if (redis != null) {             redis.close();         }     }           //直接set key-value     public static void setStructure(String key,String value){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.set(key, value);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void getSetStructure(String key){         JedisPool pool = null;         Jedis jedis = null;         String value = "";         try {             pool = getJedisPool();             jedis = pool.getResource();             value = jedis.get(key);             System.out.println(value);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //通过key删除数据     public static void delKey(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.del(key);             System.out.println("del key success");         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //mset相当于 jedis.set("key1","value1");jedis.set("key2","value2")     public static void msetData(String key1,String value1,String key2,String value2){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.mset(key1,value1,key2,value2);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void flushData(){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.flushAll();             System.out.println("flushAll success");         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //判断key是否存在，如果存在则返回1，否则则返回0     public static boolean booleanExsit(String key){         JedisPool pool = null;         Jedis jedis = null;         Boolean exsit = false;         try {             pool = getJedisPool();             jedis = pool.getResource();             exsit =  jedis.exists(key);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }         return exsit;     }           public static void appendData(String key,String data){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.append(key, data);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //截取value的值     public static void getRange(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             String value = jedis.getrange(key, 0, 1);             System.out.println(value);             System.out.println();         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //列表操作 用于将一个或多个值插入到列表的尾部(最右边), 如果列表不存在，一个空列表会被创建并执行 RPUSH 操作。 当列表存在但不是列表类型时，返回一个错误。     public static void rpush(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.rpush(key, "Hello how are you?");              jedis.rpush(key, "Fine thanks. I'm having fun with redis.");              jedis.rpush(key, "I should look into this NOSQL thing ASAP");                     } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           //取出列表中相应位置的值     public static void getPushValue(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             //第一个是key，第二个是起始位置，第三个是结束位置，jedis.llen获取长度 -1表示取得所有              List<String> values = jedis.lrange(key, 0, -1);             System.out.println(values);             } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void Set(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.sadd("myset", "1");              jedis.sadd("myset", "2");              jedis.sadd("myset", "3");              jedis.sadd("myset", "4");              Set<String> setValues = jedis.smembers("myset");             System.out.println(setValues);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void srem(String key){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.srem(key, "4");             Set<String> setValues = jedis.smembers("myset");             System.out.println(setValues);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void hmset(){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             Map<String, String> pairs = new HashMap<String, String>();             pairs.put("name", "Akshi");              pairs.put("age", "2");              pairs.put("sex", "Female");              jedis.hmset("kid", pairs);              List<String> name = jedis.hmget("kid", "name");             System.out.println(name);         } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }           public static void increment(){         JedisPool pool = null;         Jedis jedis = null;         try {             pool = getJedisPool();             jedis = pool.getResource();             jedis.hset("hashs", "entryKey", "1");              jedis.hset("hashs", "entryKey1", "entryValue1");              jedis.hset("hashs", "entryKey2", "entryValue2");              // 判断某个值是否存在             jedis.hexists("hashs", "entryKey");             System.out.println(jedis.hincrBy("hashs", "entryKey", 1));          } catch (Exception e) {             log.error(e);         } finally {             //返还到连接池               returnJedisResource(jedis);         }     }

　　

Redis在工程开发中还是比较常用的Nosql内存数据库，简单巩固一下它的各种数据类型与用法~