Redis操作字符串工具类封装,Redis工具类封装

Redis操作字符串工具类封装,Redis工具类封装

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.

蕃薯耀 2016年9月22日 15:15:32 星期四

http://fanshuyao.iteye.com/

Redis操作字符串工具类封装:http://fanshuyao.iteye.com/blog/2326221

Redis操作Hash工具类封装:http://fanshuyao.iteye.com/blog/2327134

Redis操作List工具类封装:http://fanshuyao.iteye.com/blog/2327137

Redis操作Set工具类封装:http://fanshuyao.iteye.com/blog/2327228

package com.lqy.spring.redis;

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

public class RedisPoolUtils {
	private static JedisPool jedisPool = new JedisPool("127.0.0.1", 6379);
	/**
	 * 成功,"OK"
	 */
	private static final String SUCCESS_OK = "OK";
	/**
	 * 成功,1L
	 */
	private static final Long SUCCESS_STATUS_LONG = 1L;
	/**
	 * 只用key不存在时才设置。Only set the key if it does not already exist
	 */
	private static final String NX = "NX";
	/**
	 * XX -- 只有key存在时才设置。和NX相反。Only set the key if it already exist.
	 */
	private static final String XX = "XX";
	/**
	 * EX|PX, 时间单位,EX是秒,PX是毫秒。expire time units: EX = seconds; PX = milliseconds
	 */
	private static final String EX = "EX";
	/**
	 * EX|PX, 时间单位,EX是秒,PX是毫秒。expire time units: EX = seconds; PX = milliseconds
	 */
	//private static final String PX = "PX";
	
	/**
	 * 成功返回true
	 * @param key
	 * @param value
	 * @return
	 */
	public static boolean set(String key, String value){
		Jedis jedis = jedisPool.getResource();
		String statusCode = jedis.set(key, value);
		jedis.close();
		if(SUCCESS_OK.equalsIgnoreCase(statusCode)){
			return true;
		}
		return false;
	}
	
	/**
	 * 返回值
	 * @param key
	 * @return
	 */
	public static String get(String key){
		Jedis jedis = jedisPool.getResource();
		String value = jedis.get(key);
		jedis.close();
		return value;
	}
	
	/**
	 * 设置key值和过期时间
	 * @param key
	 * @param value
	 * @param seconds 秒数,不能小于0
	 * @return
	 */
	public static boolean setByTime(String key, String value, int seconds){
		if(seconds < 0){
			return false;
		}
		Jedis jedis = jedisPool.getResource();
		String statusCode = jedis.setex(key, seconds, value);
		if(SUCCESS_OK.equalsIgnoreCase(statusCode)){
			return true;
		}
		return false;
	}
	
	/**
	 * 
	 * @param key
	 * @param value
	 * @param nxxx NX|XX  是否存在
	 * <li>NX -- Only set the key if it does not already exist.</li>
	 * <li>XX -- Only set the key if it already exist.</li>
	 * @param expx EX|PX, expire time units ,时间单位格式,秒或毫秒
	 * <li>EX = seconds;</li>
	 * <li>PX = milliseconds</li>
	 * @param time expire time in the units of expx,时间(long型),不能小于0
	 * @return
	 */
	public static boolean set(String key, String value, 
			String nxxx, String expx, long time){
		Jedis jedis = jedisPool.getResource();
		//Status code reply
		if(time < 0){
			return false;
		}
		String statusCode = jedis.set(key, value, nxxx, expx, time);
		jedis.close();
		if(SUCCESS_OK.equalsIgnoreCase(statusCode)){
			return true;
		}
		return false;
	}
	
	/**
	 * 设置key
	 * @param key
	 * @param value
	 * @param nxxx NX|XX 是否需要存在
	 * <li>NX -- Only set the key if it does not already exist.</li> 
	 * <li>XX -- Only set the key if it already exist.</li> 
	 * @return
	 */
	public static boolean set(String key, String value, 
			String nxxx){
		Jedis jedis = jedisPool.getResource();
		String statusCode = jedis.set(key, value, nxxx);
		jedis.close();
		if(SUCCESS_OK.equalsIgnoreCase(statusCode)){
			return true;
		}
		return false;
	}
	
	/**
	 * 当key不存在时,设置值,成功返回true
	 * @param key
	 * @param value
	 * @return
	 */
	public static boolean setIfNotExists(String key, String value){
		Jedis jedis = jedisPool.getResource();
		//1 if the key was set, 0 if the key was not set
		Long statusCode = jedis.setnx(key, value);
		jedis.close();
		if(SUCCESS_STATUS_LONG == statusCode){
			return true;
		}
		return false;
	}
	
	/**
	 * 当key不存在时,设置值,成功返回true,同setIfNotExists
	 * @param key
	 * @param value
	 * @return
	 */
	public static boolean setNX(String key, String value){
		return setIfNotExists(key, value);
	}
	
	/**
	 * 仅当key不存在时则设置值,成功返回true,存在时不设置值
	 * @param key
	 * @param value
	 * @param seconds,秒数,不能小于0
	 * @return
	 */
	public static boolean setIfNotExists(String key, String value, long seconds){
		if(seconds < 0){
			return false;
		}
		return set(key, value, NX, EX, seconds);
	}
	
	/**
	 * 仅当key不存在时则设置值,成功返回true,存在时不设置值,同setIfNotExists(key, value, seconds)
	 * @param key
	 * @param value
	 * @param seconds
	 * @return
	 */
	public static boolean setNX(String key, String value, Long seconds){
		return setIfNotExists(key, value, seconds);
	}
	
	/**
	 * 当key存在时则设置值,成功返回true,不存在不设置值
	 * @param key
	 * @param value
	 * @return
	 */
	public static boolean setIfExists(String key, String value){
		return set(key, value, XX);
	}
	
	/**
	 * 当key存在时则设置值,成功返回true,不存在不设置值,同setIfExists
	 * @param key
	 * @param value
	 * @return
	 */
	public static boolean setXX(String key, String value){
		return setIfExists(key, value);
	}
	
	/**
	 * 仅当key存在时则设置值,成功返回true,不存在不设置值
	 * @param key
	 * @param value
	 * @param seconds,秒数,不能小于0
	 * @return
	 */
	public static boolean setIfExists(String key, String value, long seconds){
		if(seconds < 0){
			return false;
		}
		return set(key, value, XX, EX, seconds);
	}
	
	/**
	 * 仅当key存在时则设置值,成功返回true,不存在不设置值
	 * @param key
	 * @param value
	 * @param seconds,秒数,不能小于0
	 * @return
	 */
	public static boolean setXX(String key, String value, long seconds){
		return setIfExists(key, value, seconds);
	}
	
	/**
	 * 设置超期时间
	 * @param key
	 * @param seconds 为Null时,将会马上过期。可以设置-1,0,表示马上过期
	 * @return
	 */
	public static boolean setTime(String key, Integer seconds){
		if(seconds == null){
			seconds = -1;
		}
		Jedis jedis = jedisPool.getResource();
		Long statusCode = jedis.expire(key, seconds);
		jedis.close();
		if(SUCCESS_STATUS_LONG == statusCode){
			return true;
		}
		return false;
	}
	
	/**
	 * 设置超期时间
	 * @param key
	 * @param seconds 为Null时,将会马上过期。可以设置-1,0,表示马上过期
	 * @return
	 */
	public static boolean setOutTime(String key, Integer seconds){
		return setTime(key, seconds);
	}
	
	/**
	 * 设置超期时间
	 * @param key
	 * @param seconds 秒数,为Null时,将会马上过期。可以设置-1,0,表示马上过期
	 * @return
	 */
	public static boolean expire(String key, Integer seconds){
		return setTime(key, seconds);
	}
	
	/**
	 * 判断key是否存在,存在返回true
	 * @param key
	 * @return
	 */
	public static boolean exists(String key){
		Jedis jedis = jedisPool.getResource();
		boolean result = jedis.exists(key);
		jedis.close();
		return result;
	}
	
	/**
	 * 判断key是否存在,存在返回true
	 * @param key
	 * @return
	 */
	public static boolean isExists(String key){
		return exists(key);
	}
	
	/**
	 * 将key设置为永久
	 * @param key
	 * @return
	 */
	public static boolean persist(String key){
		long time = getTime(key);
		if(time == -1){
			return true;
		}
		Jedis jedis = jedisPool.getResource();
		//已经是永久的,返回0
		Long statusCode = jedis.persist(key);
		jedis.close();
		if(SUCCESS_STATUS_LONG == statusCode){
			return true;
		}
		return false;
	}
	
	/**
	 * 获取剩余时间(秒)
	 * @param key
	 * @return
	 */
	public static Long getTime(String key){
		Jedis jedis = jedisPool.getResource();
		Long time = jedis.ttl(key);
		jedis.close();
		return time;
	}
	
	/**
	 * 获取剩余时间(秒)
	 * @param key
	 * @return
	 */
	public static Long Ttl(String key){
		return getTime(key);
	}
	
	/**
	 * 随机获取一个key
	 * @return
	 */
	public static String randomKey(){
		Jedis jedis = jedisPool.getResource();
		String key = jedis.randomKey();
		jedis.close();
		return key;
	}
	
	/**
	 * 随机获取一个key
	 * @return
	 */
	public static String random(){
		return randomKey();
	}
	
	/**
	 * 修改 key 的名称,成功返回true,如果不存在该key,则会抛错:ERR no such key
	 * 注:如果newKey已经存在,则会进行覆盖。建议使用renameNX
	 * @param oldkey 原来的key
	 * @param newKey 新的key
	 * @return
	 */
	public static boolean rename(String oldkey, String newKey){
		Jedis jedis = jedisPool.getResource();
		String statusCode = jedis.rename(oldkey, newKey);
		jedis.close();
		System.out.println("statusCode="+statusCode);
		if(SUCCESS_OK.equalsIgnoreCase(statusCode)){
			return true;
		}
		return false;
	}
	
	/**
	 * 仅当 newkey 不存在时,将 key 改名为 newkey 。成功返回true
	 * @param oldkey
	 * @param newKey
	 * @return
	 */
	public static boolean renameNX(String oldkey, String newKey){
		Jedis jedis = jedisPool.getResource();
		Long statusCode = jedis.renamenx(oldkey, newKey);
		jedis.close();
		if(SUCCESS_STATUS_LONG == statusCode){
			return true;
		}
		return false;
	}
	
	/**
	 * 仅当 newkey 不存在时,将 key 改名为 newkey 。成功返回true
	 * @param oldkey
	 * @param newKey
	 * @return
	 */
	public static boolean renameIfNotExists(String oldkey, String newKey){
		return renameNX(oldkey, newKey);
	}
	
	/**
	 * 返回 key 所储存的值的类型。
	 * @param key
	 * @return
	 */
	public static String type(String key){
		Jedis jedis = jedisPool.getResource();
		String type = jedis.type(key);
		jedis.close();
		return type;
	}
	
	/**
	 * 返回 key 所储存的值的类型。
	 * @param key
	 * @return
	 */
	public static String getType(String key){
		return type(key);
	}
	
	/**
	 * 删除key及值
	 * @param key
	 * @return
	 */
	public static boolean del(String key){
		Jedis jedis = jedisPool.getResource();
		Long statusCode = jedis.del(key);
		jedis.close();
		if(SUCCESS_STATUS_LONG == statusCode){
			return true;
		}
		return false;
	}
	
	/**
	 * 删除key及值
	 * @param key
	 * @return
	 */
	public static boolean delete(String key){
		return del(key);
	}
	
	/**
	 * 删除key及值
	 * @param key
	 * @return
	 */
	public static boolean remove(String key){
		return del(key);
	}
	
	/**
	 * 批量删除key及值
	 * @param key
	 * @return
	 */
	public static boolean del(String[] keys){
		Jedis jedis = jedisPool.getResource();
		Long statusCode = jedis.del(keys);
		jedis.close();
		if(statusCode > 0){
			return true;
		}
		return false;
	}
	
	/**
	 * 批量删除key及值
	 * @param key
	 * @return
	 */
	public static boolean delete(String[] keys){
		return del(keys);
	}
	
	/**
	 * 批量删除key及值
	 * @param key
	 * @return
	 */
	public static boolean remove(String[] keys){
		return del(keys);
	}
	
	
	public static void main(String[] args) {
		//System.out.println("statusCode="+statusCode);
		//System.out.println(set("wahaha1", "哇哈哈"));
		//System.out.println(setByTime("wahaha1", "哈哈", 1));
		//System.out.println(getTime("wahaha1"));
		/*System.out.println(set("wa", "哈哈", NX, EX, 10L));
		System.out.println(set("wa", "哈哈60", XX, EX, 60L));*/
		//System.out.println(set("wa", "哈哈哈哈2", XX));
		//System.out.println(setIfNotExists("wa", "哈哈not"));
		//System.out.println(setIfNotExists("wa", "哈哈not", 30));
		//System.out.println(setIfExists("wahaha", "有就设置"));
		//System.out.println(setIfExists("wahaha", "有就设置", 60));
		//System.out.println(setTime("wa", -1));
		//System.out.println(exists("wa"));
		//System.out.println(isExists("wa"));
		//System.out.println(setByTime("wa", "30秒过期", 30));
		//System.out.println(persist("wa"));
		/*for(int i=0; i<30; i++){
			System.out.println(randomKey());
		}*/
		//System.out.println(rename("waa", "wa"));
		//System.out.println(renameNX("waa", "waa"));
		//System.out.println(getType("wa"));
		/*System.out.println(del("wa"));
		System.out.println(get("wa"));
		System.out.println(Ttl("wa"));*/
		System.out.println(del(new String[]{"a"}));
	}
	
	

	
	
}

Redis操作字符串工具类封装:http://fanshuyao.iteye.com/blog/2326221

Redis操作Hash工具类封装:http://fanshuyao.iteye.com/blog/2327134

Redis操作List工具类封装:http://fanshuyao.iteye.com/blog/2327137

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.

蕃薯耀 2016年9月22日 15:15:32 星期四

http://fanshuyao.iteye.com/

原文地址:https://www.cnblogs.com/fanshuyao/p/6227097.html