Redis操作字符串工具类封装,Redis工具类封装

时间:2023-03-08 16:40:01

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/