Redis工具类
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.log4j.Logger;
import redis.clients.jedis.BinaryClient.LIST_POSITION;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
/**
* Redis工具类
* 调用格式：RedisUtil.getRu().方法
*/
public class RedisUtil {
private static Logger logger = Logger.getLogger(RedisUtil.class);
private static JedisPool pool = null;
private static RedisUtil ru = new RedisUtil();
private RedisUtil() {
if (pool == null) {
//redis服务器IP
String ip = SysConfigUtil.getByKey("redis.ip") ;
//redis服务器端口
int port = Integer.parseInt(SysConfigUtil.getByKey("redis.port"));
JedisPoolConfig config = new JedisPoolConfig();
// 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(10000);
// 控制一个pool最多有多少个状态为idle(空闲的)的jedis实例。
config.setMaxIdle(2000);
// 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 * 100);
config.setTestOnBorrow(true);
pool = new JedisPool(config, ip, port, 100000);
}
}
/**
* <p>通过key获取储存在redis中的value</p>
* <p>并释放连接</p>
* @param key
* @return 成功返回value 失败返回null
*/
public String get(String key){
Jedis jedis = null;
String value = null;
try {
jedis = pool.getResource();
value = jedis.get(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return value;
}
/**
* <p>向redis存入key和value,并释放连接资源</p>
* <p>如果key已经存在 则覆盖</p>
* @param key
* @param value
* @return 成功 返回OK 失败返回 0
*/
public String set(String key,String value){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.set(key, value);
} catch (Exception e) {
logger.error(e.getMessage());
return "0";
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>删除指定的key,也可以传入一个包含key的数组</p>
* @param keys 一个key 也可以使 string 数组
* @return 返回删除成功的个数
*/
public Long del(String...keys){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.del(keys);
} catch (Exception e) {
logger.error(e.getMessage());
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>通过key向指定的value值追加值</p>
* @param key
* @param str
* @return 成功返回 添加后value的长度 失败 返回 添加的 value 的长度 异常返回0L
*/
public Long append(String key ,String str){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.append(key, str);
} catch (Exception e) {
logger.error(e.getMessage());
return 0L;
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>判断key是否存在</p>
* @param key
* @return true OR false
*/
public Boolean exists(String key){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.exists(key);
} catch (Exception e) {
logger.error(e.getMessage());
return false;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>设置key value,如果key已经存在则返回0,nx==> not exist</p>
* @param key
* @param value
* @return 成功返回1 如果存在 和 发生异常 返回 0
*/
public Long setnx(String key ,String value){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.setnx(key, value);
} catch (Exception e) {
logger.error(e.getMessage());
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>设置key value并制定这个键值的有效期</p>
* @param key
* @param value
* @param seconds 单位:秒
* @return 成功返回OK 失败和异常返回null
*/
public String setex(String key,String value,int seconds){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.setex(key, seconds, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和offset 从指定的位置开始将原先value替换</p>
* <p>下标从0开始,offset表示从offset下标开始替换</p>
* <p>如果替换的字符串长度过小则会这样</p>
* <p>example:</p>
* <p>value : rscoa@richinfo.cn</p>
* <p>str : abc </p>
* <P>从下标7开始替换 则结果为</p>
* <p>RES : rscoa.cn</p>
* @param key
* @param str
* @param offset 下标位置
* @return 返回替换后 value 的长度
*/
public Long setrange(String key,String str,int offset){
Jedis jedis = null;
try {
jedis = pool.getResource();
return jedis.setrange(key, offset, str);
} catch (Exception e) {
logger.error(e.getMessage());
return 0L;
} finally {
returnResource(pool, jedis);
}
}
/**
* <p>通过批量的key获取批量的value</p>
* @param keys string数组 也可以是一个key
* @return 成功返回value的集合, 失败返回null的集合 ,异常返回空
*/
public List<String> mget(String...keys){
Jedis jedis = null;
List<String> values = null;
try {
jedis = pool.getResource();
values = jedis.mget(keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return values;
}
/**
* <p>批量的设置key:value,可以一个</p>
* <p>example:</p>
* <p> obj.mset(new String[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return 成功返回OK 失败 异常 返回 null
*
*/
public String mset(String...keysvalues){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.mset(keysvalues);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>批量的设置key:value,可以一个,如果key已经存在则会失败,操作会回滚</p>
* <p>example:</p>
* <p> obj.msetnx(new String[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return 成功返回1 失败返回0
*/
public Long msetnx(String...keysvalues){
Jedis jedis = null;
Long res = 0L;
try {
jedis = pool.getResource();
res =jedis.msetnx(keysvalues);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>设置key的值,并返回一个旧值</p>
* @param key
* @param value
* @return 旧值 如果key不存在 则返回null
*/
public String getset(String key,String value){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.getSet(key, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过下标 和key 获取指定下标位置的 value</p>
* @param key
* @param startOffset 开始位置 从0 开始 负数表示从右边开始截取
* @param endOffset
* @return 如果没有返回null
*/
public String getrange(String key, int startOffset ,int endOffset){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.getrange(key, startOffset, endOffset);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 对value进行加值+1操作,当value不是int类型时会返回错误,当key不存在是则value为1</p>
* @param key
* @return 加值后的结果
*/
public Long incr(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.incr(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给指定的value加值,如果key不存在,则这是value为该值</p>
* @param key
* @param integer
* @return
*/
public Long incrBy(String key,Long integer){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.incrBy(key, integer);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>对key的值做减减操作,如果key不存在,则设置key为-1</p>
* @param key
* @return
*/
public Long decr(String key) {
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.decr(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>减去指定的值</p>
* @param key
* @param integer
* @return
*/
public Long decrBy(String key,Long integer){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.decrBy(key, integer);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取value值的长度</p>
* @param key
* @return 失败返回null
*/
public Long serlen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.strlen(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给field设置指定的值,如果key不存在,则先创建</p>
* @param key
* @param field 字段
* @param value
* @return 如果存在返回0 异常返回null
*/
public Long hset(String key,String field,String value) {
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hset(key, field, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给field设置指定的值,如果key不存在则先创建,如果field已经存在,返回0</p>
* @param key
* @param field
* @param value
* @return
*/
public Long hsetnx(String key,String field,String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hsetnx(key, field, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key同时设置 hash的多个field</p>
* @param key
* @param hash
* @return 返回OK 异常返回null
*/
public String hmset(String key,Map<String, String> hash){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.hmset(key, hash);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和 field 获取指定的 value</p>
* @param key
* @param field
* @return 没有返回null
*/
public String hget(String key, String field){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.hget(key, field);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 和 fields 获取指定的value 如果没有对应的value则返回null</p>
* @param key
* @param fields 可以使 一个String 也可以是 String数组
* @return
*/
public List<String> hmget(String key,String...fields){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hmget(key, fields);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key给指定的field的value加上给定的值</p>
* @param key
* @param field
* @param value
* @return
*/
public Long hincrby(String key ,String field ,Long value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hincrBy(key, field, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key和field判断是否有指定的value存在</p>
* @param key
* @param field
* @return
*/
public Boolean hexists(String key , String field){
Jedis jedis = null;
Boolean res = false;
try {
jedis = pool.getResource();
res = jedis.hexists(key, field);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回field的数量</p>
* @param key
* @return
*/
public Long hlen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hlen(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key 删除指定的 field </p>
* @param key
* @param fields 可以是 一个 field 也可以是 一个数组
* @return
*/
public Long hdel(String key ,String...fields){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.hdel(key, fields);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有的field</p>
* @param key
* @return
*/
public Set<String> hkeys(String key){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hkeys(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有和key有关的value</p>
* @param key
* @return
*/
public List<String> hvals(String key){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.hvals(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取所有的field和value</p>
* @param key
* @return
*/
public Map<String, String> hgetall(String key){
Jedis jedis = null;
Map<String, String> res = null;
try {
jedis = pool.getResource();
res = jedis.hgetAll(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向list头部添加字符串</p>
* @param key
* @param strs 可以使一个string 也可以使string数组
* @return 返回list的value个数
*/
public Long lpush(String key ,String...strs){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.lpush(key, strs);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向list尾部添加字符串</p>
* @param key
* @param strs 可以使一个string 也可以使string数组
* @return 返回list的value个数
*/
public Long rpush(String key ,String...strs){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.rpush(key, strs);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key在list指定的位置之前或者之后 添加字符串元素</p>
* @param key
* @param where LIST_POSITION枚举类型
* @param pivot list里面的value
* @param value 添加的value
* @return
*/
public Long linsert(String key, LIST_POSITION where,
String pivot, String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.linsert(key, where, pivot, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key设置list指定下标位置的value</p>
* <p>如果下标超过list里面value的个数则报错</p>
* @param key
* @param index 从0开始
* @param value
* @return 成功返回OK
*/
public String lset(String key ,Long index, String value){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lset(key, index, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从对应的list中删除指定的count个 和 value相同的元素</p>
* @param key
* @param count 当count为0时删除全部
* @param value
* @return 返回被删除的个数
*/
public Long lrem(String key,long count,String value){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.lrem(key, count, value);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key保留list中从strat下标开始到end下标结束的value值</p>
* @param key
* @param start
* @param end
* @return 成功返回OK
*/
public String ltrim(String key ,long start ,long end){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.ltrim(key, start, end);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从list的头部删除一个value,并返回该value</p>
* @param key
* @return
*/
synchronized public String lpop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lpop(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从list尾部删除一个value,并返回该元素</p>
* @param key
* @return
*/
synchronized public String rpop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.rpop(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key从一个list的尾部删除一个value并添加到另一个list的头部,并返回该value</p>
* <p>如果第一个list为空或者不存在则返回null</p>
* @param srckey
* @param dstkey
* @return
*/
public String rpoplpush(String srckey, String dstkey){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.rpoplpush(srckey, dstkey);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取list中指定下标位置的value</p>
* @param key
* @param index
* @return 如果没有返回null
*/
public String lindex(String key,long index){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.lindex(key, index);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回list的长度</p>
* @param key
* @return
*/
public Long llen(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.llen(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取list指定下标位置的value</p>
* <p>如果start 为 0 end 为 -1 则返回全部的list中的value</p>
* @param key
* @param start
* @param end
* @return
*/
public List<String> lrange(String key,long start,long end){
Jedis jedis = null;
List<String> res = null;
try {
jedis = pool.getResource();
res = jedis.lrange(key, start, end);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向指定的set中添加value</p>
* @param key
* @param members 可以是一个String 也可以是一个String数组
* @return 添加成功的个数
*/
public Long sadd(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sadd(key, members);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除set中对应的value值</p>
* @param key
* @param members 可以是一个String 也可以是一个String数组
* @return 删除的个数
*/
public Long srem(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.srem(key, members);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key随机删除一个set中的value并返回该值</p>
* @param key
* @return
*/
public String spop(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.spop(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中的差集</p>
* <p>以第一个set为标准</p>
* @param keys 可以使一个string 则返回set中所有的value 也可以是string数组
* @return
*/
public Set<String> sdiff(String...keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sdiff(keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中的差集并存入到另一个key中</p>
* <p>以第一个set为标准</p>
* @param dstkey 差集存入的key
* @param keys 可以使一个string 则返回set中所有的value 也可以是string数组
* @return
*/
public Long sdiffstore(String dstkey,String... keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sdiffstore(dstkey, keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取指定set中的交集</p>
* @param keys 可以使一个string 也可以是一个string数组
* @return
*/
public Set<String> sinter(String...keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sinter(keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取指定set中的交集 并将结果存入新的set中</p>
* @param dstkey
* @param keys 可以使一个string 也可以是一个string数组
* @return
*/
public Long sinterstore(String dstkey,String...keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sinterstore(dstkey, keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有set的并集</p>
* @param keys 可以使一个string 也可以是一个string数组
* @return
*/
public Set<String> sunion(String... keys){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.sunion(keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回所有set的并集,并存入到新的set中</p>
* @param dstkey
* @param keys 可以使一个string 也可以是一个string数组
* @return
*/
public Long sunionstore(String dstkey,String...keys){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.sunionstore(dstkey, keys);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key将set中的value移除并添加到第二个set中</p>
* @param srckey 需要移除的
* @param dstkey 添加的
* @param member set中的value
* @return
*/
public Long smove(String srckey, String dstkey, String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.smove(srckey, dstkey, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中value的个数</p>
* @param key
* @return
*/
public Long scard(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.scard(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key判断value是否是set中的元素</p>
* @param key
* @param member
* @return
*/
public Boolean sismember(String key,String member){
Jedis jedis = null;
Boolean res = null;
try {
jedis = pool.getResource();
res = jedis.sismember(key, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中随机的value,不删除元素</p>
* @param key
* @return
*/
public String srandmember(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.srandmember(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取set中所有的value</p>
* @param key
* @return
*/
public Set<String> smembers(String key){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.smembers(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key向zset中添加value,score,其中score就是用来排序的</p>
* <p>如果该value已经存在则根据score更新元素</p>
* @param key
* @param score
* @param member
* @return
*/
public Long zadd(String key,double score,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zadd(key, score, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除在zset中指定的value</p>
* @param key
* @param members 可以使一个string 也可以是一个string数组
* @return
*/
public Long zrem(String key,String...members){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrem(key, members);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key增加该zset中value的score的值</p>
* @param key
* @param score
* @param member
* @return
*/
public Double zincrby(String key ,double score ,String member){
Jedis jedis = null;
Double res = null;
try {
jedis = pool.getResource();
res = jedis.zincrby(key, score, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中value的排名</p>
* <p>下标从小到大排序</p>
* @param key
* @param member
* @return
*/
public Long zrank(String key,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrank(key, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中value的排名</p>
* <p>下标从大到小排序</p>
* @param key
* @param member
* @return
*/
public Long zrevrank(String key,String member){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrank(key, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key将获取score从start到end中zset的value</p>
* <p>socre从大到小排序</p>
* <p>当start为0 end为-1时返回全部</p>
* @param key
* @param start
* @param end
* @return
*/
public Set<String> zrevrange(String key ,long start ,long end){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrange(key, start, end);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回指定score内zset中的value</p>
* @param key
* @param max
* @param min
* @return
*/
public Set<String> zrangebyscore(String key,String max,String min){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrangeByScore(key, max, min);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回指定score内zset中的value</p>
* @param key
* @param max
* @param min
* @return
*/
public Set<String> zrangeByScore(String key ,double max,double min){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.zrevrangeByScore(key,max,min);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>返回指定区间内zset中value的数量</p>
* @param key
* @param min
* @param max
* @return
*/
public Long zcount(String key,String min,String max){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zcount(key, min, max);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key返回zset中的value个数</p>
* @param key
* @return
*/
public Long zcard(String key){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zcard(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key获取zset中value的score值</p>
* @param key
* @param member
* @return
*/
public Double zscore(String key,String member){
Jedis jedis = null;
Double res = null;
try {
jedis = pool.getResource();
res = jedis.zscore(key, member);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除给定区间内的元素</p>
* @param key
* @param start
* @param end
* @return
*/
public Long zremrangeByRank(String key ,long start, long end){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zremrangeByRank(key, start, end);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key删除指定score内的元素</p>
* @param key
* @param start
* @param end
* @return
*/
public Long zremrangeByScore(String key,double start,double end){
Jedis jedis = null;
Long res = null;
try {
jedis = pool.getResource();
res = jedis.zremrangeByScore(key, start, end);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>返回满足pattern表达式的所有key</p>
* <p>keys(*)</p>
* <p>返回所有的key</p>
* @param pattern
* @return
*/
public Set<String> keys(String pattern){
Jedis jedis = null;
Set<String> res = null;
try {
jedis = pool.getResource();
res = jedis.keys(pattern);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* <p>通过key判断值得类型</p>
* @param key
* @return
*/
public String type(String key){
Jedis jedis = null;
String res = null;
try {
jedis = pool.getResource();
res = jedis.type(key);
} catch (Exception e) {
logger.error(e.getMessage());
} finally {
returnResource(pool, jedis);
}
return res;
}
/**
* 返还到连接池
*
* @param pool
* @param jedis
*/
public void returnResource(JedisPool pool, Jedis jedis) {
if (jedis != null) {
pool.returnResource(jedis);
}
}
/**
* 获取RedisUtil实例
* @return
*/
public static RedisUtil getRu() {
return ru;
}
/**
* new 一个RedisUtil 对象
* @param ru
*/
public static void setRu(RedisUtil ru) {
RedisUtil.ru = ru;
}
/**
* redis test
* @param args
*/
public static void main(String[] args) {
RedisUtil.getRu().set("rcs_oa", "rcs_oa_value");
System.out.println(RedisUtil.getRu().get("rcs_oa"));
System.out.println(RedisUtil.getRu().getrange("rcs_oa", 0, 1));
System.out.println(RedisUtil.getRu().getset("rcs_oa", "rcs_oa_new"));
//System.out.println(RedisUtil.hget("rcs_oa","rcs"));
System.out.println(RedisUtil.getRu().get("rcs_oa"));
//System.out.println(RedisUtil.lindex("rcs_oa", 1));
//System.out.println(RedisUtil.del("rcs_oa"));
System.out.println(RedisUtil.getRu().get("rcs_oa"));
System.out.println(RedisUtil.getRu().exists("rcs_oa"));
System.out.println(RedisUtil.getRu().type("rcs_oa"));
}
} 本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
如有侵权请联系 cloudcommunity@tencent.com 删除
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