一、思路
用户mac地址唯一，可以作为redis中的key，每次请求进来，利用ttl命令，判断redis中key的剩余时间，如果大于零，则利用incr进行+1操作，然后再与总的限制次数作对比。
二、代码
RedisUtill.java
import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; import redis.clients.jedis.BinaryClient; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; import javax.annotation.PostConstruct; import java.util.List; import java.util.Map; import java.util.Set; @Component public class RedisUtil { private static final Logger LOGGER = LoggerFactory.getLogger(RedisUtil.class); private static JedisPool pool = null; private static RedisUtil ru = null; @Value("${redis.ip}") private String redisIp; @Value("${redis.password}") private String password; @PostConstruct private void initRedis() { if (pool == null) { 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.setMaxActive(1000); // 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.setMaxWait(1000 * 100); config.setTestOnBorrow(true); pool = new JedisPool(config,redisIp, 6379, 100000,password); ru = new RedisUtil(); } } /** * <p>通过key获取储存在redis中的value的过期时间，单位为 秒 </p> * <p>并释放连接</p> * @param key * @return 成功返回value 失败返回null */ public Long ttl(String key){ Jedis jedis = null; Long value = null; try { jedis = pool.getResource(); value = jedis.ttl(key); } catch (Exception e) { LOGGER.error(e.getMessage()); } finally { returnResource(pool, jedis); } return value; } /** * <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 : bigsea@zto.cn</p> * <p>str : abc </p> * <P>从下标7开始替换 则结果为</p> * <p>RES : bigsea.abc.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) { // TODO } 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, BinaryClient.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 static void returnResource(JedisPool pool, Jedis jedis) { if (jedis != null) { pool.returnResource(jedis); } } public static RedisUtil getRu() { return ru; } public static void setRu(RedisUtil ru) { RedisUtil.ru = ru; } }
工具方法：
/** * timeOut 秒内限制调用临时放行接口totalCount次 * @param userMac 用户mac 地址 * @param timeOut 多少秒内 * @param totalCount 总的次数 * @return */ public boolean allowLimitTimes(String userMac, int timeOut, int totalCount){ //次数key String key="allowTimes_"+userMac; boolean result=false; try{ Long ttl = redisUtil.ttl(key); if (ttl > 0) { //第几次访问 Long nowTimes = redisUtil.incr(key); if (nowTimes > totalCount) { logger.error("key:{},超出{}秒内允许访问{}次的限制,这是第{}次访问", new Object[] { key, timeOut, totalCount, nowTimes}); } else { result = true; } } else if (ttl == -1 || ttl == -2 || ttl == 0) {//超时不存在key redisUtil.setex(key,"1",timeOut); result=true; } } catch(Exception e){ logger.error("OpenPlatformService.allowLimitTimes error:",e); } return result; }
使用：
30分钟内限制5次请求进来
if(allowLimitTimes("fc:e9:98:3e:24:37",1800,5)){ //业务逻辑 }