一、思路
使用者mac位址唯一，可以作為redis中的key，每次請求進來，利用ttl指令，判斷redis中key的剩餘時間，如果大于零，則利用incr進行+1操作，然後再與總的限制次數作對比。
二、代碼
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();
// 控制一個pool可配置設定多少個jedis執行個體，通過pool.getResource()來擷取；
// 如果指派為-1，則表示不限制；如果pool已經配置設定了maxActive個jedis執行個體，則此時pool的狀态為exhausted(耗盡)。
config.setMaxActive(1000);
// 控制一個pool最多有多少個狀态為idle(空閑的)的jedis執行個體。
config.setMaxIdle(1000);
// 表示當borrow(引入)一個jedis執行個體時，最大的等待時間，如果超過等待時間，則直接抛出JedisConnectionException；
config.setMaxWait(1000 * 100);
config.setTestOnBorrow(true);
pool = new JedisPool(config,redisIp, 6379, 100000,password);
ru = new RedisUtil();
}
}
/**
* <p>通過key擷取儲存在redis中的value的過期時間，機關為 秒 </p>
* <p>并釋放連接配接</p>
* @param key
* @return 成功傳回value 失敗傳回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>通過key擷取儲存在redis中的value</p>
* <p>并釋放連接配接</p>
* @param key
* @return 成功傳回value 失敗傳回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,并釋放連接配接資源</p>
* <p>如果key已經存在 則覆寫</p>
* @param key
* @param value
* @return 成功 傳回OK 失敗傳回 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,也可以傳入一個包含key的數組</p>
* @param keys 一個key 也可以使 string 數組
* @return 傳回删除成功的個數
*/
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>通過key向指定的value值追加值</p>
* @param key
* @param str
* @return 成功傳回 添加後value的長度 失敗 傳回 添加的 value 的長度 異常傳回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>判斷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>設定key value,如果key已經存在則傳回0,nx==> not exist</p>
* @param key
* @param value
* @return 成功傳回1 如果存在 和 發生異常 傳回 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>設定key value并制定這個鍵值的有效期</p>
* @param key
* @param value
* @param seconds 機關:秒
* @return 成功傳回OK 失敗和異常傳回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>通過key 和offset 從指定的位置開始将原先value替換</p>
* <p>下标從0開始,offset表示從offset下标開始替換</p>
* <p>如果替換的字元串長度過小則會這樣</p>
* <p>example:</p>
* <p>value : [email protected]</p>
* <p>str : abc </p>
* <P>從下标7開始替換 則結果為</p>
* <p>RES : bigsea.abc.cn</p>
* @param key
* @param str
* @param offset 下标位置
* @return 傳回替換後 value 的長度
*/
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>通過批量的key擷取批量的value</p>
* @param keys string數組 也可以是一個key
* @return 成功傳回value的集合, 失敗傳回null的集合 ,異常傳回空
*/
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>批量的設定key:value,可以一個</p>
* <p>example:</p>
* <p> obj.mset(new String[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return 成功傳回OK 失敗 異常 傳回 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>批量的設定key:value,可以一個,如果key已經存在則會失敗,操作會復原</p>
* <p>example:</p>
* <p> obj.msetnx(new String[]{"key2","value1","key2","value2"})</p>
* @param keysvalues
* @return 成功傳回1 失敗傳回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>設定key的值,并傳回一個舊值</p>
* @param key
* @param value
* @return 舊值 如果key不存在 則傳回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>通過下标 和key 擷取指定下标位置的 value</p>
* @param key
* @param startOffset 開始位置 從0 開始 負數表示從右邊開始截取
* @param endOffset
* @return 如果沒有傳回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>通過key 對value進行加值+1操作,當value不是int類型時會傳回錯誤,當key不存在是則value為1</p>
* @param key
* @return 加值後的結果
*/
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>通過key給指定的value加值,如果key不存在,則這是value為該值</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>對key的值做減減操作,如果key不存在,則設定key為-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>減去指定的值</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>通過key擷取value值的長度</p>
* @param key
* @return 失敗傳回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>通過key給field設定指定的值,如果key不存在,則先建立</p>
* @param key
* @param field 字段
* @param value
* @return 如果存在傳回0 異常傳回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>通過key給field設定指定的值,如果key不存在則先建立,如果field已經存在,傳回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>通過key同時設定 hash的多個field</p>
* @param key
* @param hash
* @return 傳回OK 異常傳回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>通過key 和 field 擷取指定的 value</p>
* @param key
* @param field
* @return 沒有傳回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>通過key 和 fields 擷取指定的value 如果沒有對應的value則傳回null</p>
* @param key
* @param fields 可以使 一個String 也可以是 String數組
* @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>通過key給指定的field的value加上給定的值</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>通過key和field判斷是否有指定的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>通過key傳回field的數量</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>通過key 删除指定的 field </p>
* @param key
* @param fields 可以是 一個 field 也可以是 一個數組
* @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>通過key傳回所有的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>通過key傳回所有和key有關的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>通過key擷取所有的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>通過key向list頭部添加字元串</p>
* @param key
* @param strs 可以使一個string 也可以使string數組
* @return 傳回list的value個數
*/
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>通過key向list尾部添加字元串</p>
* @param key
* @param strs 可以使一個string 也可以使string數組
* @return 傳回list的value個數
*/
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>通過key在list指定的位置之前或者之後 添加字元串元素</p>
* @param key
* @param where LIST_POSITION枚舉類型
* @param pivot list裡面的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>通過key設定list指定下标位置的value</p>
* <p>如果下标超過list裡面value的個數則報錯</p>
* @param key
* @param index 從0開始
* @param value
* @return 成功傳回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>通過key從對應的list中删除指定的count個 和 value相同的元素</p>
* @param key
* @param count 當count為0時删除全部
* @param value
* @return 傳回被删除的個數
*/
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>通過key保留list中從strat下标開始到end下标結束的value值</p>
* @param key
* @param start
* @param end
* @return 成功傳回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>通過key從list的頭部删除一個value,并傳回該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>通過key從list尾部删除一個value,并傳回該元素</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>通過key從一個list的尾部删除一個value并添加到另一個list的頭部,并傳回該value</p>
* <p>如果第一個list為空或者不存在則傳回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>通過key擷取list中指定下标位置的value</p>
* @param key
* @param index
* @return 如果沒有傳回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>通過key傳回list的長度</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>通過key擷取list指定下标位置的value</p>
* <p>如果start 為 0 end 為 -1 則傳回全部的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>通過key向指定的set中添加value</p>
* @param key
* @param members 可以是一個String 也可以是一個String數組
* @return 添加成功的個數
*/
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>通過key删除set中對應的value值</p>
* @param key
* @param members 可以是一個String 也可以是一個String數組
* @return 删除的個數
*/
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>通過key随機删除一個set中的value并傳回該值</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>通過key擷取set中的差集</p>
* <p>以第一個set為标準</p>
* @param keys 可以使一個string 則傳回set中所有的value 也可以是string數組
* @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>通過key擷取set中的差集并存入到另一個key中</p>
* <p>以第一個set為标準</p>
* @param dstkey 差集存入的key
* @param keys 可以使一個string 則傳回set中所有的value 也可以是string數組
* @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>通過key擷取指定set中的交集</p>
* @param keys 可以使一個string 也可以是一個string數組
* @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>通過key擷取指定set中的交集 并将結果存入新的set中</p>
* @param dstkey
* @param keys 可以使一個string 也可以是一個string數組
* @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>通過key傳回所有set的并集</p>
* @param keys 可以使一個string 也可以是一個string數組
* @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>通過key傳回所有set的并集,并存入到新的set中</p>
* @param dstkey
* @param keys 可以使一個string 也可以是一個string數組
* @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>通過key将set中的value移除并添加到第二個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>通過key擷取set中value的個數</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>通過key判斷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>通過key擷取set中随機的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>通過key擷取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>通過key向zset中添加value,score,其中score就是用來排序的</p>
* <p>如果該value已經存在則根據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>通過key删除在zset中指定的value</p>
* @param key
* @param members 可以使一個string 也可以是一個string數組
* @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>通過key增加該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>通過key傳回zset中value的排名</p>
* <p>下标從小到大排序</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>通過key傳回zset中value的排名</p>
* <p>下标從大到小排序</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>通過key将擷取score從start到end中zset的value</p>
* <p>socre從大到小排序</p>
* <p>當start為0 end為-1時傳回全部</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>通過key傳回指定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>通過key傳回指定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>傳回指定區間内zset中value的數量</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>通過key傳回zset中的value個數</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>通過key擷取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>通過key删除給定區間内的元素</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>通過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>傳回滿足pattern表達式的所有key</p>
* <p>keys(*)</p>
* <p>傳回所有的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>通過key判斷值得類型</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;
}
/**
* 返還到連接配接池
*
* @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 秒内限制調用臨時放行接口totalCount次
* @param userMac 使用者mac 位址
* @param timeOut 多少秒内
* @param totalCount 總的次數
* @return
*/
public boolean allowLimitTimes(String userMac, int timeOut, int totalCount){
//次數key
String key="allowTimes_"+userMac;
boolean result=false;
try{
Long ttl = redisUtil.ttl(key);
if (ttl > 0) {
//第幾次通路
Long nowTimes = redisUtil.incr(key);
if (nowTimes > totalCount) {
logger.error("key:{},超出{}秒内允許通路{}次的限制,這是第{}次通路", new Object[] { key, timeOut, totalCount, nowTimes});
}
else {
result = true;
}
}
else if (ttl == -1 || ttl == -2 || ttl == 0) {//逾時不存在key
redisUtil.setex(key,"1",timeOut);
result=true;
}
}
catch(Exception e){
logger.error("OpenPlatformService.allowLimitTimes error:",e);
}
return result;
} 使用：
30分鐘内限制5次請求進來
if(allowLimitTimes("fc:e9:98:3e:24:37",1800,5)){
//業務邏輯
} | 作者：no-npe 出處：https://www.cnblogs.com/geekdc 本文版權歸作者和部落格園共有，歡迎轉載，但未經作者同意必須保留此聲明，且在文章頁面明顯位置給出原文連結，否則保留追究法律責任的權利。 由于作者個人水準有限，如果文中有什麼錯誤，歡迎指出。以免更多的人被誤導。 |