java JedisUtil 工具類連線redis伺服器
阿新 • • 發佈：2019-01-02
JedisUtils工具類如下：包含各種型別儲存和刪除 package com.telit.common.utils; import java.util.List; import java.util.Map; import java.util.Set; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.google.common.collect.Lists; import com.google.common.collect.Maps; import com.google.common.collect.Sets; import com.telit.common.config.Global; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.exceptions.JedisException; /** * Jedis Cache 工具類 * * @author zhoujielun * @version 2017-6-19 */ public class JedisUtils { private static Logger logger = LoggerFactory.getLogger(JedisUtils.class); private static JedisPool jedisPool = SpringContextHolder.getBean(JedisPool.class); public static final String KEY_PREFIX = Global.getConfig("redis.keyPrefix"); /** * 獲取快取 * @param key 鍵 * @return 值 */ public static String get(String key) { String value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.get(key); value = StringUtils.isNotBlank(value) && !"nil".equalsIgnoreCase(value) ? value : null; logger.debug("get {} = {}", key, value); } } catch (Exception e) { logger.warn("get {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 獲取快取 * @param key 鍵 * @return 值 */ public static Object getObject(String key) { Object value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = toObject(jedis.get(getBytesKey(key))); logger.debug("getObject {} = {}", key, value); } } catch (Exception e) { logger.warn("getObject {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 設定快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static String set(String key, String value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.set(key, value); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("set {} = {}", key, value); } catch (Exception e) { logger.warn("set {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 設定快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static String setObject(String key, Object value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.set(getBytesKey(key), toBytes(value)); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObject {} = {}", key, value); } catch (Exception e) { logger.warn("setObject {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 獲取List快取 * @param key 鍵 * @return 值 */ public static List<String> getList(String key) { List<String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.lrange(key, 0, -1); logger.debug("getList {} = {}", key, value); } } catch (Exception e) { logger.warn("getList {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 獲取List快取 * @param key 鍵 * @return 值 */ public static List<Object> getObjectList(String key) { List<Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { List<byte[]> list = jedis.lrange(getBytesKey(key), 0, -1); value = Lists.newArrayList(); for (byte[] bs : list){ value.add(toObject(bs)); } logger.debug("getObjectList {} = {}", key, value); } } catch (Exception e) { logger.warn("getObjectList {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 設定List快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static long setList(String key, List<String> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.rpush(key, (String[])value.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setList {} = {}", key, value); } catch (Exception e) { logger.warn("setList {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 設定List快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static long setObjectList(String key, List<Object> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } List<byte[]> list = Lists.newArrayList(); for (Object o : value){ list.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][])list.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectList {} = {}", key, value); } catch (Exception e) { logger.warn("setObjectList {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向List快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static long listAdd(String key, String... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.rpush(key, value); logger.debug("listAdd {} = {}", key, value); } catch (Exception e) { logger.warn("listAdd {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向List快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static long listObjectAdd(String key, Object... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); List<byte[]> list = Lists.newArrayList(); for (Object o : value){ list.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][])list.toArray()); logger.debug("listObjectAdd {} = {}", key, value); } catch (Exception e) { logger.warn("listObjectAdd {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 獲取快取 * @param key 鍵 * @return 值 */ public static Set<String> getSet(String key) { Set<String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.smembers(key); logger.debug("getSet {} = {}", key, value); } } catch (Exception e) { logger.warn("getSet {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 獲取快取 * @param key 鍵 * @return 值 */ public static Set<Object> getObjectSet(String key) { Set<Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = Sets.newHashSet(); Set<byte[]> set = jedis.smembers(getBytesKey(key)); for (byte[] bs : set){ value.add(toObject(bs)); } logger.debug("getObjectSet {} = {}", key, value); } } catch (Exception e) { logger.warn("getObjectSet {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 設定Set快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static long setSet(String key, Set<String> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.sadd(key, (String[])value.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setSet {} = {}", key, value); } catch (Exception e) { logger.warn("setSet {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 設定Set快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static long setObjectSet(String key, Set<Object> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } Set<byte[]> set = Sets.newHashSet(); for (Object o : value){ set.add(toBytes(o)); } result = jedis.sadd(getBytesKey(key), (byte[][])set.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectSet {} = {}", key, value); } catch (Exception e) { logger.warn("setObjectSet {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向Set快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static long setSetAdd(String key, String... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.sadd(key, value); logger.debug("setSetAdd {} = {}", key, value); } catch (Exception e) { logger.warn("setSetAdd {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向Set快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static long setSetObjectAdd(String key, Object... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); Set<byte[]> set = Sets.newHashSet(); for (Object o : value){ set.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][])set.toArray()); logger.debug("setSetObjectAdd {} = {}", key, value); } catch (Exception e) { logger.warn("setSetObjectAdd {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 獲取Map快取 * @param key 鍵 * @return 值 */ public static Map<String, String> getMap(String key) { Map<String, String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.hgetAll(key); logger.debug("getMap {} = {}", key, value); } } catch (Exception e) { logger.warn("getMap {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 獲取Map快取 * @param key 鍵 * @return 值 */ public static Map<String, Object> getObjectMap(String key) { Map<String, Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = Maps.newHashMap(); Map<byte[], byte[]> map = jedis.hgetAll(getBytesKey(key)); for (Map.Entry<byte[], byte[]> e : map.entrySet()){ value.put(StringUtils.toString(e.getKey()), toObject(e.getValue())); } logger.debug("getObjectMap {} = {}", key, value); } } catch (Exception e) { logger.warn("getObjectMap {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 設定Map快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static String setMap(String key, Map<String, String> value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.hmset(key, value); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setMap {} = {}", key, value); } catch (Exception e) { logger.warn("setMap {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 設定Map快取 * @param key 鍵 * @param value 值 * @param cacheSeconds 超時時間，0為不超時 * @return */ public static String setObjectMap(String key, Map<String, Object> value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } Map<byte[], byte[]> map = Maps.newHashMap(); for (Map.Entry<String, Object> e : value.entrySet()){ map.put(getBytesKey(e.getKey()), toBytes(e.getValue())); } result = jedis.hmset(getBytesKey(key), (Map<byte[], byte[]>)map); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectMap {} = {}", key, value); } catch (Exception e) { logger.warn("setObjectMap {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向Map快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static String mapPut(String key, Map<String, String> value) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.hmset(key, value); logger.debug("mapPut {} = {}", key, value); } catch (Exception e) { logger.warn("mapPut {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 向Map快取中新增值 * @param key 鍵 * @param value 值 * @return */ public static String mapObjectPut(String key, Map<String, Object> value) { String result = null; Jedis jedis = null; try { jedis = getResource(); Map<byte[], byte[]> map = Maps.newHashMap(); for (Map.Entry<String, Object> e : value.entrySet()){ map.put(getBytesKey(e.getKey()), toBytes(e.getValue())); } result = jedis.hmset(getBytesKey(key), (Map<byte[], byte[]>)map); logger.debug("mapObjectPut {} = {}", key, value); } catch (Exception e) { logger.warn("mapObjectPut {} = {}", key, value, e); } finally { returnResource(jedis); } return result; } /** * 移除Map快取中的值 * @param key 鍵 * @param value 值 * @return */ public static long mapRemove(String key, String mapKey) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.hdel(key, mapKey); logger.debug("mapRemove {} {}", key, mapKey); } catch (Exception e) { logger.warn("mapRemove {} {}", key, mapKey, e); } finally { returnResource(jedis); } return result; } /** * 移除Map快取中的值 * @param key 鍵 * @param value 值 * @return */ public static long mapObjectRemove(String key, String mapKey) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.hdel(getBytesKey(key), getBytesKey(mapKey)); logger.debug("mapObjectRemove {} {}", key, mapKey); } catch (Exception e) { logger.warn("mapObjectRemove {} {}", key, mapKey, e); } finally { returnResource(jedis); } return result; } /** * 判斷Map快取中的Key是否存在 * @param key 鍵 * @param value 值 * @return */ public static boolean mapExists(String key, String mapKey) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.hexists(key, mapKey); logger.debug("mapExists {} {}", key, mapKey); } catch (Exception e) { logger.warn("mapExists {} {}", key, mapKey, e); } finally { returnResource(jedis); } return result; } /** * 判斷Map快取中的Key是否存在 * @param key 鍵 * @param value 值 * @return */ public static boolean mapObjectExists(String key, String mapKey) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.hexists(getBytesKey(key), getBytesKey(mapKey)); logger.debug("mapObjectExists {} {}", key, mapKey); } catch (Exception e) { logger.warn("mapObjectExists {} {}", key, mapKey, e); } finally { returnResource(jedis); } return result; } /** * 刪除快取 * @param key 鍵 * @return */ public static long del(String key) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)){ result = jedis.del(key); logger.debug("del {}", key); }else{ logger.debug("del {} not exists", key); } } catch (Exception e) { logger.warn("del {}", key, e); } finally { returnResource(jedis); } return result; } /** * 刪除快取 * @param key 鍵 * @return */ public static long delObject(String key) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))){ result = jedis.del(getBytesKey(key)); logger.debug("delObject {}", key); }else{ logger.debug("delObject {} not exists", key); } } catch (Exception e) { logger.warn("delObject {}", key, e); } finally { returnResource(jedis); } return result; } /** * 快取是否存在 * @param key 鍵 * @return */ public static boolean exists(String key) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.exists(key); logger.debug("exists {}", key); } catch (Exception e) { logger.warn("exists {}", key, e); } finally { returnResource(jedis); } return result; } /** * 快取是否存在 * @param key 鍵 * @return */ public static boolean existsObject(String key) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.exists(getBytesKey(key)); logger.debug("existsObject {}", key); } catch (Exception e) { logger.warn("existsObject {}", key, e); } finally { returnResource(jedis); } return result; } /** * 獲取資源 * @return * @throws JedisException */ public static Jedis getResource() throws JedisException { Jedis jedis = null; try { jedis = jedisPool.getResource(); // logger.debug("getResource.", jedis); } catch (JedisException e) { logger.warn("getResource.", e); returnBrokenResource(jedis); throw e; } return jedis; } /** * 歸還資源 * @param jedis * @param isBroken */ public static void returnBrokenResource(Jedis jedis) { if (jedis != null) { jedisPool.returnBrokenResource(jedis); } } /** * 釋放資源 * @param jedis * @param isBroken */ public static void returnResource(Jedis jedis) { if (jedis != null) { jedisPool.returnResource(jedis); } } /** * 獲取byte[]型別Key * @param key * @return */ public static byte[] getBytesKey(Object object){ if(object instanceof String){ return StringUtils.getBytes((String)object); }else{ return ObjectUtils.serialize(object); } } /** * Object轉換byte[]型別 * @param key * @return */ public static byte[] toBytes(Object object){ return ObjectUtils.serialize(object); } /** * byte[]型轉換Object * @param key * @return */ public static Object toObject(byte[] bytes){ return ObjectUtils.unserialize(bytes); } }
3.web專案spring框架下，新增spring-context-jedis.xml檔案，檔案內容如下：
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd" default-lazy-init="true"> <description>Jedis Configuration</description> <!-- 載入配置屬性檔案 --> <context:property-placeholder ignore-unresolvable="true" location="classpath:telit.properties" /> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxIdle" value="300" /> <!-- 最大能夠保持idel狀態的物件數 --> <property name="maxTotal" value="60000" /> <!-- 最大分配的物件數 --> <property name="testOnBorrow" value="true" /> <!-- 當呼叫borrow Object方法時，是否進行有效性檢查 --> </bean> <bean id="jedisPool" class="redis.clients.jedis.JedisPool"> <constructor-arg index="0" ref="jedisPoolConfig" /> <constructor-arg index="1" value="127.0.0.1" /> <constructor-arg index="2" value="6379" type="int" /> </bean> </beans>
4.配置完成，即可使用JedisUtils 工具類呼叫redis服務了，字串、map、list、json等型別的儲存和刪除等。