redis在Java web项目的简单应用
来源：互联网 发布：php 判断域名 编辑：程序博客网 时间：2024/04/17 04:09
一.准备要使用的的jar包,我使用了以下jar包，关于json的jar包是方便存储和转换redis用到的值;
二.编写加载redis是要用到的实例类
package com.redis;import redis.clients.jedis.ShardedJedis;/** * @Title: RedisDataSource.java * @copyright * @Package com.cy.redis * @Description: 该接口用于获取redis客户端实例，通过该实例操作redis数据源 * @author * @date 2016-10-21 下午04:22:41 */public interface RedisDataSource {public abstract ShardedJedis getRedisClient();public void returnResource(ShardedJedis shardedJedis); public void returnResource(ShardedJedis shardedJedis,boolean broken);}package com.redis;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import redis.clients.jedis.ShardedJedis;import redis.clients.jedis.ShardedJedisPool;/** * @Title: RedisDataSourceImpl.java * @copyright * @Package com.cy.redis * @Description: 获取redis客户端实例，通过该实例操作redis数据源 * @author * @date 2016-10-21 下午04:22:54 */public class RedisDataSourceImpl implements RedisDataSource{private static final org.slf4j.Logger log = LoggerFactory.getLogger(RedisDataSourceImpl.class);@Autowiredprivate ShardedJedisPool shardedJedisPool;public ShardedJedisPool getShardedJedisPool() {return shardedJedisPool;}public void setShardedJedisPool(ShardedJedisPool shardedJedisPool) {this.shardedJedisPool = shardedJedisPool;}/** * 获取redis客户端 */public ShardedJedis getRedisClient() {try {ShardedJedis shardedJedis=shardedJedisPool.getResource();return shardedJedis;} catch (Exception e) {log.error("getRedisClient ,error",e);e.printStackTrace();}return null;}/** * 将资源返还给pool */@SuppressWarnings("deprecation")public void returnResource(ShardedJedis shardedJedis) {shardedJedisPool.returnResource(shardedJedis);}/** * 出现异常后返回资源给pool */@SuppressWarnings("deprecation")public void returnResource(ShardedJedis shardedJedis, boolean broken) {if(broken){shardedJedisPool.returnBrokenResource(shardedJedis);}else{shardedJedisPool.returnResource(shardedJedis);}}}package com.redis;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisShardInfo;import redis.clients.jedis.ShardedJedis;/** * @Title: RedisClientTemplate.java * @copyright * @Package com.cy.redis * @Description: 用于操作redis取值、存值操作的工具类 * @author * @date 2016-10-21 下午04:21:59 */public class RedisClientTemplate {private static final org.slf4j.Logger log=LoggerFactory.getLogger(RedisClientTemplate.class);@Autowiredprivate RedisDataSource redisDataSource;public RedisDataSource getRedisDataSource() {return redisDataSource;}public void setRedisDataSource(RedisDataSource redisDataSource) {this.redisDataSource = redisDataSource;}public void disconnect(){ShardedJedis shardedJedis=redisDataSource.getRedisClient();shardedJedis.disconnect();}/*** @Description: 在redis里设置单个值* @author Mr.chen* @date 2016-10-21 下午04:37:06 */public String set(String key, String value){String result=null;ShardedJedis shardedJedis=redisDataSource.getRedisClient();if(shardedJedis==null){return result;}boolean broken=false;try {result=shardedJedis.set(key, value);} catch (Exception e) {broken=true;e.printStackTrace();}finally{redisDataSource.returnResource(shardedJedis, broken);}return result;}/*** @Description: 获取redis单个值 * @author Mr.chen* @date 2016-10-21 下午04:40:57 */public String get(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.get(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }/*** @Description: 判断redis是否存在key* @author Mr.chen* @date 2016-10-21 下午04:41:39 */public Boolean exists(String key) { Boolean result = false; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.exists(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }/*** @Description: 获取key返回存储值的类型 * @author Mr.chen* @date 2016-10-21 下午04:42:08 */public String type(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.type(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }/*** @Description: 在某段时间后实现* @author Mr.chen* @date 2016-10-21 下午04:43:25 */ public Long expire(String key, int seconds) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.expire(key, seconds); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * @Description: 在某个时间点失效 * @author Mr.chen * @date 2016-10-21 下午04:43:40 */ public Long expireAt(String key, long unixTime) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.expireAt(key, unixTime); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * @Description: 以秒为单位，返回给定 key 的剩余生存时间 * @author Mr.chen * @date 2016-10-21 下午04:44:00 */ public Long ttl(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.ttl(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * @Description: 将 key 的值设为 value ，当且仅当 key 不存在 * @author Mr.chen * @date 2016-10-21 下午04:44:17 */ public Long setnx(String key, String value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.setnx(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将值 value 关联到 key ，并将 key 的生存时间设为 seconds (以秒为单位) * @param key * @param seconds * @param value * @return */ public String setex(String key, int seconds, String value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.setex(key, seconds, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将 key 所储存的值减去减量 integer * @param key * @param integer * @return */ public Long decrBy(String key, long integer) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.decrBy(key, integer); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将 key 中储存的数字值减一。 * @param key * @return */ public Long decr(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.decr(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将 key 所储存的值加上增量 integer * @param key * @param integer * @return */ public Long incrBy(String key, long integer) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.incrBy(key, integer); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将 key 中储存的数字值增一 * @param key * @return */ public Long incr(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.incr(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 如果 key 已经存在并且是一个字符串， APPEND 命令将 value 追加到 key 原来的值的末尾。 * 如果 key 不存在， APPEND 就简单地将给定 key 设为 value ，就像执行 SET key value 一样。 * @param key * @param value * @return */ public Long append(String key, String value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.append(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回名称为key的string的value的子串 * @param key * @param start * @param end * @return */ public String substr(String key, int start, int end) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.substr(key, start, end); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将哈希表 key 中的域 field 的值设为 value * @param key * @param field * @param value * @return */ public Long hset(String key, String field, String value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hset(key, field, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中给定域 field 的值 * @param key * @param field * @return */ public String hget(String key, String field) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hget(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 同时将多个 field-value (域-值)对设置到哈希表 key 中。 * @param key * @param hash * @return */ public String hmset(String key, Map<String, String> hash) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hmset(key, hash); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中，一个或多个给定域的值 * @param key * @param fields * @return */ public List<String> hmget(String key, String... fields) { List<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hmget(key, fields); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 为哈希表 key 中的域 field 的值加上增量 value * @param key * @param field * @param value * @return */ public Long hincrBy(String key, String field, long value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hincrBy(key, field, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 查看哈希表 key 中，给定域 field 是否存在。 * @param key * @param field * @return */ public Boolean hexists(String key, String field) { Boolean result = false; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hexists(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 删除key * @param key * @return */ public Long del(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.del(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 删除哈希表 key 中的一个或多个指定域。 * @param key * @param field * @return */ public Long hdel(String key, String field) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hdel(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中域的数量。 * @param key * @return */ public Long hlen(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hlen(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中的所有域。 * @param key * @return */ public Set<String> hkeys(String key) { Set<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hkeys(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中所有域的值。 * @param key * @return */ public List<String> hvals(String key) { List<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hvals(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回哈希表 key 中，所有的域和值。 * @param key * @return */ public Map<String, String> hgetAll(String key) { Map<String, String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hgetAll(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } // ================list ====== l表示 list或 left, r表示right==================== /** * 将一个或多个值 value 插入到列表 key 的表尾(最右边) * @param key * @param string * @return */ public Long rpush(String key, String string) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.rpush(key, string); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将一个或多个值 value 插入到列表 key 的表头 * @param key * @param string * @return */ public Long lpush(String key, String string) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lpush(key, string); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回列表 key 的长度。 * @param key * @return */ public Long llen(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.llen(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回列表 key 中指定区间内的元素，区间以偏移量 start 和 stop 指定 * @param key * @param start * @param end * @return */ public List<String> lrange(String key, long start, long end) { List<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lrange(key, start, end); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 只保留指定区间内的元素，不在指定区间之内的元素都将被删除 * @param key * @param start * @param end * @return */ public String ltrim(String key, long start, long end) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.ltrim(key, start, end); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回列表 key 中，下标为 index 的元素。 * @param key * @param index * @return */ public String lindex(String key, long index) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lindex(key, index); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将列表 key 下标为 index 的元素的值设置为 value * @param key * @param index * @param value * @return */ public String lset(String key, long index, String value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lset(key, index, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 移除并返回列表 key 的头元素 * @param key * @return */ public String lpop(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lpop(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 移除并返回列表 key 的尾元素。 * @param key * @return */ public String rpop(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.rpop(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } //return 1 add a not exist value , //return 0 add a exist value /** * 将一个或多个 member 元素加入到集合 key 当中 * @param key * @param member * @return */ public Long sadd(String key, String member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.sadd(key, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回集合 key 中的所有成员。 * @param key * @return */ public Set<String> smembers(String key) { Set<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.smembers(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回集合 key 的基数(集合中元素的数量) * @param key * @return */ public Long scard(String key) { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); Long result = null; if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.scard(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 将一个或多个 member 元素及其 score 值加入到有序集 key 当中 * @param key * @param score * @param member * @return */ public Long zadd(String key, double score, String member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zadd(key, score, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回有序集 key 中，指定区间内的成员 * @param key * @param start * @param end * @return */ public Set<String> zrange(String key, int start, int end) { Set<String> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zrange(key, start, end); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 移除有序集 key 中的一个或多个成员，不存在的成员将被忽略 * @param key * @param member * @return */ public Long zrem(String key, String member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zrem(key, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 为有序集 key 的成员 member 的 score 值加上增量 member 。 * @param key * @param score * @param member * @return */ public Double zincrby(String key, double score, String member) { Double result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zincrby(key, score, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 回有序集 key 中成员 member 的排名。其中有序集成员按 score 值递增(从小到大)顺序排列 * @param key * @param member * @return */ public Long zrank(String key, String member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zrank(key, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回有序集 key 的基数 * @param key * @return */ public Long zcard(String key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zcard(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回有序集 key 中，成员 member 的 score 值。 * @param key * @param member * @return */ public Double zscore(String key, String member) { Double result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zscore(key, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 返回有序集 key 中， score 值在 min 和 max 之间(默认包括 score 值等于 min 或 max )的成员的数量 * @param key * @param min * @param max * @return */ public Long zcount(String key, double min, double max) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zcount(key, min, max); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 批量存储 * @param key * @param value * @return */ public String set(byte[] key, byte[] value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.set(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 获取多个key的值 * @param key * @return */ public byte[] get(byte[] key) { byte[] result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.get(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 判断多个key存在 * @param key * @return */ public Boolean exists(byte[] key) { Boolean result = false; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.exists(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long expire(byte[] key, int seconds) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.expire(key, seconds); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long expireAt(byte[] key, long unixTime) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.expireAt(key, unixTime); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long ttl(byte[] key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.ttl(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long append(byte[] key, byte[] value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.append(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 批量增加到hash * @param key * @param field * @param value * @return */ public Long hset(byte[] key, byte[] field, byte[] value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hset(key, field, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 批量获取field域值 * @param key * @param field * @return */ public byte[] hget(byte[] key, byte[] field) { byte[] result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hget(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public String hmset(byte[] key, Map<byte[], byte[]> hash) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hmset(key, hash); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public List<byte[]> hmget(byte[] key, byte[]... fields) { List<byte[]> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hmget(key, fields); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Boolean hexists(byte[] key, byte[] field) { Boolean result = false; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hexists(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 批量删除hash的key * @param key * @param field * @return */ public Long hdel(byte[] key, byte[] field) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.hdel(key, field); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long rpush(byte[] key, byte[] string) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.rpush(key, string); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long lpush(byte[] key, byte[] string) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lpush(key, string); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long llen(byte[] key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.llen(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public List<byte[]> lrange(byte[] key, int start, int end) { List<byte[]> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lrange(key, start, end); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public String lset(byte[] key, int index, byte[] value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lset(key, index, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long lrem(byte[] key, int count, byte[] value) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lrem(key, count, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public byte[] lpop(byte[] key) { byte[] result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.lpop(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public byte[] rpop(byte[] key) { byte[] result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.rpop(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 批量增加到set * @param key * @param member * @return */ public Long sadd(byte[] key, byte[] member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.sadd(key, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Set<byte[]> smembers(byte[] key) { Set<byte[]> result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.smembers(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long scard(byte[] key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.scard(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long zadd(byte[] key, double score, byte[] member) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zadd(key, score, member); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Long zcard(byte[] key) { Long result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.zcard(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public JedisShardInfo getShardInfo(String key) { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); JedisShardInfo result = null; if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.getShardInfo(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Collection<JedisShardInfo> getAllShardInfo() { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); Collection<JedisShardInfo> result = null; if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.getAllShardInfo(); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } public Collection<Jedis> getAllShards() { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); Collection<Jedis> result = null; if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.getAllShards(); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }}三.配置spring xml文件
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="2048" /> <property name="maxIdle" value="200" /> <property name="numTestsPerEvictionRun" value="1024"/> <property name="timeBetweenEvictionRunsMillis" value="30000" /> <property name="minEvictableIdleTimeMillis" value="-1" /> <property name="softMinEvictableIdleTimeMillis" value="10000" /> <property name="maxWaitMillis" value="1500"/> <property name="testOnBorrow" value="true" /> <property name="testWhileIdle" value="true"/> <property name="testOnReturn" value="false"/> <property name="jmxEnabled" value="true"/> <property name="blockWhenExhausted" value="false"/> </bean> <bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool"> <constructor-arg index="0" ref="jedisPoolConfig" /> <constructor-arg index="1"> <list> <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg name="host" value="127.0.0.1" /> <constructor-arg name="port" value="6379" /> <constructor-arg name="timeout" value="10000" /> </bean> </list> </constructor-arg> </bean> <bean id="redisDataSource" class="redis.dao.RedisDataSourceImpl"> <property name="shardedJedisPool" ref="shardedJedisPool"></property> </bean> <bean id="redisClientTemplate" class="redis.dao.RedisClientTemplate"> <property name="redisDataSource" ref="redisDataSource"></property> </bean></beans>
四.代码中的使用，原则就是在执行service时，先通过key到redis里检测是否存在，如果存在则在redis里去数据,如果没有则到数据库去数据,然后存到redis里
public class StudentinfoServiceImpl implements StudentinfoService{private StudentinfoDao studentinfoDao;private RedisClientTemplate redisClientTemplate;private static final ObjectMapper mapper=new ObjectMapper();public List<Studentinfo> getStudentinfoByStu(Studentinfo stu) {String key="getStudentinfoByStu:usernumber:"+stu.getUsernumber()+":name:"+stu.getName()+":idnumber:"+stu.getIdnumber();try {boolean flag=redisClientTemplate.exists(key);if(flag){String stuJsonStr=redisClientTemplate.get(key);List<Studentinfo> list=mapper.readValue(stuJsonStr, new TypeReference<List<Studentinfo>>() {});return list;}} catch (Exception e) {e.printStackTrace();}String hql="from Studentinfo where 1=1";if(stu!=null){if(stu.getUsernumber()!=null){hql+=" and usernumber like '%"+stu.getUsernumber()+"%' ";}}List<Studentinfo> list = studentinfoDao.getStudentinfoByStu(hql);try {String stuJsonStr=mapper.writeValueAsString(list);redisClientTemplate.setex(key, 60, stuJsonStr);} catch (Exception e) {e.printStackTrace();}return list;}public StudentinfoDao getStudentinfoDao() {return studentinfoDao;}public void setStudentinfoDao(StudentinfoDao studentinfoDao) {this.studentinfoDao = studentinfoDao;}public RedisClientTemplate getRedisClientTemplate() {return redisClientTemplate;}public void setRedisClientTemplate(RedisClientTemplate redisClientTemplate) {this.redisClientTemplate = redisClientTemplate;}} 4 1
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