redis+Spring初级应用
<!-- spring-redis实现 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-pool2</artifactId> <version>2.4.2</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-commons</artifactId> <version>1.13.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>1.6.2.RELEASE</version> </dependency> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency> <!-- Ehcache实现,用于参考 --> <dependency> <artifactId>ehcache</artifactId> <groupId>net.sf.ehcache</groupId> <version>2.7.2</version> </dependency> <!-- jackson --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.0</version> </dependency>
redis.properties
redis.host=119.29.79.250
redis.port=6379
redis.pass=****
redis.dbIndex=0
redis.expiration=3000
redis.maxIdle=300
redis.maxActive=600
redis.maxWait=1000
redis.testOnBorrow=true
Spring-redis.xml
<?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" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:cache="http://www.springframework.org/schema/cache" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.1.xsd"> <aop:config proxy-target-class="true" /> <cache:annotation-driven cache-manager="redisCacheManager"/> <context:property-placeholder location="classpath*:redis.properties" /> <!-- redis数据源 --> <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxIdle" value="${redis.maxIdle}" /> <property name="maxTotal" value="${redis.maxActive}" /> <property name="maxWaitMillis" value="${redis.maxWait}" /> <property name="testOnBorrow" value="${redis.testOnBorrow}" /> </bean> <!-- Spring-redis连接池管理工厂 --> <!-- 连接池配置，类似数据库连接池 --> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"> <property name="hostName" value="${redis.host}"></property> <property name="port" value="${redis.port}"></property> <property name="password" value="${redis.pass}"></property> <property name="poolConfig" ref="poolConfig"></property> </bean> <!-- redis template --> <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate"> <property name="connectionFactory" ref="jedisConnectionFactory" /> <!--如果不配置Serializer，那么存储的时候缺省使用String，如果用User类型存储，那么会提示错误User can't cast to String！！ --> <property name="keySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="valueSerializer"> <bean class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" /> </property> <property name="hashKeySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="hashValueSerializer"> <bean class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" /> </property> <!--开启事务 --> <property name="enableTransactionSupport" value="true"></property> </bean> <!-- 配置RedisCacheManager --> <bean id="redisCacheManager" class="org.springframework.data.redis.cache.RedisCacheManager"> <constructor-arg name="redisOperations" ref="redisTemplate" /> <property name="defaultExpiration" value="${redis.expiration}" /> </bean> <!-- 配置RedisCacheConfig --> <bean id="redisCacheConfig" class="luowuhui.redis.config.RedisCacheConfig"> <constructor-arg ref="jedisConnectionFactory"/> <constructor-arg ref="redisTemplate"/> <constructor-arg ref="redisCacheManager"/> </bean> </beans>
RedisCacheConfig.java
package luowuhui.redis.config; import java.lang.reflect.Method; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.interceptor.CacheErrorHandler; import org.springframework.cache.interceptor.CacheResolver; import org.springframework.cache.interceptor.KeyGenerator; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.cache.RedisCacheManager; import org.springframework.data.redis.connection.jedis.JedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; @EnableCaching @Configuration public class RedisCacheConfig extends CachingConfigurerSupport { private volatile JedisConnectionFactory jedisConnectionFactory; private volatile RedisTemplate<String, Object> redisTemplate; private volatile RedisCacheManager redisCacheManager; public RedisCacheConfig() { super(); } /** * 带参数的构造方法 初始化所有的成员变量 * * @param jedisConnectionFactory * @param redisTemplate * @param redisCacheManager */ public RedisCacheConfig(JedisConnectionFactory jedisConnectionFactory, RedisTemplate<String, Object> redisTemplate, RedisCacheManager redisCacheManager) { this.jedisConnectionFactory = jedisConnectionFactory; this.redisTemplate = redisTemplate; this.redisCacheManager = redisCacheManager; } public JedisConnectionFactory getJedisConnectionFactory() { return jedisConnectionFactory; } public RedisTemplate<String, Object> getRedisTemplate() { return redisTemplate; } public RedisCacheManager getRedisCacheManager() { return redisCacheManager; } @Bean public KeyGenerator keyGenerator() { return new KeyGenerator() { @Override public Object generate(Object o, Method method, Object... params) { //规定 本类名+方法名+参数名 为key StringBuilder sb = new StringBuilder(); sb.append(o.getClass().getName()); sb.append("-"); sb.append(method.getName()); sb.append("-"); for (Object param : params) { sb.append(param.toString()); } return sb.toString(); } }; } }
RedisUtil.java
package luowuhui.redis.pool; import java.util.List; import java.util.Map; import java.util.Set; import java.util.concurrent.TimeUnit; import javax.annotation.Resource; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.stereotype.Component; import org.springframework.util.CollectionUtils; /** * * @author QLQ * 基于spring和redis的redisTemplate工具类 * 针对所有的hash 都是以h开头的方法 * 针对所有的Set 都是以s开头的方法 不含通用方法 * 针对所有的List 都是以l开头的方法 */ @Component//交给Spring管理(在需要缓存的地方自动注入即可使用) public class RedisUtil { @Resource private RedisTemplate<String, Object> redisTemplate; public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) { this.redisTemplate = redisTemplate; } //=============================common============================ /** * 指定缓存失效时间 * @param key 键 * @param time 时间(秒) * @return */ public boolean expire(String key,long time){ try { if(time>0){ redisTemplate.expire(key, time, TimeUnit.SECONDS); } return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 根据key 获取过期时间 * @param key 键 不能为null * @return 时间(秒) 返回0代表为永久有效 */ public long getExpire(String key){ return redisTemplate.getExpire(key,TimeUnit.SECONDS); } /** * 判断key是否存在 * @param key 键 * @return true 存在 false不存在 */ public boolean hasKey(String key){ try { return redisTemplate.hasKey(key); } catch (Exception e) { e.printStackTrace(); return false; } } /** * 删除缓存 * @param key 可以传一个值 或多个 */ @SuppressWarnings("unchecked") public void del(String ... key){ if(key!=null&&key.length>0){ if(key.length==1){ redisTemplate.delete(key[0]); }else{ redisTemplate.delete(CollectionUtils.arrayToList(key)); } } } //============================String============================= /** * 普通缓存获取 * @param key 键 * @return 值 */ public Object get(String key){ return key==null?null:redisTemplate.opsForValue().get(key); } /** * 普通缓存放入 * @param key 键 * @param value 值 * @return true成功 false失败 */ public boolean set(String key,Object value) { try { redisTemplate.opsForValue().set(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 普通缓存放入并设置时间 * @param key 键 * @param value 值 * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期 * @return true成功 false 失败 */ public boolean set(String key,Object value,long time){ try { if(time>0){ redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS); }else{ set(key, value); } return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 递增 * @param key 键 * @param by 要增加几(大于0) * @return */ public long incr(String key, long delta){ if(delta<0){ throw new RuntimeException("递增因子必须大于0"); } return redisTemplate.opsForValue().increment(key, delta); } /** * 递减 * @param key 键 * @param by 要减少几(小于0) * @return */ public long decr(String key, long delta){ if(delta<0){ throw new RuntimeException("递减因子必须大于0"); } return redisTemplate.opsForValue().increment(key, -delta); } //================================Map================================= /** * HashGet * @param key 键 不能为null * @param item 项 不能为null * @return 值 */ public Object hget(String key,String item){ return redisTemplate.opsForHash().get(key, item); } /** * 获取hashKey对应的所有键值 * @param key 键 * @return 对应的多个键值 */ public Map<Object,Object> hmget(String key){ return redisTemplate.opsForHash().entries(key); } /** * HashSet * @param key 键 * @param map 对应多个键值 * @return true 成功 false 失败 */ public boolean hmset(String key, Map<String,Object> map){ try { redisTemplate.opsForHash().putAll(key, map); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * HashSet 并设置时间 * @param key 键 * @param map 对应多个键值 * @param time 时间(秒) * @return true成功 false失败 */ public boolean hmset(String key, Map<String,Object> map, long time){ try { redisTemplate.opsForHash().putAll(key, map); if(time>0){ expire(key, time); } return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 向一张hash表中放入数据,如果不存在将创建 * @param key 键 * @param item 项 * @param value 值 * @return true 成功 false失败 */ public boolean hset(String key,String item,Object value) { try { redisTemplate.opsForHash().put(key, item, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 向一张hash表中放入数据,如果不存在将创建 * @param key 键 * @param item 项 * @param value 值 * @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间 * @return true 成功 false失败 */ public boolean hset(String key,String item,Object value,long time) { try { redisTemplate.opsForHash().put(key, item, value); if(time>0){ expire(key, time); } return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 删除hash表中的值 * @param key 键 不能为null * @param item 项 可以使多个 不能为null */ public void hdel(String key, Object... item){ redisTemplate.opsForHash().delete(key,item); } /** * 判断hash表中是否有该项的值 * @param key 键 不能为null * @param item 项 不能为null * @return true 存在 false不存在 */ public boolean hHasKey(String key, String item){ return redisTemplate.opsForHash().hasKey(key, item); } /** * hash递增 如果不存在,就会创建一个 并把新增后的值返回 * @param key 键 * @param item 项 * @param by 要增加几(大于0) * @return */ public double hincr(String key, String item,double by){ return redisTemplate.opsForHash().increment(key, item, by); } /** * hash递减 * @param key 键 * @param item 项 * @param by 要减少记(小于0) * @return */ public double hdecr(String key, String item,double by){ return redisTemplate.opsForHash().increment(key, item,-by); } //============================set============================= /** * 根据key获取Set中的所有值 * @param key 键 * @return */ public Set<Object> sGet(String key){ try { return redisTemplate.opsForSet().members(key); } catch (Exception e) { e.printStackTrace(); return null; } } /** * 根据value从一个set中查询,是否存在 * @param key 键 * @param value 值 * @return true 存在 false不存在 */ public boolean sHasKey(String key,Object value){ try { return redisTemplate.opsForSet().isMember(key, value); } catch (Exception e) { e.printStackTrace(); return false; } } /** * 将数据放入set缓存 * @param key 键 * @param values 值 可以是多个 * @return 成功个数 */ public long sSet(String key, Object...values) { try { return redisTemplate.opsForSet().add(key, values); } catch (Exception e) { e.printStackTrace(); return 0; } } /** * 将set数据放入缓存 * @param key 键 * @param time 时间(秒) * @param values 值 可以是多个 * @return 成功个数 */ public long sSetAndTime(String key,long time,Object...values) { try { Long count = redisTemplate.opsForSet().add(key, values); if(time>0) expire(key, time); return count; } catch (Exception e) { e.printStackTrace(); return 0; } } /** * 获取set缓存的长度 * @param key 键 * @return */ public long sGetSetSize(String key){ try { return redisTemplate.opsForSet().size(key); } catch (Exception e) { e.printStackTrace(); return 0; } } /** * 移除值为value的 * @param key 键 * @param values 值 可以是多个 * @return 移除的个数 */ public long setRemove(String key, Object ...values) { try { Long count = redisTemplate.opsForSet().remove(key, values); return count; } catch (Exception e) { e.printStackTrace(); return 0; } } //===============================list================================= /** * 获取list缓存的内容 * @param key 键 * @param start 开始 * @param end 结束 0 到 -1代表所有值 * @return */ public List<Object> lGet(String key,long start, long end){ try { return redisTemplate.opsForList().range(key, start, end); } catch (Exception e) { e.printStackTrace(); return null; } } /** * 获取list缓存的长度 * @param key 键 * @return */ public long lGetListSize(String key){ try { return redisTemplate.opsForList().size(key); } catch (Exception e) { e.printStackTrace(); return 0; } } /** * 通过索引 获取list中的值 * @param key 键 * @param index 索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推 * @return */ public Object lGetIndex(String key,long index){ try { return redisTemplate.opsForList().index(key, index); } catch (Exception e) { e.printStackTrace(); return null; } } /** * 将list放入缓存 * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, Object value) { try { redisTemplate.opsForList().rightPush(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 将list放入缓存 * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, Object value, long time) { try { redisTemplate.opsForList().rightPush(key, value); if (time > 0) expire(key, time); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 将list放入缓存 * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, List<Object> value) { try { redisTemplate.opsForList().rightPushAll(key, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 将list放入缓存 * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, List<Object> value, long time) { try { redisTemplate.opsForList().rightPushAll(key, value); if (time > 0) expire(key, time); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 根据索引修改list中的某条数据 * @param key 键 * @param index 索引 * @param value 值 * @return */ public boolean lUpdateIndex(String key, long index,Object value) { try { redisTemplate.opsForList().set(key, index, value); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 移除N个值为value * @param key 键 * @param count 移除多少个 * @param value 值 * @return 移除的个数 */ public long lRemove(String key,long count,Object value) { try { Long remove = redisTemplate.opsForList().remove(key, count, value); return remove; } catch (Exception e) { e.printStackTrace(); return 0; } } //获取所有key public Set<String> getAll_Keys() { Set<String> keys = redisTemplate.keys("*"); return keys; } }
