网站图片一般多大,住房和城乡建设部网站,郓城做网站,一建报考专业一、基础使用 概述 在SpringBoot中一般使用RedisTemplate提供的方法来操作Redis。那么使用SpringBoot整合Redis需要 那些步骤呢。 1、 JedisPoolConfig (这个是配置连接池)
2、 RedisConnectionFactory 这个是配置连接信息#xff0c;这里的RedisConnectionFactory是一个接
…一、基础使用 概述 在SpringBoot中一般使用RedisTemplate提供的方法来操作Redis。那么使用SpringBoot整合Redis需要 那些步骤呢。 1、 JedisPoolConfig (这个是配置连接池)
2、 RedisConnectionFactory 这个是配置连接信息这里的RedisConnectionFactory是一个接
口我们需要使用它的实现类。
3、 RedisTemplate 基本操作
二、导入依赖
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId
/dependency三、yaml配置
spring:redis:host: 127.0.0.1port: 6379password: 123456jedis:pool:max-active: 8max-wait: -1msmax-idle: 500min-idle: 0lettuce:shutdown-timeout: 0ms四、配置RedisTemplate /*** description:* author: Leon* date: 2025/1/8 18:28*/
Configuration
public class RedisConfig {BeanSuppressWarnings(all)public RedisTemplateString, Object redisTemplate(RedisConnectionFactory factory) {RedisTemplateString, Object template new RedisTemplateString, Object();template.setConnectionFactory(factory);Jackson2JsonRedisSerializer jackson2JsonRedisSerializer new Jackson2JsonRedisSerializer(Object.class);ObjectMapper om new ObjectMapper();om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);jackson2JsonRedisSerializer.setObjectMapper(om);StringRedisSerializer stringRedisSerializer new StringRedisSerializer();// key采用String的序列化方式template.setKeySerializer(stringRedisSerializer);// hash的key也采用String的序列化方式template.setHashKeySerializer(stringRedisSerializer);// value序列化方式采用jacksontemplate.setValueSerializer(jackson2JsonRedisSerializer);// hash的value序列化方式采用jacksontemplate.setHashValueSerializer(jackson2JsonRedisSerializer);template.afterPropertiesSet();return template;}
}五、封装工具类
package com.jingjie.meta.infra.util;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;/*** description: Redis工具类* author: Leon* date: 2025/1/8 17:37*/
Component
public final class RedisUtils {Autowiredprivate RedisTemplateString, Object redisTemplate;
// common/*** 指定缓存失效时间** param key 键* param time 时间(秒)*/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((CollectionString) 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 delta 要增加几(大于0)*/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 delta 要减少几(小于0)*/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*/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 MapObject, Object hmget(String key) {return redisTemplate.opsForHash().entries(key);}/*** HashSet** param key 键* param map 对应多个键值*/public boolean hmset(String key, MapString, 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, MapString, 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nul* l* 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)*/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)*/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*/public SetObject 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*/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*/public ListObject 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*/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 index0时 0 表头1 第二个元素依次类推index0* 时-1表尾-2倒数第二个元素依次类推*/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*/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)*/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* return*/public boolean lSet(String key, ListObject 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, ListObject 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;}}
}
