Sringboot 集成redis(基于lettuce)
引入依赖
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!-- fastjson--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.70</version></dependency>
application.yml文件配置:
spring:redis:# redis配置host: 192.168.26.128port:6379#password: nulldatabase:0lettuce:pool:# 连接池最大连接数 默认8 ,负数表示没有限制max-active:8# 连接池最大阻塞等待时间(使用负值表示没有限制) 默认-1max-wait:-1# 连接池中的最大空闲连接 默认8max-idle:8# 连接池中的最小空闲连接 默认0min-idle:0
配置lettuce
import com.fasterxml.jackson.annotation.JsonAutoDetect;import com.fasterxml.jackson.annotation.PropertyAccessor;import com.fasterxml.jackson.databind.ObjectMapper;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.data.redis.connection.RedisConnectionFactory;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;import org.springframework.data.redis.serializer.StringRedisSerializer;@ConfigurationpublicclassLettuceConfig{@Beanpublic RedisTemplate<String,Object>redisTemplate(RedisConnectionFactory factory){
RedisTemplate<String, Object> template=newRedisTemplate<>();
template.setConnectionFactory(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer=newJackson2JsonRedisSerializer(Object.class);
ObjectMapper objMapper=newObjectMapper();
objMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(objMapper);
StringRedisSerializer stringRedisSerializer=newStringRedisSerializer();
template.setKeySerializer(stringRedisSerializer);
template.setHashKeySerializer(stringRedisSerializer);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();return template;}}
自定义Redis工具类
package com.xxx.xlt.utils.redis;import java.util.List;import java.util.Map;import java.util.Set;import java.util.concurrent.TimeUnit;import com.xxx.xlt.utils.common.AppContextUtil;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.stereotype.Component;import org.springframework.util.CollectionUtils;import javax.annotation.PostConstruct;@ComponentpublicclassRedisUtil{privatestatic RedisTemplate<String, Object> redisTemplate;@PostConstructpublicvoidsetStaticParam(){
RedisUtil.redisTemplate=(RedisTemplate<String, Object>)AppContextUtil.getBean("redisTemplate");}/**
* 指定缓存失效时间
*
* @param key 键
* @param time 时间(秒)
* @return
*/publicstaticbooleanexpire(String key,long time){try{if(time>0){
redisTemplate.expire(key, time, TimeUnit.SECONDS);}returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticlonggetExpire(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
*/publicstaticbooleanhasKey(String key){try{return redisTemplate.hasKey(key);}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 删除缓存
*
* @param key 可以传一个值 或多个
*/@SuppressWarnings("unchecked")publicstaticvoiddel(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
*/publicstatic Objectget(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
*/publicstaticbooleanset(String key, Object value){try{
redisTemplate.opsForValue().set(key, value);returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticbooleanset(String key, Object value,long time){try{if(time>0){
redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);}else{set(key, value);}returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 递增
*
* @param key 键
* @param delta 要增加几(大于0)
* @return
*/publicstaticlongincr(String key,long delta){if(delta<0){thrownewRuntimeException("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)
* @return
*/publicstaticlongdecr(String key,long delta){if(delta<0){thrownewRuntimeException("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
*/publicstatic Objecthget(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
*/publicstatic 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
*/publicstaticbooleanhmset(String key, Map<String, Object> map){try{
redisTemplate.opsForHash().putAll(key, map);returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticbooleanhmset(String key, Map<String, Object> map,long time){try{
redisTemplate.opsForHash().putAll(key, map);if(time>0){expire(key, time);}returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticbooleanhset(String key, String item, Object value){try{
redisTemplate.opsForHash().put(key, item, value);returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticbooleanhset(String key, String item, Object value,long time){try{
redisTemplate.opsForHash().put(key, item, value);if(time>0){expire(key, time);}returntrue;}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 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
*/publicstaticvoidhdel(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
*/publicstaticbooleanhHasKey(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
*/publicstaticdoublehincr(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
*/publicstaticdoublehdecr(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
*/publicstatic 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
*/publicstaticbooleansHasKey(String key, Object value){try{return redisTemplate.opsForSet().isMember(key, value);}catch(Exception e){
e.printStackTrace();returnfalse;}}/**
* 将数据放入set缓存
*
* @param key 键
* @param values 值 可以是多个
* @return 成功个数
*/publicstaticlongsSet(String key, Object... values){try{return redisTemplate.opsForSet().add(key, values);}catch(Exception e){
e.printStackTrace();return0;}}/**
* 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
*/publicstaticlongsSetAndTime(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();return0;}}/**
* 获取set缓存的长度
*
* @param key 键
* @return
*/publicstaticlongsGetSetSize(String key){try{return redisTemplate.opsForSet().size(key);}catch(Exception e){
e.printStackTrace();return0;}}/**
* 移除值为value的
*
* @param key 键
* @param values 值 可以是多个
* @return 移除的个数
*/publicstaticlongsetRemove(String key, Object... values){try{
Long count= redisTemplate.opsForSet().remove(key, values);return count;}catch(Exception e){
e.printStackTrace();return0;}}// ===============================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
*/publicstatic 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
*/publicstaticlonglGetListSize(String key){try{return redisTemplate.opsForList().size(key);}catch(Exception e){
e.printStackTrace();return0;<