RedisUtils.java
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package com.huaheng.common.redis;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import org.springframework.data.redis.core.*;
import java.io.Serializable;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* @ClassName RedisUtils
* @Description redis操作的工具类
* @CreateDate 2022/12/22 15:01
* @Version 1.0
**/
public class RedisUtils {
/**
* @Description 写入缓存
* @Param [redisTemplate, key, value]
* @Return void
**/
public static void set(RedisTemplate redisTemplate,final String key, Object value) throws Exception {
ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
operations.set(key, value);
}
/**
* @Description 写入缓存设置时效时间
* @Param [redisTemplate, key, value, expireTime]
* @Return void
**/
public static void set(RedisTemplate redisTemplate,final String key, Object value, Long expireTime) throws Exception{
ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
operations.set(key, value);
redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
}
/**
* @Description 批量删除key
* @Param [redisTemplate, pattern]
* @Return void
**/
public static void removePattern(RedisTemplate redisTemplate,final String pattern) throws Exception {
Set<Serializable> keys = redisTemplate.keys(pattern);
if (keys.size() > 0){
redisTemplate.delete(keys);
}
}
/**
* @Description 删除对应的value
* @Param [redisTemplate, key]
* @Return void
**/
public static void remove(RedisTemplate redisTemplate,final String key) throws Exception{
if (exists(redisTemplate,key)) {
redisTemplate.delete(key);
}
}
/**
* @Description 判断缓存中是否有对应的value
* @Param [redisTemplate, key]
* @Return boolean
**/
public static boolean exists(RedisTemplate redisTemplate,final String key) throws Exception{
return redisTemplate.hasKey(key);
}
/**
* @Description 读取缓存
* @Param [redisTemplate, key]
* @Return java.lang.Object
**/
public static Object get(RedisTemplate redisTemplate,final String key) throws Exception{
Object result = null;
ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
result = operations.get(key);
return result;
}
/**
* @Description 哈希 添加
* @Param [redisTemplate, key, hashKey, value]
* @Return void
**/
public static void hmSet(RedisTemplate redisTemplate,String key, Object hashKey, Object value) throws Exception{
HashOperations<String, Object, Object> hash = redisTemplate.opsForHash();
hash.put(key,hashKey,value);
}
/**
* @Description 删除哈希
* @Param [redisTemplate, key, value]
* @Return void
**/
public static void hmDel(RedisTemplate redisTemplate,String key, Object... value) throws Exception{
HashOperations<String, Object, Object> hash = redisTemplate.opsForHash();
hash.delete(key,value);
}
/**
* @Description 哈希获取数据
* @Param [redisTemplate, key, hashKey]
* @Return java.lang.Object
**/
public static Object hmGet(RedisTemplate redisTemplate,String key, Object hashKey) throws Exception{
HashOperations<String, Object, Object> hash = redisTemplate.opsForHash();
return hash.get(key,hashKey);
}
/**
* @Description 列表添加
* @Param [redisTemplate, k, v]
* @Return void
**/
public static void lPush(RedisTemplate redisTemplate,String k,Object v) throws Exception{
ListOperations<String, Object> list = redisTemplate.opsForList();
list.rightPush(k,v);
}
/**
* @Description 列表获取
* @Param [redisTemplate, k, l, l1]
* @Return java.util.List<java.lang.Object>
**/
public static List<Object> lRange(RedisTemplate redisTemplate,String k, long l, long l1) throws Exception{
ListOperations<String, Object> list = redisTemplate.opsForList();
return list.range(k,l,l1);
}
/**
* @Description 集合添加
* @Param [redisTemplate, key, value]
* @Return void
**/
public static void add(RedisTemplate redisTemplate,String key,Object value )throws Exception{
SetOperations<String, Object> set = redisTemplate.opsForSet();
set.add(key,value);
}
/**
* @Description 集合获取
* @Param [redisTemplate, key]
* @Return java.util.Set<java.lang.Object>
**/
public static Set<Object> setMembers(RedisTemplate redisTemplate,String key) throws Exception{
SetOperations<String, Object> set = redisTemplate.opsForSet();
return set.members(key);
}
/**
* @Description 有序集合添加
* @Param [redisTemplate, key, value, scoure]
* @Return void
**/
public static void zAdd(RedisTemplate redisTemplate,String key,Object value,double scoure) throws Exception{
ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
zset.add(key,value,scoure);
}
/**
* @Description 有序集合获取
* @Param [redisTemplate, key, scoure, scoure1]
* @Return java.util.Set<java.lang.Object>
**/
public static Set<Object> rangeByScore(RedisTemplate redisTemplate,String key,double scoure,double scoure1)throws Exception{
ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
return zset.rangeByScore(key, scoure, scoure1);
}
/**
* @Description 分布式上锁
* @Param redisTemplate key value exprieTime 过期时间，单位分钟
* @Return java.lang.Boolean
**/
public static Boolean tryLock(RedisTemplate redisTemplate,String key, long value,long exprieTime) {
if (redisTemplate.opsForValue().setIfAbsent(key, value, exprieTime ,TimeUnit.SECONDS)) {
return true;
}
Object currentValue = redisTemplate.opsForValue().get(key);
if (ObjectUtils.isNotEmpty(currentValue) && Long.valueOf(currentValue.toString()) < System.currentTimeMillis()) {
//获取上一个锁的时间 如果高并发的情况可能会出现已经被修改的问题 所以多一次判断保证线程的安全
Object oldValue = redisTemplate.opsForValue().getAndSet(key, value);
if (ObjectUtils.isNotEmpty(oldValue) && oldValue.equals(currentValue)) {
return true;
}
}
return false;
}
/**
* @Description 释放分布式锁
* @Param redisTemplate key value
* @Return void
**/
public static void unlock(RedisTemplate redisTemplate,String key, long value) {
Object currentValue = redisTemplate.opsForValue().get(key);
try {
if (ObjectUtils.isNotEmpty(currentValue) && currentValue.equals(value)) {
redisTemplate.opsForValue().getOperations().delete(key);
}
} catch (Exception e) {
}
}
}