package com.zbkj.common.utils;
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import org.springframework.data.redis.core.ListOperations;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.data.redis.core.SetOperations;
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import org.springframework.data.redis.core.ZSetOperations;
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import org.springframework.stereotype.Component;
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import javax.annotation.Resource;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.TimeUnit;
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/**
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* redis工具类
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*/
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@Component
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public class RedisUtil {
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@Resource
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private RedisTemplate<String, Object> redisTemplate;
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// private static RedisTemplate<String, Object> redisTemplate = SpringUtil.getBean("redisTemplate", RedisTemplate.class);
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// =============== common ==========================
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/**
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* 指定缓存失效时间
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* @param key 键
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* @param time 时间(秒)
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* @return boolean
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*/
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public boolean expire(String key, long time) {
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try {
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if (time > 0) {
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redisTemplate.expire(key, time, TimeUnit.SECONDS);
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}
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return true;
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 根据key 获取过期时间
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* @param key 键 不能为null
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* @return 时间(秒) 返回0代表为永久有效 失效时间为负数，说明该主键未设置失效时间（失效时间默认为-1）
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*/
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public long getExpire(String key) {
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return redisTemplate.getExpire(key, TimeUnit.SECONDS);
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}
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/**
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* 判断key是否存在
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* @param key 键
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* @return true 存在 false 不存在
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*/
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public boolean exists(String key){
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try {
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return redisTemplate.hasKey(key);
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 删除对应的value
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* @param key string key
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*/
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public void delete(String key) {
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if (exists(key)) {
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redisTemplate.delete(key);
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}
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}
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// =============== string ==========================
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/**
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* 写入缓存
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* @param key string key
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* @param value string value
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*/
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public boolean set(String key, Object value) {
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try {
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redisTemplate.opsForValue().set(key, value);
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return true;
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 写入缓存带有效期(默认时间单位:秒)
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* @param key string key
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* @param value string value
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* @param expireTime Long 过期时间
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* @return boolean
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*/
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public boolean set(String key, Object value, Long expireTime) {
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try {
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if (expireTime > 0) {
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redisTemplate.opsForValue().set(key, value, expireTime, TimeUnit.SECONDS);
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} else {
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set(key, value);
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}
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return true;
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 写入缓存带有效期
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* @param key string key
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* @param value string value
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* @param expireTime Long 过期时间
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* @param timeUnit TimeUnit 时间格式
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* @return boolean
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*/
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public boolean set(String key, Object value, Long expireTime, TimeUnit timeUnit) {
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try {
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redisTemplate.opsForValue().set(key, value, expireTime, timeUnit);
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return true;
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 读取缓存
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* @param key string key
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* @return T
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*/
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@SuppressWarnings("unchecked")
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public <T> T get(String key) {
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return (T) redisTemplate.opsForValue().get(key);
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}
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/**
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* 哈希添加
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* @param key string key
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* @param hashKey Object hashKey
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* @param value Object value
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*/
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public void hmSet(String key, Object hashKey, Object value) {
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redisTemplate.opsForHash().put(key, hashKey, value);
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}
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/**
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* 哈希删除
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* @param key string key
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* @param hashKey Object hashKey
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*/
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public void hmDelete(String key, Object hashKey) {
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redisTemplate.opsForHash().delete(key, hashKey);
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}
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/**
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* 哈希获取数据
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* @param key string key
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* @param hashKey Object hashKey
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*/
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public Object hmGet(String key, Object hashKey) {
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return redisTemplate.opsForHash().get(key, hashKey);
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}
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/**
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* 哈希数量
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* @param key string key
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*/
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public Long getHashSize(String key) {
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return redisTemplate.opsForHash().size(key);
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}
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/**
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* 列表添加左边添加
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* @param k string key
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* @param v Object v
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* @author Mr.Zhang
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* @since 2020-04-13
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*/
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public void lPush(String k, Object v) {
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ListOperations<String, Object> list = redisTemplate.opsForList();
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list.leftPush(k, v);
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}
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/**
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* 从右边拿出来一个
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* @param k string key
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* @param t Long 超时秒数
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*/
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public Object getRightPop(String k, Long t){
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return redisTemplate.opsForList().rightPop(k, t, TimeUnit.SECONDS);
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}
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/**
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* 列表获取数量
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* @param k string key
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* @return Long
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*/
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public Long getListSize(String k) {
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return redisTemplate.opsForList().size(k);
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}
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/**
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* 列表获取
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* @param k string key
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* @param l long l
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* @param l1 long l1
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* @return List<Object>
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*/
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public List<Object> lRange(String k, long l, long l1) {
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ListOperations<String, Object> list = redisTemplate.opsForList();
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return list.range(k, l, l1);
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}
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/**
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* 集合添加
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* @param key string key
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* @param value Object value
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*/
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public void add(String key, Object value) {
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SetOperations<String, Object> set = redisTemplate.opsForSet();
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set.add(key, value);
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}
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/**
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* 集合获取
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* @param key string key
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* @return Set<Object>
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*/
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public Set<Object> setMembers(String key) {
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SetOperations<String, Object> set = redisTemplate.opsForSet();
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return set.members(key);
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}
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/**
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* 有序集合添加 排行榜使用
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* @param key string key
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* @param value Object value
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* @param score double scoure
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*/
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public void zAdd(String key, Object value, double score) {
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ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
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zset.add(key, value, score);
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}
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/**
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* 有序集合获取 排行榜使用
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* @param key string key
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* @param score double scoure
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* @return Set<Object>
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*/
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public Set<Object> rangeByScore(String key, double score, double score1) {
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ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
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return zset.rangeByScore(key, score, score1);
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}
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/**
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* 递增
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* @param key 键
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* @return long
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*/
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public long incrAndCreate(String key){
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if (!exists(key)) {
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set(key, 1);
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return 1;
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}
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return incr(key, 1L);
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}
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/**
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* 递增
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* @param key 键
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* @param delta 要增加几(大于0)
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* @return long
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*/
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public long incr(String key, long delta){
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if (delta < 0) {
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throw new RuntimeException("递增因子必须大于0");
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}
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return redisTemplate.opsForValue().increment(key, delta);
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}
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}
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