package com.supersavedriving.user.modular.system.util;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.stereotype.Component;
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import javax.annotation.Resource;
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import java.util.UUID;
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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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/**
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* 向redis中存储字符串没有过期时间
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* @param key
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* @param value
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*/
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public void setStrValue(String key, String value){
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redisTemplate.opsForValue().set(key, value);
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}
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/**
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* 以分钟为单位设置存储值（设置过期时间）
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* @param key
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* @param value
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* @param time 秒
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*/
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public void setStrValue(String key, String value, int time){
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redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
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}
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/**
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* 从redis中获取值
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* @param key
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* @return
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*/
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public String getValue(String key){
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return (String) redisTemplate.opsForValue().get(key);
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}
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/**
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* 删除key
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* @param key
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*/
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public void remove(String key){
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redisTemplate.delete(key);
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}
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/**
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* 删除Set集合中的值
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* @param key
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* @param members
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*/
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public void delSetValue(String key, String...members){
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redisTemplate.opsForSet().remove(key, members);
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}
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/**
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* redis加锁
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* @param key
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* @param value
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* @param time
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* @return
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*/
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public boolean lock(String key, String value, int time){
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key += "_lock";
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return redisTemplate.opsForValue().setIfAbsent(key, value);
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}
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/**
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* 获取redis锁
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* @return
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*/
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public boolean lock(){
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try {
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boolean b = lock(5);
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if(!b){
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int num1 = 1;
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while (num1 <= 10){
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try {
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Thread.sleep(1000);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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b = lock(5);
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if(b){
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return true;
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}else{
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num1++;
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}
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}
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return false;
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}
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return b;
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}catch (Exception e){
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e.printStackTrace();
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}finally {
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unlock();
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}
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return false;
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}
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public boolean lock(String key){
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try {
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boolean b = lock(key,5);
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if(!b){
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int num1 = 1;
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while (num1 <= 10){
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try {
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Thread.sleep(1000);//等待1秒
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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b = lock(5);
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if(b){
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return true;
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}else{
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num1++;
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}
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}
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return false;
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}
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return b;
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}catch (Exception e){
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e.printStackTrace();
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unlock();
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}
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return false;
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}
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/**
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* 获取redis锁
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* @param time
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* @return
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*/
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public boolean lock(String key, int time){
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String uuid = UUID.randomUUID().toString();
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return lock(key, uuid, time);
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}
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/**
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* 获取redis锁
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* @param time
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* @return
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*/
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public boolean lock(int time){
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String uuid = UUID.randomUUID().toString();
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return lock("redis", uuid, time);
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}
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/**
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* redis释放锁
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* @param key
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* @return
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*/
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public boolean unlock(String key){
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return redisTemplate.delete(key);
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}
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/**
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* 删除锁
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* @return
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*/
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public boolean unlock(){
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return unlock("redis");
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}
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}
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