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package com.hx.redis; |
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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.concurrent.TimeUnit; |
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/** 文件处理工具 |
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* @author wangrenhuang |
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* @Date 2021-10-19 |
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*/ |
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@Component |
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public class RedisUtil { |
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/** |
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* [redis] |
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*/ |
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@Resource |
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private RedisTemplate<String, Object> redisTemplate; |
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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 hasKey(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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return false; |
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} |
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} |
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/** |
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* [普通缓存获取] |
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* @param key 键 |
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* @return 值 |
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*/ |
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public Object get(String key) { |
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return key == null ? null : redisTemplate.opsForValue().get(key); |
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} |
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/** |
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* [普通缓存删除] |
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* @param key 键 |
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* @return 值 |
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*/ |
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public boolean delete(String key) { |
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try { |
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Boolean aBoolean = redisTemplate.hasKey(key); |
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return aBoolean == false ? true : redisTemplate.delete(key); |
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}catch (Exception e){ |
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return false; |
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} |
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} |
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/** |
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* [普通缓存放入] |
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* @param key 键 |
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* @param value 值 |
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* @return true成功 false失败 |
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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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return false; |
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} |
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} |
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/** |
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* 普通缓存放入并设置时间 |
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* @param key 键 |
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* @param value 值 |
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* @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期 |
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* @return true成功 false 失败 |
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*/ |
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public boolean set(String key, Object value, long time) { |
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try { |
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if (time > 0) { |
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redisTemplate.opsForValue().set(key, value, time, 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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