From 7b487d4c819bc67021cf224c5042066bf73df1e3 Mon Sep 17 00:00:00 2001
From: nickchange <126672920+nickchange@users.noreply.github.com>
Date: 星期六, 28 十月 2023 17:01:00 +0800
Subject: [PATCH] 10.28。2
---
cloud-server-other/src/main/java/com/dsh/other/util/RedisUtil.java | 179 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 179 insertions(+), 0 deletions(-)
diff --git a/cloud-server-other/src/main/java/com/dsh/other/util/RedisUtil.java b/cloud-server-other/src/main/java/com/dsh/other/util/RedisUtil.java
new file mode 100644
index 0000000..88be661
--- /dev/null
+++ b/cloud-server-other/src/main/java/com/dsh/other/util/RedisUtil.java
@@ -0,0 +1,179 @@
+package com.dsh.other.util;
+
+import com.alibaba.csp.sentinel.util.StringUtil;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.JedisPool;
+import redis.clients.jedis.Pipeline;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+
+/**
+ * Redis工具类
+ */
+@Component
+public class RedisUtil {
+
+ @Autowired
+ private JedisPool jedisPool;
+
+ private static final int TIMEOUT = 10 * 1000; // 10秒超时时间
+ private static final int SLEEP_TIME = 1000; // 1秒休眠时间
+
+ /**
+ * 向redis中存储字符串没有过期时间
+ * Storing strings in Redis without an expiration time.
+ * @param key
+ * @param value
+ */
+ public void setStrValue(String key, String value){
+ if(StringUtil.isNotEmpty(key)){
+ Jedis resource = jedisPool.getResource();
+ String set = resource.set(key, value);
+ closeJedis(resource);
+ }
+ }
+
+
+ /**
+ * 以分钟为单位设置存储值（设置过期时间）
+ * Set storage value in minutes (set expiration time) as units.
+ * @param key
+ * @param value
+ * @param time 秒
+ */
+ public void setStrValue(String key, String value, int time){
+ if(StringUtil.isNotEmpty(key)){
+ Jedis resource = jedisPool.getResource();
+ String setex = resource.setex(key, time, value);
+ closeJedis(resource);
+ }
+ }
+
+
+ /**
+ * 从redis中获取值
+ * @param key
+ * @return
+ */
+ public String getValue(String key){
+ if(StringUtil.isNotEmpty(key)){
+ Jedis resource = jedisPool.getResource();
+ String data = resource.get(key);
+ closeJedis(resource);
+ return data;
+ }
+ return null;
+ }
+
+
+ /**
+ * 批量获取
+ * @param kes
+ * @return
+ */
+ public List<Object> getValues(List<String> kes){
+ if(null != kes){
+ Jedis resource = jedisPool.getResource();
+ Pipeline pipelined = resource.pipelined();
+ for(String key : kes){
+ pipelined.get(key);
+ }
+ List<Object> list = pipelined.syncAndReturnAll();
+
+ closeJedis(resource);
+ pipelined.clear();
+ try {
+ pipelined.close();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ List<Object> data = new ArrayList<>();
+ for(Object o : list){
+ if(null != o){
+ data.add(o);
+ }
+ }
+ return data;
+ }
+ return null;
+ }
+
+
+ /**
+ * 删除key
+ * @param key
+ */
+ public void remove(String key){
+ if(StringUtil.isNotEmpty(key)){
+ Jedis resource = jedisPool.getResource();
+ Long del = resource.del(key);
+ closeJedis(resource);
+ }
+ }
+
+
+ /**
+ * 删除资源
+ * @param jedis
+ */
+ public void closeJedis(Jedis jedis){
+ if(null != jedis){
+ jedis.close();
+ }
+ }
+
+
+ public boolean acquireLock(String key,String value) {
+ Jedis jedis = null;
+ try {
+ jedis = jedisPool.getResource();
+ long start = System.currentTimeMillis();
+ String[] split = key.split(";");
+ for (String s : split) {
+
+ while (true) {
+ // 尝试获取锁
+ String result = jedis.set(s, value, "NX", "PX", TIMEOUT);
+ if ("OK".equals(result)) {
+ return true;
+ }
+ // 超时则返回失败
+ if (System.currentTimeMillis() - start > TIMEOUT) {
+ return false;
+ }
+ // 休眠一段时间后重试
+ Thread.sleep(SLEEP_TIME);
+ }
+ }
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ } finally {
+ if (jedis != null) {
+ jedis.close();
+ }
+ }
+ return false;
+ }
+
+ public void releaseLock(String key) {
+ Jedis jedis = null;
+ try {
+ jedis = jedisPool.getResource();
+ jedis.del(key);
+ } catch (Exception e) {
+ e.printStackTrace();
+ } finally {
+ if (jedis != null) {
+ jedis.close();
+ }
+ }
+ }
+
+
+}
--
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