From 2f55cebbad3dea187a5f91d16ec80a9677dab699 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期三, 13 十一月 2024 11:16:53 +0800
Subject: [PATCH] 1
---
src/main/java/com/yssh/utils/CacheUtils.java | 77 ++++++++++++++++++++++++++++++++++++++
1 files changed, 77 insertions(+), 0 deletions(-)
diff --git a/src/main/java/com/yssh/utils/CacheUtils.java b/src/main/java/com/yssh/utils/CacheUtils.java
new file mode 100644
index 0000000..8404a46
--- /dev/null
+++ b/src/main/java/com/yssh/utils/CacheUtils.java
@@ -0,0 +1,77 @@
+package com.yssh.utils;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+public class CacheUtils {
+ private static @NonNull Cache<String, Object> cache;
+
+ public static void init() {
+ cache = Caffeine.newBuilder()
+ .initialCapacity(2)
+ .maximumSize(4096)
+ .expireAfterWrite(24 * 7, TimeUnit.HOURS)
+ .build();
+ }
+
+ public static Object get(String key) {
+ return cache.getIfPresent(key);
+ }
+
+ public static void put(String key, Object obj) {
+ cache.put(key, obj);
+ }
+
+ public static void remove(String key) {
+ cache.invalidate(key);
+ }
+
+ public static void clear() {
+ cache.invalidateAll();
+ }
+
+ public static <T> List<T> getListByKey(String key) {
+ Object obj = get(key);
+ if (obj instanceof List<?>) {
+ return (List<T>) obj;
+ }
+
+ return null;
+ }
+
+ public static <T> void putListByKey(String key, List<T> list) {
+ if (null != list && list.size() > 0) {
+ put(key, list);
+ }
+ }
+
+ public static String getMd5(String str) {
+ if (StringUtils.isEmpty(str)) {
+ return null;
+ }
+
+ try {
+ MessageDigest md5 = MessageDigest.getInstance("MD5");
+ md5.update(str.getBytes());
+ byte[] byteArray = md5.digest();
+
+ BigInteger bigInt = new BigInteger(1, byteArray);
+
+ String result = bigInt.toString(16);
+
+ while (result.length() < 32) {
+ result = "0" + result;
+ }
+
+ return result;
+ } catch (Exception e) {
+ return null;
+ }
+ }
+}
--
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