admin/hutool
1
0
Fork 0
mirror of https://gitee.com/chinabugotech/hutool.git synced 2025-12-06 17:18:54 +08:00
Code Issues Packages Projects Releases Wiki Activity

!1376 feat: 通过全局缓存来优化每次都需要通过反射获取枚举对象 预估时间消耗减少到1/20到1/10 同时使用ConcurrentHashMa…

Browse Source 
Merge pull request !1376 from Rainful/v5-master
This commit is contained in:
Looly 2025-08-25 08:49:17 +00:00 committed by Gitee
commit c00de90179
No known key found for this signature in database
GPG Key ID: 173E9B9CA92EEF8F
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
hutool-core/src/main/java/cn/hutool/core/util/EnumUtil.java
View File

@ -8,6 +8,7 @@ import cn.hutool.core.map.MapUtil;
import java.lang.reflect.Field; import java.lang.reflect.Field;
import java.util.*; import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Function; import java.util.function.Function;
import java.util.function.Predicate; import java.util.function.Predicate;
@ -243,6 +244,7 @@ public class EnumUtil {
/** /**
* 通过 某字段对应值 获取 枚举，获取不到时为 {@code defaultEnum} * 通过 某字段对应值 获取 枚举，获取不到时为 {@code defaultEnum}
* 通过缓存减少反射带来的影响
* *
* @param enumClass 枚举类 * @param enumClass 枚举类
* @param predicate 条件 * @param predicate 条件
@ -254,10 +256,14 @@ public class EnumUtil {
if (null == enumClass || null == predicate) { if (null == enumClass || null == predicate) {
return null; return null;
} }
return Arrays.stream(enumClass.getEnumConstants())
Enum<?>[] constants = CACHE.computeIfAbsent(enumClass, k -> enumClass.getEnumConstants());
return Arrays.stream((E[]) constants)
.filter(predicate).findFirst().orElse(defaultEnum); .filter(predicate).findFirst().orElse(defaultEnum);
} }
private static final Map<Class<?>, Enum<?>[]> CACHE = new ConcurrentHashMap<>();
/** /**
* 通过 某字段对应值 获取 枚举，获取不到时为 {@code null} * 通过 某字段对应值 获取 枚举，获取不到时为 {@code null}
* <p> * <p>