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MapUtil增加flatten方法（pr#1368@Gitee）

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Looly
2025-07-30 19:14:23 +08:00
parent 4dcbc74cd1
commit 59f33fd12d
1 changed files with 7 additions and 4 deletions
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7
hutool-core/src/main/java/cn/hutool/core/map/MapUtil.java
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@@ -1549,9 +1549,10 @@ public class MapUtil {
* 将多层级Map处理为一个层级Map类型
*
* @param map 入参Map
* @return 单层级Map返回值
* @param <K> 键类型
* @param <V> 值类型
* @return 单层级Map返回值
* @since 5.8.40
*/
public static <K, V> Map<K, V> flatten(final Map<K, V> map) {
return flatten(map, new HashMap<>());
@@ -1565,6 +1566,7 @@ public class MapUtil {
* @param <K> 键类型
* @param <V> 值类型
* @return 单层级Map返回值
* @since 5.8.40
*/
@SuppressWarnings("unchecked")
public static <K, V> Map<K, V> flatten(final Map<K, V> map, Map<K, V> flatMap) {
@@ -1575,7 +1577,8 @@ public class MapUtil {
Map<K, V> finalFlatMap = flatMap;
map.forEach((k, v) -> {
if (v instanceof Map) {
// 避免嵌套循环
if (v instanceof Map && v != map) {
flatten((Map<K, V>) v, finalFlatMap);
} else {
finalFlatMap.put(k, v);