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Merge pull request #2865 from mcp2016/针对coll1为只读集合的补偿

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针对CollUtil.subtract coll1 为只读集合的补偿
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Golden Looly 2023-01-19 11:37:37 +08:00 committed by GitHub
commit 36816bac59
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1 changed files with 10 additions and 3 deletions
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hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
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@ -365,11 +365,18 @@ public class CollUtil {
*/ */
public static <T> Collection<T> subtract(Collection<T> coll1, Collection<T> coll2) { public static <T> Collection<T> subtract(Collection<T> coll1, Collection<T> coll2) {
Collection<T> result = ObjectUtil.clone(coll1); Collection<T> result = ObjectUtil.clone(coll1);
if (null == result) { try {
result = CollUtil.create(coll1.getClass()); if (null == result) {
result = CollUtil.create(coll1.getClass());
result.addAll(coll1);
}
result.removeAll(coll2);
} catch (UnsupportedOperationException e){
// 针对 coll1 为只读集合的补偿
result = CollUtil.create(AbstractCollection.class);
result.addAll(coll1); result.addAll(coll1);
result.removeAll(coll2);
} }
result.removeAll(coll2);
return result; return result;
} }