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This commit is contained in:
Sam Brannen
2023-03-31 13:09:06 +02:00
parent 1efa162cf0
commit 3632bea51e
4 changed files with 45 additions and 75 deletions
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5
spring-core/src/main/java/org/springframework/core/convert/support/CollectionToStringConverter.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2016 the original author or authors.
* Copyright 2002-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -58,10 +58,9 @@ final class CollectionToStringConverter implements ConditionalGenericConverter {
@Override
@Nullable
public Object convert(@Nullable Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
if (source == null) {
if (!(source instanceof Collection<?> sourceCollection)) {
return null;
}
Collection<?> sourceCollection = (Collection<?>) source;
if (sourceCollection.isEmpty()) {
return "";
}