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Polish MappingMediaTypeFileExtensionResolver.addFileExtension() 

Closes gh-23145
This commit is contained in:
Johnny Lim 2019-06-18 16:10:30 +09:00 committed by Sam Brannen
parent f6a4595cef
commit 7f67cecd10
1 changed files with 2 additions and 3 deletions
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5
spring-web/src/main/java/org/springframework/web/accept/MappingMediaTypeFileExtensionResolver.java
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@ -85,9 +85,8 @@ public class MappingMediaTypeFileExtensionResolver implements MediaTypeFileExten
}
private void addFileExtension(MediaType mediaType, String extension) {
List<String> newList = new CopyOnWriteArrayList<>();
List<String> oldList = this.fileExtensions.putIfAbsent(mediaType, newList);
(oldList != null ? oldList : newList).add(extension);
List<String> list = this.fileExtensions.computeIfAbsent(mediaType, key -> new CopyOnWriteArrayList<>());
list.add(extension);
}