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Return consistent collection type for matrix variables

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See gh-31483
This commit is contained in:
Bernie Schelberg
2023-10-24 17:08:13 +10:00
committed by Stéphane Nicoll
parent 6bdf7ad36a
commit ea30c8fb5b
2 changed files with 13 additions and 1 deletions
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spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/MatrixVariableMapMethodArgumentResolver.java
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@@ -69,7 +69,7 @@ public class MatrixVariableMapMethodArgumentResolver implements HandlerMethodArg
HandlerMapping.MATRIX_VARIABLES_ATTRIBUTE, RequestAttributes.SCOPE_REQUEST);
if (CollectionUtils.isEmpty(matrixVariables)) {
return Collections.emptyMap();
return (isSingleValueMap(parameter) ? Collections.emptyMap() : new LinkedMultiValueMap<>(0));
}
MultiValueMap<String, String> map = new LinkedMultiValueMap<>();