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Return null in case of no matching part even for array/collection parameter

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Closes gh-25819
This commit is contained in:
Juergen Hoeller
2020-10-12 17:59:48 +02:00
parent 50b9542402
commit 83bfee9201
2 changed files with 89 additions and 25 deletions
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64
spring-web/src/main/java/org/springframework/web/multipart/support/MultipartResolutionDelegate.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2019 the original author or authors.
* Copyright 2002-2020 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.
@@ -99,37 +99,53 @@ public final class MultipartResolutionDelegate {
boolean isMultipart = (multipartRequest != null || isMultipartContent(request));
if (MultipartFile.class == parameter.getNestedParameterType()) {
if (multipartRequest == null && isMultipart) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
return (multipartRequest != null ? multipartRequest.getFile(name) : null);
}
else if (isMultipartFileCollection(parameter)) {
if (multipartRequest == null && isMultipart) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
return (multipartRequest != null ? multipartRequest.getFiles(name) : null);
}
else if (isMultipartFileArray(parameter)) {
if (multipartRequest == null && isMultipart) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
if (multipartRequest != null) {
List<MultipartFile> multipartFiles = multipartRequest.getFiles(name);
return multipartFiles.toArray(new MultipartFile[0]);
}
else {
if (!isMultipart) {
return null;
}
if (multipartRequest == null) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
return multipartRequest.getFile(name);
}
else if (isMultipartFileCollection(parameter)) {
if (!isMultipart) {
return null;
}
if (multipartRequest == null) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
List<MultipartFile> files = multipartRequest.getFiles(name);
return (!files.isEmpty() ? files : null);
}
else if (isMultipartFileArray(parameter)) {
if (!isMultipart) {
return null;
}
if (multipartRequest == null) {
multipartRequest = new StandardMultipartHttpServletRequest(request);
}
List<MultipartFile> files = multipartRequest.getFiles(name);
return (!files.isEmpty() ? files.toArray(new MultipartFile[0]) : null);
}
else if (Part.class == parameter.getNestedParameterType()) {
return (isMultipart ? request.getPart(name): null);
if (!isMultipart) {
return null;
}
return request.getPart(name);
}
else if (isPartCollection(parameter)) {
return (isMultipart ? resolvePartList(request, name) : null);
if (!isMultipart) {
return null;
}
List<Part> parts = resolvePartList(request, name);
return (!parts.isEmpty() ? parts : null);
}
else if (isPartArray(parameter)) {
return (isMultipart ? resolvePartList(request, name).toArray(new Part[0]) : null);
if (!isMultipart) {
return null;
}
List<Part> parts = resolvePartList(request, name);
return (!parts.isEmpty() ? parts.toArray(new Part[0]) : null);
}
else {
return UNRESOLVABLE;