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Support empty target request path in FlashMap

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Prior to this commit, if the user configured an empty path for the
targetRequestPath property of a FlashMap, the FlashMapManager threw a
StringIndexOutOfBoundsException when saving the output FlashMap for the
next request.

This commit fixes this by skipping the decoding and normalization of an
empty target request path.

Fixes gh-23240
This commit is contained in:
Sam Brannen
2019-07-07 18:26:59 +02:00
parent efab6eb55d
commit db8be50161
2 changed files with 28 additions and 36 deletions
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5
spring-webmvc/src/main/java/org/springframework/web/servlet/support/AbstractFlashMapManager.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2018 the original author or authors.
* Copyright 2002-2019 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.
@@ -40,6 +40,7 @@ import org.springframework.web.util.UrlPathHelper;
*
* @author Rossen Stoyanchev
* @author Juergen Hoeller
* @author Sam Brannen
* @since 3.1.1
*/
public abstract class AbstractFlashMapManager implements FlashMapManager {
@@ -218,7 +219,7 @@ public abstract class AbstractFlashMapManager implements FlashMapManager {
@Nullable
private String decodeAndNormalizePath(@Nullable String path, HttpServletRequest request) {
if (path != null) {
if (path != null && !path.isEmpty()) {
path = getUrlPathHelper().decodeRequestString(request, path);
if (path.charAt(0) != '/') {
String requestUri = getUrlPathHelper().getRequestUri(request);