From d5874ab99ef62b3da8a9269aa526b43328e968a9 Mon Sep 17 00:00:00 2001
From: Jason <44935830+huyachigege@users.noreply.github.com>
Date: Mon, 13 Nov 2023 20:17:37 +0800
Subject: [PATCH] Avoid duplicate resources in
 PathMatchingResourcePatternResolver on Windows

This commit updates PathMatchingResourcePatternResolver to avoid
returning duplicate resources on MS Windows when searching using the
`classpath*:` prefix and a wildcard pattern that matches resources
which are directly present in a JAR as well as present via classpath
manifest entries.

Closes gh-31598
---
 .../core/io/support/PathMatchingResourcePatternResolver.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java b/spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java
index 5666fdbd1d..b1ef54db9a 100644
--- a/spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java
+++ b/spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java
@@ -491,7 +491,8 @@ public class PathMatchingResourcePatternResolver implements ResourcePatternResol
 					int prefixIndex = filePath.indexOf(':');
 					if (prefixIndex == 1) {
 						// Possibly "c:" drive prefix on Windows, to be upper-cased for proper duplicate detection
-						filePath = StringUtils.capitalize(filePath);
+						// to resolve find duplicate jar resource on windows
+						filePath = "/" + StringUtils.capitalize(filePath);
 					}
 					// Since '#' can appear in directories/filenames, java.net.URL should not treat it as a fragment
 					filePath = StringUtils.replace(filePath, "#", "%23");