From 10838a636fbbd4a95ac3652bc7209e98c6a11f6c Mon Sep 17 00:00:00 2001
From: kacperkrzyzak <kacper.krzyzak1@ibm.com>
Date: Tue, 5 Jul 2022 14:55:42 +0200
Subject: [PATCH] Correctly identify MaxUploadSizeExceededException in
 StandardMultipartHttpServletRequest

This commit correctly identifies MaxUploadSizeExceededException in
StandardMultipartHttpServletRequest by converting keywords in the
exception message to lowercase before checking for their presence, for
compatibility with Jetty 9.4.x.

Closes gh-28759
---
 .../support/StandardMultipartHttpServletRequest.java       | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/spring-web/src/main/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequest.java b/spring-web/src/main/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequest.java
index 6970c8e12e..ac367a2a5e 100644
--- a/spring-web/src/main/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequest.java
+++ b/spring-web/src/main/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequest.java
@@ -118,8 +118,11 @@ public class StandardMultipartHttpServletRequest extends AbstractMultipartHttpSe
 
 	protected void handleParseFailure(Throwable ex) {
 		String msg = ex.getMessage();
-		if (msg != null && msg.contains("size") && msg.contains("exceed")) {
-			throw new MaxUploadSizeExceededException(-1, ex);
+		if (msg != null) {
+			msg = msg.toLowerCase();
+			if (msg.contains("size") && msg.contains("exceed")) {
+				throw new MaxUploadSizeExceededException(-1, ex);
+			}
 		}
 		throw new MultipartException("Failed to parse multipart servlet request", ex);
 	}