Make removal of jsessionid case insensitive

Issue: SPR-10398

Author: rstoyanchev

spring-web/src/main/java/org/springframework/web/util/UrlPathHelper.java

@@ -457,7 +457,7 @@ private String removeSemicolonContentInternal(String requestUri) {
 	}
 
 	private String removeJsessionid(String requestUri) {
-		int startIndex = requestUri.indexOf(";jsessionid=");
+		int startIndex = requestUri.toLowerCase().indexOf(";jsessionid=");
 		if (startIndex != -1) {
 			int endIndex = requestUri.indexOf(';', startIndex + 12);
 			String start = requestUri.substring(0, startIndex);

spring-web/src/test/java/org/springframework/web/util/UrlPathHelperTests.java

@@ -16,16 +16,15 @@
 
 package org.springframework.web.util;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-
 import java.io.UnsupportedEncodingException;
 
 import org.junit.Before;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.springframework.mock.web.test.MockHttpServletRequest;
 
+import static org.junit.Assert.*;
+
 /**
  * @author Rob Harrop
  * @author Juergen Hoeller
@@ -111,6 +110,11 @@ public void getRequestKeepSemicolonContent() throws UnsupportedEncodingException
 
 		request.setRequestURI("/foo;a=b;jsessionid=c0o7fszeb1;c=d");
 		assertEquals("jsessionid should always be removed", "/foo;a=b;c=d", helper.getRequestUri(request));
+
+		// SPR-10398
+
+		request.setRequestURI("/foo;a=b;JSESSIONID=c0o7fszeb1;c=d");
+		assertEquals("JSESSIONID should always be removed", "/foo;a=b;c=d", helper.getRequestUri(request));
 	}
 
 	@Test