Reinstate removal of jsessionid from lookup path

Closes gh-25864

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

@@ -521,7 +521,8 @@ public class UrlPathHelper {
 	 * @return the updated URI string
 	 */
 	public String removeSemicolonContent(String requestUri) {
-		return (this.removeSemicolonContent ? removeSemicolonContentInternal(requestUri) : requestUri);
+		return (this.removeSemicolonContent ?
+				removeSemicolonContentInternal(requestUri) : removeJsessionid(requestUri));
 	}
 
 	private String removeSemicolonContentInternal(String requestUri) {
@@ -535,6 +536,22 @@ public class UrlPathHelper {
 		return requestUri;
 	}
 
+	private String removeJsessionid(String requestUri) {
+		String key = ";jsessionid=";
+		int index = requestUri.toLowerCase().indexOf(key);
+		if (index == -1) {
+			return requestUri;
+		}
+		String start = requestUri.substring(0, index);
+		for (int i = key.length(); i < requestUri.length(); i++) {
+			char c = requestUri.charAt(i);
+			if (c == ';' || c == '/') {
+				return start + requestUri.substring(i);
+			}
+		}
+		return start;
+	}
+
 	/**
 	 * Decode the given URI path variables via {@link #decodeRequestString} unless
 	 * {@link #setUrlDecode} is set to {@code true} in which case it is assumed
@@ -639,7 +656,13 @@ public class UrlPathHelper {
 	 * <li>{@code defaultEncoding=}{@link WebUtils#DEFAULT_CHARACTER_ENCODING}
 	 * </ul>
 	 */
-	public static final UrlPathHelper rawPathInstance = new UrlPathHelper();
+	public static final UrlPathHelper rawPathInstance = new UrlPathHelper() {
+
+		@Override
+		public String removeSemicolonContent(String requestUri) {
+			return requestUri;
+		}
+	};
 
 	static {
 		rawPathInstance.setAlwaysUseFullPath(true);

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

@@ -133,7 +133,7 @@ public class UrlPathHelperTests {
 		assertEquals("/foo;a=b;c=d", helper.getRequestUri(request));
 
 		request.setRequestURI("/foo;jsessionid=c0o7fszeb1");
-		assertEquals("/foo;jsessionid=c0o7fszeb1", helper.getRequestUri(request));
+		assertEquals("/foo", helper.getRequestUri(request));
 	}
 
 	@Test