Normalize 2+ '/' in path in UriComponentsBuilder

Issue: SPR-12398

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

@@ -720,7 +720,14 @@ public class UriComponentsBuilder {
 			if (this.path.length() == 0) {
 				return null;
 			}
-			String path = this.path.toString().replace("//", "/");
+			String path = this.path.toString();
+			while (true) {
+				int index = path.indexOf("//");
+				if (index == -1) {
+					break;
+				}
+				path = path.substring(0, index) + path.substring(index + 1);
+			}
 			return new HierarchicalUriComponents.FullPathComponent(path);
 		}
 

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

@@ -291,6 +291,14 @@ public class UriComponentsBuilderTests {
 		assertEquals(Arrays.asList("foo", "bar"), result.getPathSegments());
 	}
 
+	// SPR-12398
+
+	@Test
+	public void pathWithDuplicateSlashes() throws URISyntaxException {
+		UriComponents uriComponents = UriComponentsBuilder.fromPath("/foo/////////bar").build();
+		assertEquals("/foo/bar", uriComponents.getPath());
+	}
+
 	@Test
 	public void replacePath() {
 		UriComponentsBuilder builder = UriComponentsBuilder.fromUriString("http://www.ietf.org/rfc/rfc2396.txt");