Remove unnecessary query parameter encoding check by assuming decoded parameters from serverRequest

Signed-off-by: raccoonback <kosb15@naver.com>

Author: raccoonback

spring-cloud-gateway-server-mvc/src/main/java/org/springframework/cloud/gateway/server/mvc/handler/ProxyExchangeHandlerFunction.java

@@ -87,7 +87,7 @@ private void init() {
 	@Override
 	public ServerResponse handle(ServerRequest serverRequest) {
 		URI uri = uriResolver.apply(serverRequest);
-		MultiValueMap<String, String> params = ensureEncodedQueryParameters(serverRequest);
+		MultiValueMap<String, String> params = MvcUtils.encodeQueryParams(serverRequest.params());
 		// @formatter:off
 		URI url = UriComponentsBuilder.fromUri(serverRequest.uri())
 				.scheme(uri.getScheme())
@@ -134,38 +134,6 @@ private <REQUEST_OR_RESPONSE> HttpHeaders filterHeaders(List<?> filters, HttpHea
 		return filtered;
 	}
 
-	private static MultiValueMap<String, String> ensureEncodedQueryParameters(ServerRequest serverRequest) {
-		boolean encoded = containsEncodedQuery(serverRequest.uri(), serverRequest.params());
-		MultiValueMap<String, String> params = serverRequest.params();
-		if (!encoded) {
-			params = MvcUtils.encodeQueryParams(serverRequest.params());
-		}
-		return params;
-	}
-
-	private static boolean containsEncodedQuery(URI uri, MultiValueMap<String, String> params) {
-		String rawQuery = uri.getRawQuery();
-		boolean encoded = (rawQuery != null && rawQuery.contains("%"))
-				|| (uri.getRawPath() != null && uri.getRawPath().contains("%"));
-
-		// Verify if it is really fully encoded. Treat partial encoded as unencoded.
-		if (encoded) {
-			try {
-				UriComponentsBuilder.fromUri(uri).replaceQueryParams(params).build(true);
-				return true;
-			}
-			catch (IllegalArgumentException ignored) {
-				if (log.isTraceEnabled()) {
-					log.trace("Error in containsEncodedParts", ignored);
-				}
-			}
-
-			return false;
-		}
-
-		return false;
-	}
-
 	public interface URIResolver extends Function<ServerRequest, URI> {
 
 	}