update samples

Author: wing328

samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/ApiClient.java

@@ -558,7 +558,7 @@ private WebClient.RequestBodySpec prepareRequest(String path, HttpMethod method,
             builder.queryParams(queryParams);
         }
 
-        final WebClient.RequestBodySpec requestBuilder = webClient.method(method).uri(builder.encode().toUriString(), pathParams);
+        final WebClient.RequestBodySpec requestBuilder = webClient.method(method).uri(builder.build(false).toUriString(), pathParams);
         if(accept != null) {
             requestBuilder.accept(accept.toArray(new MediaType[accept.size()]));
         }