Hi,

I'm facing a problem trying to port my web app from wf14 to wf16.

The same code(a rest call) works on wf14 but not on wf16.

On wf 16 I have

.....

javax.ws.rs.ProcessingException: RESTEASY004655: Unable to invoke request

......

Caused by: javax.ws.rs.ProcessingException: RESTEASY003215: could not find writer for content-type application/json type: java.lang.String

The call code is very simple

Response response = ClientBuilder.newBuilder().build().target(serviceUrl).request().post(Entity.entity(request, MediaType.APPLICATION_JSON));

where "request" is the string obtained converting my entity in json using Gson.

I have not any specific "rest" dependencied but

<dependency>

      <groupId>javax</groupId>

      <artifactId>javaee-api</artifactId>

      <version>[8.0]</version>

      <scope>provided</scope>

</dependency>

Any ideas?  Any help is appreciated.

Thanks

Antonio