javax.ws.rs.ProcessingException：RESTEASY004655：无法调用请求

Question

我想，作为一个客户端，张贴一个zip文件到“REST服务”，使用RestEasy的3.0.19。这是代码：

public void postFileMethod(String URL)  {       
         Response response = null;              
         ResteasyClient client = new ResteasyClientBuilder().build();
         ResteasyWebTarget target = client.target(URL); 

         MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();

         FileBody fileBody = new FileBody(new File("C:/sample/sample.zip"), 
ContentType.MULTIPART_FORM_DATA);              

         entityBuilder.addPart("my_file", fileBody);            
         response = target.request().post(Entity.entity(entityBuilder, 
MediaType.MULTIPART_FORM_DATA));            
}   

我得到的错误是这个：

javax.ws.rs.ProcessingException: RESTEASY004655: Unable to invoke request
....
Caused by: javax.ws.rs.ProcessingException: RESTEASY003215: could not 
find writer for content-type multipart/form-data type: 
org.apache.http.entity.mime.MultipartEntityBuilder

我怎么解决这个问题？我看着一些帖子，但代码是从我的略有不同。

感谢大伙们。