Getting ClassNotFoundException: StreamingDataHandler

Question

I'm developing a MTOM streaming web-service and have run into the following problem. I have the following code in my webservice implementing class:

@Override
public void fileUpload(String name, DataHandler data) 
{
    System.out.println("INVOKING FILE UPLOAD!");

    try
    {
           StreamingDataHandler dh = (StreamingDataHandler) data;
           File file = File.createTempFile("result.txt", "");
           dh.moveTo(file);
           dh.close();
           System.out.println("TEMP FILE WITH DATA: " + file.getAbsolutePath());
    } 
    catch(Exception e) 
    {
           throw new WebServiceException(e);
    }

}

The problem is that Eclipse prompts me to import the StreamingDataHandler in the following way (compiles and deploys - ok):

import com.sun.xml.internal.ws.developer.StreamingDataHandler;

However, I get a ClassNotFoundException at runtime. Could you tell me what should be exported so that it simply works? I tried to include jaxws-ri.jar and stax-ex.jar (v 2.2.7) into my module but without any luck (get other errors). Also the StreamingDataHandler class is under a different package in them (same as prompted by Eclipse but without "internal"). My Project Facets are: Dynamic Web-Module 3.0, Java 1.7, Javascript 1.0, JBoss Web Services Core, server runtime is JBoss 7.1.1. How could I resolve the confusion? Thx.

UPDATE: (solution)

Use this code to write the data:

InputStream is = data.getInputStream(); // DataHandler
File file = File.createTempFile("result.txt", "");
OutputStream os = new FileOutputStream(file.getAbsolutePath());

byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = is.read(buffer)) != -1)
{
    os.write(buffer, 0, bytesRead);
}
os.flush();
os.close();

Just sent 5.9Gb data between two hosts.

Answer 1

The class com.sun.xml.internal.ws.developer.StreamingDataHandler is in rt.jar.

Anyway you shouldn't use sun or com.sun packages in your application.

This Oracle article states why : Why Developers Should Not Write Programs That Call 'sun' Packages.

Those packages are not part of the official and supported Java specification. Using them might lead to incompatibilities between different versions of Java or different implementation (proprietary implementation like IBM and HP). Indeed you are not sure that a sun class you got in one implementation will be part of an other one.