Our project uses Bugzilla for tracking issues. I was looking for solution how to submit occured exception programatically. I found quite simple solution using Groovy and I have adapted it to pure Java.

Here is the source code:

import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.httpclient.HttpClient;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
import org.apache.xmlrpc.client.XmlRpcCommonsTransportFactory;

public class Main {
   public static void main(String s[])
      throws MalformedURLException, XmlRpcException {

        HttpClient httpClient = new HttpClient();
        XmlRpcClient rpcClient = new XmlRpcClient();
        XmlRpcCommonsTransportFactory factory = new XmlRpcCommonsTransportFactory(rpcClient);
        XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();

        factory.setHttpClient(httpClient);
        rpcClient.setTransportFactory(factory);
        config.setServerURL(new URL("http://bugzilla.example.com/xmlrpc.cgi"));
        rpcClient.setConfig(config);

        // map of the login data
        Map loginMap = new HashMap();
        loginMap.put("login", "tomas.hubalek@....");
        loginMap.put("password", "*top*secret*");
        loginMap.put("rememberlogin", "Bugzilla_remember");

        // login to bugzilla
        Object loginResult = rpcClient.execute("User.login", new Object[]{loginMap});
        System.err.println ("loginResult=" + loginResult);

        // map of the bug data
        Map bugMap = new HashMap();

        bugMap.put("product", "Playground");
        bugMap.put("component", "Database");
        bugMap.put("summary", "Bug created from groovy script");
        bugMap.put("description", "This is text including stacktrace");
        bugMap.put("version", "unspecified");
        bugMap.put("op_sys", "Linux");
        bugMap.put("platform", "PC");
        bugMap.put("priority", "P2");
        bugMap.put("severity", "Normal");
        bugMap.put("status", "NEW");

        // create bug
        Object createResult = rpcClient.execute("Bug.create", new Object[]{bugMap});
        System.err.println("createResult = " + createResult);
     }
 }

Usage of Apache XML RPC Client is quite straightforward, only gotcha is that mapped parameters must be set passed as new Object[]{bugMap}. Otherwise you get ClassCastException.