Call a Servlet from a JAX-WS Web service

[Gaby Bag]

Hello all,

As part of a research project, we use a Web application implemented in JSF 1.2 to realize some computations for us. In order to be able to invoke methods from this application, which is deployed on a Apache Tomcat 6 server contained in the application itself, we implement a new servlet inside it to call what needed. This servlet is executed from the "outside" world through a Java program from terminal and everything works perfectly. Here is the code of this program

import java.io.*;
import java.net.*;
import java.util.Scanner;

public class ContactBemServlet {
    public static void main( String [] args ) {

	Scanner input = new Scanner(System.in);
	System.out.println("Please give the CaseID to suspend :");
	String caseNbr = input.nextLine();
	String arg = "caseID=" + caseNbr;
	System.out.println(arg);
        
        try {
            
            URL url = new URL("http://localhost:8080/monitorService/bem");
            URLConnection conn = url.openConnection();
            conn.setDoOutput(true);
            
            BufferedWriter out = 
                new BufferedWriter( new OutputStreamWriter( conn.getOutputStream() ) );
            out.write(arg);
            out.flush();
            out.close();
        }
        catch ( MalformedURLException ex ) {
            // a real program would need to handle this exception
        }
        catch ( IOException ex ) {
            // a real program would need to handle this exception
        }
    }
}

As our project will be also deployed on a Tomcat Server, we must port this program in a Web service and because the SOA is written in Java, we choose JAX-WS. I'm not a specialist of this kind of technology so, please, be compassionate with me if my stuff is a little bit stupid or naive . Here is the code of the implementation class :

package org.bem.ws.impl;

import org.bem.ws.ContactBem;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import javax.jws.WebService;


@WebService(endpointInterface = "org.bem.ws.ContactBem")
public class ContactBemImpl implements ContactBem {

    @Override
    public String CallBem(String caseID) {
        String response = "tete";
        String param = "caseID=" + caseID;
        
        try {
              URL url = new URL("http://localhost:8080/monitorService/bem");
              URLConnection conn = url.openConnection();
              conn.setDoOutput(true);

              BufferedWriter out =
                      new BufferedWriter(new OutputStreamWriter(conn.getOutputStream()));

              out.write(param);
              out.flush();
              out.close();
              response = "toto";  
        } catch (MalformedURLException ex) {
            response = "titi";  
        } catch (IOException ex) {
            response = "tata";  
        }

        return (response);
    }
}

As you can see, I added some stuff (toto, titi and tata strintgs) in the code to see where the problem might be. I use soapUI to realize tests and see if my this Web service works.

Unfortunately, it does not work at all. There is no exception in the try block as I received "toto" as response but nothing is done by the contacted servlet. To be honest, I don't see where could be the problem. I made some searches on Internet and forums but I found nothing related to my problem.

I someone could give me the reason of this failure or explain why it cannot work ? Am I miss the point ? Is it forbidden to do that ? Is there a way to do this particular kind of stuff ?

Thanks in advance for any answer or advice :-)

Cheers
Gaby