Help!!! Need an Servlet Example

Gereanu Raul Wed, 13 Mar 2002 07:54:37 -0800

Hello everybody,

I've try to find an simple servelt example for am XML-RPC Server. I found different souces, many of them for an independent XML-RPC server. I lookup on xml.apache.org, but I could't find anything . I lookup up , too. at helma.org, and in many other web sites, but nothing. I was able to run an XML -RPC Client, but XML-RPC Server dosn't work. Here my code :

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

import java.util.Vector;
import helma.xmlrpc.*;
public class ExampleServlet extends XmlRpcServlet
{
XmlRpcServer xmlrpc;
public void init (ServletConfig config) throws ServletException {
    xmlrpc = new XmlRpcServer ();
    xmlrpc.addHandler ("test", new NewHandler() );
    }

public void doPost (HttpServletRequest request, HttpServletResponse response) {

    try {
      PrintWriter out = response.getWriter() ;
      byte[] tempbyte = new byte[1000] ;
      tempbyte = xmlrpc.execute(request.getInputStream());
      String temp = new String(tempbyte);
      response.setContentType("text/xml");
      response.setContentLength(temp.length());
      out.println(temp);
    } catch (IOException e) {
      System.err.println ("Crud");
      e.printStackTrace();
    }
}

public void doGet( HttpServletRequest request, HttpServletResponse response ) {
    try {
      response.setContentType ("text/html");
      PrintWriter out = new PrintWriter (response.getWriter(), true);
      out.print ("Need to use POST.");
    } catch (Exception e) {
      e.printStackTrace();
    }
}

public void destroy () {
System.out.println ("TestServer destroyed...");
}

public Object execute (String methodname, Vector params) {
return "This is a fix string";
}

}

public class NewHandler {
// Simple test functions
public int intAdd(int arg)
{

return 333;
}
}

I call this code with the folowing html :

with this value for the textarea field :

<?XML VERSION="1.0"?>
<methodCall>
<methodName>test.intAdd</methodName>
<params>
<param>
<value><i4>33</i4></value>
</param>
</params>
</methodCall>

and alway I get the following response :

<?xml version="1.0" encoding="ISO-8859-1" ?>

- <methodResponse>

- <fault>

- <value>

- <struct>

- <member>

<name>faultString</name>

<value>java.lang.NullPointerException</value>

</member>

- <member>

<name>faultCode</name>

- <value>

</value>

</member>

</struct>

</value>

</fault>

</methodResponse>

Please help me with any code that work!!!

Thanks in advance,

Raul Gereanu

Help!!! Need an Servlet Example

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