------------Here is my client program-------------



package calculator2;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStreamWriter;

import java.io.Writer;

import java.net.HttpURLConnection;

import java.net.URL;

//import dk.dtu.imm.ws.soap.CallResponseMessage;

//import dk.dtu.imm.ws.soap.SoapBody;

//import dk.dtu.imm.ws.soap.SoapFault;

import dk.dtu.imm.ws.soap.SoapMessage;



public class Calculator2 {



public void echo() {



String echo;

String string = "hello service";

try {



URL endPoint = new URL

("http://localhost:8080/axis/CalcServer2.jws");

HttpURLConnection connection = (HttpURLConnection) endPoint
.openConnection();


connection.setRequestMethod("POST");

connection.setRequestProperty("SOAPAction", """");

connection.setRequestProperty("Content-type","text/xml");



connection.setDoOutput(true);

connection.connect();

SoapMessage message = SoapMessage.createCallResponseMessage("echo",
"input", string);

sendSoapRequest(connection, message);

SoapMessage answer = receiveSoapResponse(connection);

connection.disconnect();

echo = answer.getCallResponseMessage().getArgument("echoReturn");
}

catch(Exception me){

System.err.println("Error: " + me.getMessage());

}

}


private SoapMessage receiveSoapResponse(HttpURLConnection connection)
throws IOException {

InputStream result = (InputStream) connection.getContent(); //when i debug i get an exception here: Server returned HTTP response code: 500 for URL: http://localhost:8081/axis/CalcServer2.jws





SoapMessage answer = SoapMessage.newInstance(result);

return answer;

}



private void sendSoapRequest(HttpURLConnection connection,
SoapMessage message) throws IOException {

Writer writer = new OutputStreamWriter(connection.getOutputStream());

writer.write(message.asXML());

writer.close();

}

}

------------- end of client program -----------------



------------- Here is my servlet server -------------







import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;



import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



import dk.dtu.imm.ws.soap.CallResponseMessage;

import dk.dtu.imm.ws.soap.SoapMessage;



public class CalcServer2 extends HttpServlet {



private static final long serialVersionUID = 1L;



public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException,
ServletException {



response.setContentType("text/xml");

PrintWriter writer = response.getWriter();

InputStream stream = request.getInputStream();

SoapMessage message = SoapMessage.newInstance(stream);

System.out.println("Request: "+message.asXML());

CallResponseMessage payload = message.getCallResponseMessage();

if ("echo".equals(payload.getMessageName())) {

String input = payload.getArgument(
"input");

EchoString echo = new EchoString();

String output = echo.echo(input);

SoapMessage result = SoapMessage.createCallResponseMessage(
"echoResponse", "echoReturn", output);

writer.println(result.asXML());

}

}





public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException {

response.setContentType("text/html");

PrintWriter writer = response.getWriter();

writer
.println(" Use the post method to access the Web service. ");

}

}



class EchoString {

public String echo(String input) {

return input;

}

}



--------------------- end of servlet server------------





i use a TCPMonitor to watch the messages and i get
this failures:



------the message from client to server:---------





POST /axis/CalcServer2.jws HTTP/1.1

SOAPAction: ""

Content-type: text/xml

User-Agent: Java/1.5.0_08

Host: 127.0.0.1:8080

Accept: text/html, image/gif, image/jpeg, *; q=.2,
*/*; q=.2

Connection: keep-alive

Content-Length: 188



<?xml version="1.0" encoding="UTF-8"?
>
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"&
gt; hello
service &lt
;/soap:Envelope>



------------------ end message -------------------



----------message from server to client:----------





HTTP/1.1 500 Internal Server Error

Server: Apache-Coyote/1.1

Set-Cookie:
JSESSIONID=91487CF4D9785E87BD26D1CAB26150BB; Path=/axis

Content-Type: text/xml;charset=utf-8

Transfer-Encoding: chunked

Date: Fri, 22 Sep 2006 21:50:33 GMT

Connection: close



1f9

<?xml version="1.0" encoding="UTF-8"?
>
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope
/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-
instance"> &
lt;faultcode
xmlns:ns1="http://xml.apache.org/axis/">ns1:Client&l
t;/faultcode> No such
operation 'echo'
s2:hostname
xmlns:ns2="http://xml.apache.org/axis/">ibm
hostname>
oapenv:Body>

0





its says :

No such
operation 'echo'



How to deal with this problem?

The server is running on tomcat/axis    <<Less