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Posted to soap-user@xml.apache.org by Sandeep Heer <sa...@hitachi-eu.com> on 2001/12/11 11:56:30 UTC
Simple SOAP application not working. Help!
Hi,
I am trying to write a simple SOAP application which is a quiz. The
client (a java app) sends a SOAP message to a web service (a java
class) requesting a question. The web service responds by sending a
question to the client.
I have written the code for the client and web service. I have deployed
the web service class using the SOAP admin screen.
But...i get an error! When the client sends the first SOAP message to
the web service, it does not appear to reach it (i put a system.out at
the beginning of the web service code and nothing came out on the
screen. Instead it comes back as a SOAP error message apparently from
the messagerouter.
Below i have added all the details i can. I am a newbie at this so i am
sure that it is a simple mistake which someone should easily spot. Any
help would be appreciated.
And yes,
I have checked that the messagerouter is there by going to the URL in
IE.
I have ensured Tomcat is running.
I have JDK1.3.1 and soap.jar, activation.jar etc. etc.
I have put my webservice class in the TomCat directory (i did not know
exactly where it goes so i put it in every directory.) I did this with a
previous example (XML RPC) and Tomcat was able to find it.
P.S The first message sent to the webservice is now an XML file
containing irrelevant data. Also the web service is simplified to help
find the problem (i.e. it does not select and send back a question,
instead it sends back anything).
-------------------------------------
The error message
-------------------------------------
<?xml version='1.0' encoding='UTF-8'?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/1999/XMLSchema">
<SOAP-ENV:Body>
<SOAP-ENV:Fault>
<faultcode>SOAP-ENV:Server</faultcode>
<faultstring>Exception while handling service request:
org/apache/soap/Envelope</faultstring>
<faultactor>/soap/servlet/messagerouter</faultactor>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
--------------------------------------------------------------------
The XML file read in by the client and then sent to the web service
--------------------------------------------------------------------
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<requestIn xmlns="qService">
<item>
<productName>Baby Monitor</productName>
<quantity>1</quantity>
<price>39.98</price>
<shipDate>1999-05-21</shipDate>
</item>
</requestIn>
</s:Body>
</s:Envelope>
------------------------------------------------------------------
The client code
------------------------------------------------------------------
package soapmessages;
import java.util.*;
import org.w3c.dom.Document;
import javax.xml.parsers.DocumentBuilder;
import java.net.*;
import java.io.*;
import org.xml.sax.*;
import org.apache.soap.util.xml.XMLParserUtils;
import org.apache.soap.*;
import org.apache.soap.messaging.Message;
import org.apache.soap.transport.SOAPTransport;
/**
* Title: Soap Client
* Description: Client used in soap messaging
* Copyright: Copyright (c) 2001
* Company:
* @author Sandeep Heer
* @version 1.0
*/
public class soapClient {
String name;
int score = 0;
int qNo = 0;
static URL serviceURL;
public static void main(String[] args) throws MalformedURLException
{
serviceURL = new
URL("http://localhost:8080/soap/servlet/messagerouter");
soapClient sC = new soapClient();
sC.startup();
}
public void startup()
{
try
{
System.out.println("Welcome to the...! \n");
System.out.println("Please enter... \n");
BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
name = br.readLine().trim();
askQuestions();
}
catch(IOException e)
{
System.out.println("Incorrect value entered" + e);
}
}
public void askQuestions() throws IOException
{
while(qNo < 11)
{
try{
String answer = getQuestion();
BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
if (answer.equals(br.readLine().trim()));
score++;
qNo++;
}
catch (SOAPException a)
{
System.out.println(a.toString());
}
}
System.out.println("Your score" + score);
}
public String getQuestion() throws IOException, SOAPException
{
Document doc = null;
String answer = null;
File file1 = new File("c:\\msg1.xml");
try
{
FileReader sr = new FileReader (file1);
DocumentBuilder builder = XMLParserUtils.getXMLDocBuilder();
doc = builder.parse(new InputSource(sr));
if (doc==null)
{
throw new SOAPException("Error 01", "Error parsing XML
message");
}
Envelope msgEnvelope =
Envelope.unmarshall(doc.getDocumentElement());
System.out.println(msgEnvelope.toString());
Message msg = new Message();
msg.send(serviceURL, "qService", msgEnvelope);
SOAPTransport transport = msg.getSOAPTransport();
BufferedReader resReader = transport.receive();
if (resReader == null)
throw new SOAPException("Error 02","Error receiving XML
message");
SaxParserBean parser = new SaxParserBean();
String line=null;
while((line=resReader.readLine()) != null)
{
System.out.println(line);
}
Enumeration theQuestion = parser.parse(resReader);
System.out.println((String)theQuestion.nextElement());
answer = (String)theQuestion.nextElement();
}
catch (SAXException f)
{
System.out.println("SAX Error" + f);
}
return answer;
}
}
--------------------------------------------------------------
Web Service code
--------------------------------------------------------------
package soapmessages;
import org.apache.soap.*;
import java.io.*;
import java.util.*;
import org.apache.soap.encoding.*;
import org.apache.soap.encoding.soapenc.*;
import org.apache.soap.rpc.*;
import org.apache.soap.util.xml.*;
import java.net.*;
import javax.mail.*;
import org.w3c.dom.*;
/**
* Title: qService
* Description: Web service to talk to client
* Copyright: Copyright (c) 2001
* Company:
* @author Sandeep Heer
* @version 1.0
*/
public class qService {
public void requestIn(Envelope env, SOAPContext req, SOAPContext res)
throws IOException, MessagingException
{
System.out.println("Am i here yet?");
res.setRootPart("OK thanks, ",
"text/xml");
}
}
-------------------------------------------------------------------
Deployed Service Information (soap admin screen) for web service
-------------------------------------------------------------------
ID qService
Scope Application
Provider Type java
Provider Class soapmessages.qService
Use Static Class false
Methods requestIn
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