Problem in web service client while trying to consume a service exposed on the net

[Prasad Shindikar]

this is the link for the WSDL file of an exposed web service on the internet.
http://www.freewebs.com/jimmy_cheng/CurrencyExchangeService.wsdl

I have tried to write a java web service client for the same.

However, the code gives an error.
The error stack is as shown below.

I am using Eclipse Europa, JDK 1.5

  Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
  at $Proxy0.getRate(Unknown Source)
  at com.client.CurrencyClient.main(CurrencyClient.java:28)Caused by: java.rmi.RemoteException:
  Call invocation failed; nested exception is: java.io.IOException: 
  Could not transmit messageat org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:536)
  at org.jboss.ws.core.jaxrpc.client.CallImpl.invoke(CallImpl.java:277)
  at org.jboss.ws.core.jaxrpc.client.PortProxy.invoke(PortProxy.java:151)
  ... 2 moreCaused by: java.io.IOException: Could not transmit message
  at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:204)
  at org.jboss.ws.core.client.SOAPRemotingConnection.invoke(SOAPRemotingConnection.java:77)
  at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:337)
  at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:517)... 4 moreCaused 
  by: org.jboss.remoting.CannotConnectException: Can not connect http client invoker.
  at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:333)
  at org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:135)
  at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
  at org.jboss.remoting.Client.invoke(Client.java:1634)at org.jboss.remoting.Client.invoke(Client.java:548)
  at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:183)... 7 moreCaused 
  by: org.jboss.ws.WSException: Invalid HTTP server response [404] - Not Found
  at org.jboss.ws.core.soap.SOAPMessageUnMarshaller.read(SOAPMessageUnMarshaller.java:77)
  at org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:473)
  at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:305)
  ... 12 more  

The code for my client is :

    
package com.client; 
import java.net.URL;import java.util.Properties; 
import javax.xml.namespace.QName;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory; 
public class CurrencyClient {
public static void main(String[] args) throws Exception {      
/*To access the internet, through the firewalls, we need specific proxy addresses*/
/*Properties sysProps = System.getProperties();        
sysProps.put("proxySet", "");        
sysProps.put("proxyHost", "");        
sysProps.put("proxyPort", "");
*/                
URL url = new URL("http://www.freewebs.com/jimmy_cheng/CurrencyExchangeService.wsdl"); 
QName qname = new QName("http://www.xmethods.net/sd/CurrencyExchangeService.wsdl","CurrencyExchangeService");
System.out.println("Creating a service Using: \n\t" + url + " \n\tand " + qname); 
ServiceFactory factory = ServiceFactory.newInstance();       
Service remote = factory.createService(url, qname);        
System.out.println("Obtaining reference to a proxy object");      
CurrencyExchangePortType proxy = (CurrencyExchangePortType) remote.getPort(CurrencyExchangePortType.class);  
System.out.println("Accessed local proxy: " + proxy);        
float exchangeRate = proxy.getRate("USA", "EUR");       
System.out.println("Exchange Rates between US and India: " + exchangeRate); 
}} 

The webservice interface that i defined:

    package com.client; import java.rmi.Remote; public interface CurrencyExchangePortType extends Remote{public float getRate(String country1, String country2);}  
  

[ October 19, 2008: Message edited by: Balaji Loganathan ]

[Vinod K Singh]

Can you make code more readable?

[Prasad Shindikar]

Hopefully this is more readable !

this is the link for the WSDL file of an exposed web service on the internet.
http://www.freewebs.com/jimmy_cheng/CurrencyExchangeService.wsdl

I have tried to write a java web service client for the same.

However, the code gives an error.
The error stack is as shown below.

 Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
at $Proxy0.getRate(Unknown Source)
at com.client.CurrencyClient.main(CurrencyClient.java:28)
Caused by: java.rmi.RemoteException: Call invocation failed; nested exception is: 
java.io.IOException: Could not transmit message
at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:536)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invoke(CallImpl.java:277)
at org.jboss.ws.core.jaxrpc.client.PortProxy.invoke(PortProxy.java:151)
... 2 more
Caused by: java.io.IOException: Could not transmit message
at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:204)
at org.jboss.ws.core.client.SOAPRemotingConnection.invoke(SOAPRemotingConnection.java:77)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:337)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:517)
... 4 more
Caused by: org.jboss.remoting.CannotConnectException: Can not connect http client invoker.
at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:333)
at org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:135)
at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
at org.jboss.remoting.Client.invoke(Client.java:1634)
at org.jboss.remoting.Client.invoke(Client.java:548)
at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:183)
... 7 more
Caused by: org.jboss.ws.WSException: Invalid HTTP server response [404] - Not Found
at org.jboss.ws.core.soap.SOAPMessageUnMarshaller.read(SOAPMessageUnMarshaller.java:77)
at org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:473)
at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:305)
... 12 more
   

Client Code :

  public static void main(String[] args) throws Exception {
       URL url = new URL("http://www.freewebs.com/jimmy_cheng/CurrencyExchangeService.wsdl");
        QName qname = new QName("http://www.xmethods.net/sd/CurrencyExchangeService.wsdl","CurrencyExchangeService");
        System.out.println("Creating a service Using: \n\t" + url + " \n\tand " + qname);
        
        ServiceFactory factory = ServiceFactory.newInstance();
        Service remote = factory.createService(url, qname);
 
        System.out.println("Obtaining reference to a proxy object");
        CurrencyExchangePortType proxy = (CurrencyExchangePortType) remote.getPort(CurrencyExchangePortType.class);
        System.out.println("Accessed local proxy: " + proxy);
        float exchangeRate = proxy.getRate("USA", "EUR");
        System.out.println("Exchange Rates between US and India: " + exchangeRate);
    }  

The interface that I have defined from the wsdl file :

  package com.client;
 
import java.rmi.Remote;
 
public interface CurrencyExchangePortType extends Remote{
public float getRate(String country1, String country2);
}
  

[William Brogden]

caused by: org.jboss.ws.WSException: Invalid HTTP server response [404] - Not Found

This indicates your request addressing is not getting through to the server side application.

If this was my problem I would start by using SOAPui or TCPMON to capture the exact request text.

Bill