SAP Connectivity in Netweaver developer studio...

Question

Hi everyone,
I am trying to use the feature of "SAP connectivity" in the NDS.
I created a proxy for a simple RFC.
What I am trying to do is to call the RFC from a Java code.
Here is what I wrote :
          try {
          Z_Rfc_Ws_Test2_Input input = new Z_Rfc_Ws_Test2_Input();
          input.setInput("Salut la compagnie");
          SAPProxy_PortType proxy = new SAPProxy_PortType();
          Z_Rfc_Ws_Test2_Output output = proxy.z_Rfc_Ws_Test2(input);
          } catch (Exception e) {
               e.printStackTrace();
I get an exception because I didn't specify the username and its credentials. Of course, I have to specify the server and the client number.
Here is the exception :
com.sap.aii.proxy.framework.core.BaseProxyException: JCoClient connection missing
     at com.sap.aii.proxy.framework.core.AbstractProxy.send$(AbstractProxy.java:150)
     at com.proxy.SAPProxy_PortType.z_Rfc_Ws_Test2(SAPProxy_PortType.java:16)
     at Client.main(Client.java:45)
Can someone help with this issue ?
Thanks in advance.

Answer 1

Hi David,
         In your below code the JCO configurations is missing I mean ur JCO client. Try some thing like this which is self explanatory.
(ur package name here if u have any)
import com.sap.mw.jco.*;
public class Jco {
     public static void main(String[] args) {
          // Necessary fields for Connection
          JCO.Client myConnection = null;
          JCO.Repository myRepository = null;
          JCO.Function myFunction = null;
          JCO.Field myHostName = null;
          // Establishing a connection
          try{
               // Defining the connection parameters
               myConnection = JCO.createClient("Client","User","Password","Lang","ServerIP","Sys Number");
               myConnection.connect();
               // Creating a repository
               myRepository = new JCO.Repository(attribute,myConnection);
          }catch(Exception e){
               System.out.println(e.toString());
               System.exit(1);
                    // Finally closing the connection
          finally{
               myConnection.disconnect();