How to create a logon ticket via Java?

Question

Hi all,
I need to create a SAP logon ticket programmatically. Do you have some useful documntations or links?
Thanks.
Vito

Answer 1

try this, may be it will help you.
Example1.java - call the rfc module 'STFC_CONNECTION' with custom definition
of function metadata. Please notice, the communication with static
metadata interface definitions is dangerous. The inconsistencies in the
interface definitions may cause corrupted data, errors while communication or
even application crashes. In Example2 you can see, how to avoid these problems.
Property of SAP AG, Walldorf
(c) Copyright SAP AG, Walldorf, 2000-2003.
All rights reserved.
import com.sap.mw.jco.*;
Example1 - start a simple call with static metadata definition
@version 1.0
@author  SAP AG, Walldorf
public class Example1 {
  public static void main(String[] argv)
    JCO.Client client = null;
    try {
      // Print the version of the underlying JCO library
      System.out.println("\n\nVersion of the JCO-library:\n" +
\n" + JCO.getMiddlewareVersion());
      // Create a client connection to a dedicated R/3 system
      client = JCO.createClient( "clientnum",       // SAP client
                                     "JOHN",   // userid
                                     "SMITH",     // password
                                     "EN",        // language
                                     "111.111.11.51", // host name
                                     "00" );      // system number
      // Open the connection
      client.connect();
      // Get the attributes of the connection and print them
      JCO.Attributes attributes = client.getAttributes();
      System.out.println("Connection attributes:\n" +
\n" + attributes);
      boolean is_backend_unicode = attributes.getPartnerCodepage().equals("4102") ||
                                   attributes.getPartnerCodepage().equals("4103");
      // Create metadata definition of the input parameter list
      JCO.MetaData input_md = new JCO.MetaData("INPUT");
      input_md.addInfo("REQUTEXT", JCO.TYPE_CHAR, 255, 255 * (is_backend_unicode? 2 : 1 ),
                        -1, 0, null, null, 0, null, null);
      // Create the input parameter list from the metadata object
      JCO.ParameterList input = JCO.createParameterList(input_md);
      // Set the first (and only) input parameter
      input.setValue("This is my first JCo example.", "REQUTEXT");
      // Create metadata definition of the output parameter list
      JCO.MetaData output_md = new JCO.MetaData("OUTPUT");
      // Specify the parameters types of the function will be returned
      output_md.addInfo("ECHOTEXT", JCO.TYPE_CHAR, 255, 255 * (is_backend_unicode? 2 : 1 ),
                         -1, 0, null, null, 0, null, null);
      output_md.addInfo("RESPTEXT", JCO.TYPE_CHAR, 255, 255 * (is_backend_unicode? 2 : 1 ),
                         -1, 0, null, null, 0, null, null);
      // Create the output parameter list from the metadata object
      JCO.ParameterList output = JCO.createParameterList(output_md);
      // Call the function
      client.execute("STFC_CONNECTION", input, output);
      // Print the result
      System.out.println("The function 'STFC_CONNECTION' returned the following parameters:\n" +
      for (int i = 0; i < output.getFieldCount(); i++) {
          System.out.println("Name: " +  output.getName(i) + " Value: " + output.getString(i));
      }//for
      // All done
      System.out.println("\n\nCongratulations! It worked.");
    catch (Exception ex) {
      System.out.println("Caught an exception: \n" + ex);
    finally {
        // do not forget to close the client connection
        if (client != null) client.disconnect();