Connection to R/3 system from a portal application

Question

hi
I am trying to connect to the R/3 system through a portal application developed in Netweaver Developer Studio.
Please tell what all are the prerequisites for that.
I have created an alias in the portal for the R/3 system and named it as FIN, even though my program is not working.
Are there any setting to be done in the portal
kindly let me know.
thanks
kris

Answer 1

hi Vadim
Thanks for ur fast reply, I have implemented the same code that u have mentioned.herewith I am sending u the code that I have written.
package com.keane.connection;
import javax.resource.ResourceException;
import com.sapportals.connector.connection.IConnection;
import com.sapportals.portal.ivs.cg.IConnectorGatewayService;
import com.sapportals.portal.ivs.cg.IConnectorService;
import com.sapportals.portal.prt.component.AbstractPortalComponent;
import com.sapportals.portal.prt.component.IPortalComponentContext;
import com.sapportals.portal.prt.component.IPortalComponentProfile;
import com.sapportals.portal.prt.component.IPortalComponentRequest;
import com.sapportals.portal.prt.component.IPortalComponentResponse;
import com.sapportals.portal.prt.logger.ILogger;
import com.sapportals.portal.prt.runtime.PortalRuntime;
public class SimpleSapConnection extends AbstractPortalComponent {
  public void doContent(IPortalComponentRequest request, IPortalComponentResponse response) {
     IPortalComponentContext myContext = request.getComponentContext();
     IPortalComponentProfile myProfile = myContext.getProfile();
     // get the default_logger
     ILogger logger = request.getLogger();
     logger.info("SimpleSapConnection: default logger initialized");
     String sapsystem = myProfile.getProperty("SystemIdentifier");
     response.write("SimpleSapConnection: the SystemIdentifier is: " + sapsystem + "<br>");
     IConnection connection = null;
     logger.info("Start to get a Connection to R/3");
     try {
       // get the Connector Gateway Service
       IConnectorGatewayService cgService = (IConnectorGatewayService) PortalRuntime.getRuntimeResources().getService(IConnectorService.KEY);
       if (cgService == null) {
          logger.severe("SimpleSapConnection: Error in get Connector Gateway Service");
          response.write("Error in get Connector Gateway Service <br>");
       try {
          connection = cgService.getConnection(sapsystem, request);
       } catch (Exception e) {
          logger.severe("SimpleSapConnection: Connection to SAP system failed");
          response.write("Connection to SAP system failed <br>");
       } finally {
          // !!!!Important! Connection pooling will not work if the connection object is not closed!!!
          // Next statement needs to be inlcuded in your coding always,
          // otherwise connections won't be reused.
          if (connection != null) {
            try {
               connection.close();
            } catch (ResourceException e) {
               e.printStackTrace();
       if (connection == null) {
          logger.warning("SimpleSapConnection: Connection is null");
          response.write("Connection is null <br>");
       } else {
          logger.info("SimpleSapConnection: Connection succesful");
          response.write("Connection succesful");
     } catch (Exception e) {
       logger.severe("SimpleSapConnection: Exception thrown" + e);
       response.write("Exception thrown" + e);
I have created an R/3 system in the portal and named it as FIN with the same alias name as FIN.
U please tell me what are the other things that we have to do in respect to get connection to R/3, how to configure the R/3 system in the portal and also in the NWDS.
And also the portalapp.xml file i have created
<?xml version="1.0" encoding="utf-8"?>
<application>
  <!THIS FILE IS A COPY OF THE ORIGINAL VERSION STORED IN THE PCD. PLEASE DO NOT CHANGE IT!>
  <application-config>
    <property name="SharingReference" value="com.sap.portal.htmlb,      com.sap.portal.ivs.connectorservice, com.sap.portal.usermanagement,       com.sap.portal.usermapping, landscape"/>
    <property name="releasable" value="true"/>
  </application-config>
  <components>
    <component name="SimpleSapConnection">
      <component-config>
        <property name="ClassName" value="com.keane.connection.SimpleSapConnection"/>
        <property name="SafetyLevel" value="no_safety"/>
      </component-config>
      <component-profile>
        <property name="SystemIdentifier" value="FIN"/>
      </component-profile>
    </component>
  </components>
  <services/>
</application>
what I feel is that there is something wrong with the system I have created in the portal
thanks
krish