SAP connector and JSPDynPage

Question

hi everybody, I am trying to display some data from RFC on a JspDyn Page, I have prepared the project but the data from RFc is not displaying.... the code is
MyJspPage.java:-
package com.ust.jca;
import javax.resource.cci.MappedRecord;
import javax.resource.cci.RecordFactory;
import com.sapportals.connector.connection.IConnection;
import com.sapportals.connector.execution.functions.IInteraction;
import com.sapportals.connector.execution.functions.IInteractionSpec;
import com.sapportals.htmlb.page.DynPage;
import com.sapportals.htmlb.page.PageException;
import com.sapportals.portal.htmlb.page.JSPDynPage;
import com.sapportals.portal.htmlb.page.PageProcessorComponent;
import com.sapportals.portal.ivs.cg.ConnectionProperties;
import com.sapportals.portal.ivs.cg.IConnectorGatewayService;
import com.sapportals.portal.ivs.cg.IConnectorService;
import com.sapportals.portal.prt.component.IPortalComponentRequest;
import com.sapportals.portal.prt.runtime.PortalRuntime;
import com.sapportals.connector.execution.objects.language.IFunction;
import com.sapportals.connector.execution.structures.IRecordSet;
import com.sapportals.connector.execution.structures.IRecordMetaData;
import com.sapportals.connector.execution.structures.IStructureFactory;
import com.sapportals.connector.metadata.functions.IFunctionsMetaData;
import java.util.Vector;
public class MyJspPage extends PageProcessorComponent {
     public DynPage getPage() {
          return new MyJspPageDynPage();
     public static class MyJspPageDynPage extends JSPDynPage {
          private RfcBean myBean;
          public void doInitialization() {
          public void doProcessAfterInput() throws PageException {
          public void doProcessBeforeOutput() throws PageException {
               myBean = new RfcBean();
               ((IPortalComponentRequest) getRequest())
                    .getServletRequest().setAttribute("myBean",myBean);
               IPortalComponentRequest request =
                    (IPortalComponentRequest) this.getRequest();
               // fill your bean with data here...
               try {
                    //Alias is the name of the alias you defined in portal for SAP system
                    getSAPdata(getConnection(request, "P35"));
               } catch (Exception e) {
                    e.printStackTrace();
               this.setJspName("MyJspPage.jsp");
          private IConnection getConnection (IPortalComponentRequest request,String alias)
          throws Exception
               IConnectorGatewayService cgService = (IConnectorGatewayService) PortalRuntime
                         .getRuntimeResources().getService(IConnectorService.KEY);
               ConnectionProperties cp =     new ConnectionProperties(
                         request.getLocale(),request.getUser());
               return cgService.getConnection(alias, cp);                              
          private void getSAPdata(IConnection client) throws Exception {
try
          /* Start Interaction * */
          IInteraction interaction = client.createInteractionEx();
          // call the BAPI_MDDATASET_CREATE_OBJECT
          IInteractionSpec interactionSpec = interaction.getInteractionSpec();
          interactionSpec.setPropertyValue("Name", "ZHRESS_FIRSTDAY_SERVICE");                
          RecordFactory recordFactory = interaction.getRecordFactory();
          MappedRecord input = recordFactory.createMappedRecord("input");
         com.sapportals.connector.metadata.functions.IFunction function = client.getFunctionsMetaData().getFunction("T_ZHRESS_FIRSTDAY");
          IPortalComponentRequest request = (IPortalComponentRequest)this.getRequest();
          //input.put("P35", request.getUser().getUniqueName());
          input.put("SERVICEID","7");     
          input.put("YYUSER" , "EMP");     
          input.put("YYMOD","DIS");               
         MappedRecord importParams = recordFactory.createMappedRecord("input");        
         IStructureFactory structureFactory = interaction.retrieveStructureFactory();
         IRecordSet table = (IRecordSet) structureFactory.getStructure(
         function.getParameter("T_ZHRESS_FIRSTDAY").getStructure());     
          MappedRecord exportParams = (MappedRecord) interaction.execute(interactionSpec, input);
          //myBean.setCW1((String) exportParams.get("CW1"));
          //myBean.setCW1(((Integer) exportParams.get("T_ZHRESS_FIRSTDAY")).toString());                  
         //myBean.setCW1((String) exportParams.get("T_ZHRESS_FIRSTDAY"));
         IRecordSet exportTable = (IRecordSet) exportParams.get("T_ZHRESS_FIRSTDAY");
         exportTable.beforeFirst(); // Moves the cursor before the first row.
         while (exportTable.next()) {
          String column_1  = exportTable.getString("PERNR");
          String column_2  = exportTable.getString("ZDOJ");
          myBean.setCW1((String)exportParams.get(column_1));
          myBean.setCW2((String)exportParams.get(column_2));
         //System.out.println(" COMPANYCODE_LIST-COMP_CODE = " + column_1);
         //System.out.println(" COMPANYCODE_LIST-COMP_NAME = " + column_2);
         myBean.createData(exportTable);
         client.close();
       catch(Exception e){}      
@param ex
@param string
          private void printException(Exception ex, String string) {
               // TODO Auto-generated method stub               
@param string
          private void logMsg(String string) {
               // TODO Auto-generated method stub
RfcBean.java:-
package com.ust.jca;
import java.io.Serializable;
import com.sapportals.connector.execution.structures.IRecordSet;
public class RfcBean implements Serializable {
     private String CW1;
     private String CW2;
@return
     public String getCW1() {
          return CW1;
@return
     public String getCW2() {
          return CW2;
@param string
     public void setCW1(String string) {
          CW1 = string;
@param string
     public void setCW2(String string) {
          CW2 = string;
@param exportTable
     public void createData(IRecordSet exportTable) {
          // TODO Auto-generated method stub
MyJspPage.jsp:-
<%@ taglib uri="tagLib" prefix="hbj" %>
<jsp:useBean id="myBean" scope="request" class="com.ust.jca.RfcBean" />
Hello World
<hbj:content id="myContext" >
  <hbj:page title="PageTitle">
   <hbj:form id="myFormId" >
      <hbj:textView
                    text="<%=myBean.getCW1()%>"
                    id="tv1" 
                    design="HEADER2"
                    encode="false">
        </hbj:textView>
        <br>     
        <hbj:textView
                    text="<%=myBean.getCW2()%>"
                    id="tv1" 
                    design="HEADER2"
                    encode="false">
        </hbj:textView>
   </hbj:form>
  </hbj:page>
</hbj:content>

Answer 1

Hi Sanjyoti:
JCo is one of the connectors for SAP backend through any Java/JSP/Servlet based applications. You need to have the SAP JCo libraries (Jar files) with you to connect to the SAP R/3 system, ofcourse along with the connection parameters.
Here is the sample scenario where you are connecting SAP RFCs/BAPIs with JSPs:
1: first you need to manage required JCo jar files and import it into your project lib folder. this is to have the JCo api at runtime to your application
2: import the library path into your JSP page
3: write a custom method to connect to SAP with connection parameter
4: you should have an idea of which Remote_Func_Module you are connecting and the input and output attributes
5: Execute the functional module and display the results and close the connection parameters.
Its almost like connecting to a RDBMS in a general scenario.
For more information about SAPJCo:
http://help.sap.com/saphelp_nw04/helpdata/en/6f/1bd5c6a85b11d6b28500508b5d5211/content.htm
For example program1 to connect:
http://help.sap.com/saphelp_nw04/helpdata/en/6a/14e13d8ee4535ee10000000a114084/content.htm
For example program2 to connect:
http://help.sap.com/saphelp_nw04/helpdata/en/9d/14e13d8ee4535ee10000000a114084/content.htm
For example program a BAPI:
http://help.sap.com/saphelp_nw04/helpdata/en/de/e6c9255044b241a9401a3a1b7009a9/content.htm
For Tools & Services of SAPJCo:
https://websmp101.sap-ag.de/~form/sapnet?_SHORTKEY=01100035870000463649
If you still want already working program, I can mail it your email id.
Thanks,
MS