Read BAPI from java

Question

Hi All,
I had a requirement of reading values from BAPI through  Java. Can anybody give me links or documents on how to connect to R/3 system from java. I know this can be done through JCO API or JCA API, but i could not find enough supportive documents in SDN. So please help me out.
Regards
Raghu

Answer 1

Dear Raghu
You can read the BAPI values using JCO objects and I providing you wiht the sample code for the same
public class BapiClass {
     static JCO.Client R3Client=null;
     IRepository R3repository=null;
     JCO.Function function=null;
     JCO.Table dataTable=null;
     String client = "040";
     String login = "developer";
     String pass = "sappmcoe1";
     String language = "en";
     String hostname = "hostname";
     String system = "00";
     String rfcException=null;
     String loginId=null;
// Variables for BAPI Vaues
     String DLCode=null;
     String Status=null;
     String Icon=null;
     String ToolTip=null;
     Alerts alert;
     ArrayList dataList = new ArrayList();
     ArrayList errorList= new ArrayList();
     Iterator alertsIter=null;
     Iterator errorIter=null;
     public BapiClass(){
     public void setLoginId(String loginId) {
          this.loginId = loginId;
     public Iterator getAlertsIterator(){
          return alertsIter;
     public String getAlerts()
          int row=0;
          rfcException = "No Exception";
          try {
//Creating Connection               
R3Client = JCO.createClient(
                         client,
                         login,
                         pass,
                         language,
                         hostname,
                         system);
               R3repository = JCO.createRepository("MyRepository", R3Client);
               }catch (Exception e)
                    rfcException = "<b>Error connecting to database system</b><BR>"+e.toString();
                    return rfcException;
            try{
//Invoking BAPI
                    IFunctionTemplate ftemplate =R3repository.getFunctionTemplate("ZSE_GETALERTS_NEW");          
                    function = new JCO.Function(ftemplate);
                    JCO.ParameterList input=function.getImportParameterList();
                    //input.setValue(loginId,"I_USERID");
                    input.setValue(loginId,"I_USERID");
                R3Client.execute(function);
//E_ALERTS is the BAPI Output Table Name
     dataTable = function.getExportParameterList().getTable("E_ALERTS");
                      row = dataTable.getNumRows();
                      for (int i = 0; i < dataTable.getNumRows(); i++)
                           dataTable.setRow(i);
                           DLCode = dataTable.getString("DLCODE");
                           Status=dataTable.getString("STATUS");
                           Icon = dataTable.getString("ICON");
                           ToolTip=dataTable.getString("TOOLTIP");
                             alert=new Alerts(DLCode,Status,Icon,ToolTip);
                           dataList.add(i, alert);
                      alertsIter = dataList.iterator();
                 catch (Exception ex) {
                 ex.getStackTrace();
                 rfcException = "<b>Error connecting to database system</b><BR>"+ex.toString();
                 return rfcException;
          return rfcException;          
Regards
Noel