BAPI function call in Java

Question

Hi,
I am trying to make BAPI function call in JAVA. I am using the following libraries for IBM AIX version and the sapjco.jar
1) librfccm.o
2) libsapjcorfc.so
The above 2 libraries are in my java lib path.
But I get a exception and it is referring to sapjcorfc.dll (which is a windows version) instead of referring to libsapjcorfc.so
What should I do so that it refers to libsapjcorfc.so and not sapjcorfc.dll
Error Details:   java.lang.ExceptionInInitializerError: JCO.classInitialize():
Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc
[sapjcorfc (A file or directory in the path name does not exist.)]. java.library.path
[/usr/java14_64/jre/bin:/usr/java14_64/jre/bin:/usr/java14_64/jre/bin/classic:/usr/java14_64/jre/bin:
/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:
/tmp/sapinst_exe.1081378.1199455057:/usr/sap/DP0/SYS/exe/run:/home/db2inst1/sqllib/lib64:
/usr/sap/DP0/DVEBMGS42/exe::/usr/lib:/usr/sap/DP0/DVEBMGS42/j2ee/os_libs:/usr/sap/DP0/DVEBMGS42/exe:
/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:/usr/lib:/lib:/usr/sap/DP0/SYS/exe/run:
/home/db2inst1/sqllib/lib64]

Answer 1

Hi Jawed,
when  I try it as a stand alone java code on IBM AIX version BAPI connection works and it fetches the roles listed for an user from the ACTIVITYGROUP table.
The same piece of code bundled in an ear and when deployed in SAP netweaver portal gives different errors. My sapjco.jar is in application lib folder and it is referred in classpath
first time when i access the application url it gives me
Error Details: java.lang.ExceptionInInitializerError: JCO.classInitialize():
Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc
http://sapjcorfc (A file or directory in the path name does not exist.). java.library.path
[/usr/java14_64/jre/bin:/usr/java14_64/jre/bin:/usr/java14_64/jre/bin/classic:/usr/java14_64/jre/bin:
/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:
/tmp/sapinst_exe.1081378.1199455057:/usr/sap/DP0/SYS/exe/run:/home/db2inst1/sqllib/lib64:
/usr/sap/DP0/DVEBMGS42/exe::/usr/lib:/usr/sap/DP0/DVEBMGS42/j2ee/os_libs:/usr/sap/DP0/DVEBMGS42/exe:
/usr/sap/DP0/DVEBMGS42/exe:/usr/sap/DP0/DVEBMGS42/exe:/usr/lib:/lib:/usr/sap/DP0/SYS/exe/run:
/home/db2inst1/sqllib/lib64]
when i acess the application url next time it gives me
Application error occurred during request processing.
  Details:   java.lang.NoClassDefFoundError: com.sap.mw.jco.JCO (initialization failure)
Exception id: [00145EB7604700720000000F000C20FE00047CA4F0EF0615]
Below is my my javacode - I am calling the method getUserRoles
package com.mysap.sso;
import com.sap.mw.jco.*;
import java.util.ArrayList;
import java.util.List;
public class BapiConnection {
     private static JCO.Client mConnection;
     private static JCO.Repository mRepository;
     private static JCO.Function createFunction(String functionName)
               throws Exception {
          try {
               IFunctionTemplate ft = mRepository.getFunctionTemplate(functionName
                         .toUpperCase());
               if (ft == null) {
                    return null;
               } else {
                    return ft.getFunction();
          } catch (Exception ex) {
               throw ex;
     public List getUserRoles(String user) {
          JCO.Function function = null;
          JCO.Table activitygroups = null;
          List rolesList = null;
          mConnection = null;
          mRepository = null;
          mConnection = JCO.createClient("300", "INVTRY_SEGMT", "Welcome%1",
                    null, "ade00fe", "22");
          try {
               //Connect to the WebAS ABAP with the parameters above
               mConnection.connect();
               //Create a function repository to be able to build a function
               mRepository = new JCO.Repository("INVTRY_SEGMT", mConnection);
               //Get the function
               function = createFunction("BAPI_USER_GET_DETAIL");
               //Set the only import parameter
               function.getImportParameterList().setValue(user, "USERNAME");
               //Execute the function
               mConnection.execute(function);
               //Get the 'ADDRESS' return structure
               activitygroups = function.getTableParameterList().getTable(
                         "ACTIVITYGROUPS");
               rolesList = new ArrayList();
               for (int i = 0; i < activitygroups.getNumRows(); i++, activitygroups
                         .nextRow()) {
                    System.out.println(activitygroups.getString("AGR_NAME"));
                    logger.debug(activitygroups.getString("AGR_NAME"));
                    rolesList.add(activitygroups.getString("AGR_NAME"));
               mConnection.disconnect();
          } catch (Exception ex) {
               System.err.println(ex.toString());
          return rolesList;