SAPJCo RFC Socket

[Former Member]

We are using the SAPJCo classes to connect from an independent Java application in the internal network to WAS6.20 residing in the DMZ.

Ports 32XX & 33XX are open where XX is the WAS System number.

I still encounter

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed.

A point ot be noted is that the same Java application works when I call a R/3 System from the internal network.

Any tips?

Thnx

Meesum

[Former Member]

Edit your system Host file C:\WINDOWS\system32\drivers\etc

and put your Local server ip

as follows

IP(127.0.0.1) localhost

124.153.68.161 nmsapdev // sap server ip add

[Former Member]

Hi Meesum,

I like connect an independent java application in the was6.20. How you have make?, know you some example for this problem?.

Thank's.

Vicente Zaragoza

[Former Member]

Hi,

Here is a skeletal source code for an independent java application and it uses Java Connector, u need to modify it although. Read the documentation for Jco before u modify and run this program.

Best of Luck

import com.sap.mw.jco.*;

public class JcoTest extends Object {

JCO.Client mConnection;

JCO.Repository mRepository;

public JcoTest() {

try {

// Change the logon information to your own system/user

mConnection =

JCO.createClient("", // SAP client

"", // userid

"", // password

"en", // language

"", // application server host name

""); // system number

mConnection.connect();

mRepository = new JCO.Repository("ARAsoft", mConnection);

}

catch (Exception ex) {

ex.printStackTrace();

System.exit(1);

}

JCO.Function function = null;

JCO.Table codes = null;

try {

function = this.createFunction("BAPI_CONTACT_GETLIST");

if (function == null) {

System.out.println("BAPI_CONTACT_GETLIST" +

" not found in SAP.");

System.exit(1);

}

mConnection.execute(function);

JCO.Structure returnStructure =

function.getExportParameterList().getStructure("RETURN");

/* if (! (returnStructure.getString("TYPE").equals("") ||

returnStructure.getString("TYPE").equals("S")) ) {

System.out.println(returnStructure.getString("MESSAGE"));

System.exit(1);

}

*/

codes =

function.getTableParameterList().getTable("PERSON");

for (int i = 0; i < codes.getNumRows(); i++) {

codes.setRow(i);

System.out.println(codes.getString("FIRST_NAME") + '\t' +

codes.getString("LAST_NAME") + '\t' +

codes.getString("BIRTHDAY"));

}

}

catch (Exception ex) {

ex.printStackTrace();

System.exit(1);

}

/* try {

codes.firstRow();

for (int i = 0; i < codes.getNumRows(); i++, codes.nextRow()) {

function = this.createFunction("BAPI_COMPANYCODE_GETDETAIL");

if (function == null) {

System.out.println("BAPI_COMPANYCODE_GETDETAIL" +

" not found in SAP.");

System.exit(1);

}

function.getImportParameterList().

setValue(codes.getString("COMP_CODE"), "COMPANYCODEID");

mConnection.execute(function);

JCO.Structure returnStructure =

function.getExportParameterList().getStructure("RETURN");

JCO.Structure detail =

function.getExportParameterList().

getStructure("COMPANYCODE_DETAIL");

System.out.println(detail.getString("COMP_CODE") + '\t' +

detail.getString("COUNTRY") + '\t'

+ detail.getString("CITY")

);

}

}

catch (Exception ex) {

ex.printStackTrace();

System.exit(1);

}

*/

mConnection.disconnect();

}

public JCO.Function createFunction(String name) throws Exception {

try {

IFunctionTemplate ft =

mRepository.getFunctionTemplate(name.toUpperCase());

if (ft == null)

return null;

return ft.getFunction();

}

catch (Exception ex) {

throw new Exception("Problem retrieving JCO.Function object.");

}

}

public static void main (String args[]) {

JcoTest app = new JcoTest();

}

}

[Former Member]

It was indeed a port problem.