while executing a function its throwing NullPointer exception

[Former Member]

String ABAP_AS = "ABAP_AS_WITHOUT_POOL";

Properties connectProperties = new Properties();

connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "localhost");

connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "00");

connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "001");

connectProperties.setProperty(DestinationDataProvider.JCO_USER, "username");

connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "password");

connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "en");

connectProperties.setProperty(DestinationDataProvider.JCO_CPIC_TRACE, "2");

createDataFile(ABAP_AS, "jcoDestination", connectProperties);

JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS);

JCoRepository rep=destination.getRepository();

System.out.println(destination.getR3Name());

System.out.println(destination.getRepositoryUser());

System.out.println(rep.getName());

JCoFunction function =destination.getRepository().getFunction("/ACTIP/GET_URLS");

//char y[]={'I','N','V','O','I','C','E'};

function.getImportParameterList().setValue("DOCTYPE","Invoice");

function.getImportParameterList().setValue("COUNT", "00001");

//char x[]={'0','1'};

function.getImportParameterList().setValue("ARCHIVE_ID", "A5");

function.getImportParameterList().setValue("SYSTEM", "");

System.out.println(function);

function.execute(destination);

System.out.println(function.getExportParameterList());

JCoParameterList list=function.getExportParameterList();

for (Iterator iterator = list.iterator(); iterator.hasNext();) {

System.out.println(iterator.next());

}

System.out.println(function.getExportParameterList());

System.out.println(function.getExportParameterList()

.getString("URL_LIST"));

System.out.println(function.getExportParameterList()

.getString("/ACTIP/URL_LIST"));

if i executes the above code i am getting the following exception from command promt

com.sap.conn.jco.JCoException: (108) JCO_ERROR_INTERNAL: java.lang.NullPointerException

at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:1087)

at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:879)

at com.sap.conn.jco.rt.RfcDestination.execute(RfcDestination.java:1189)

at com.sap.conn.jco.rt.RfcDestination.execute(RfcDestination.java:1163)

at com.sap.conn.jco.rt.AbapFunction.execute(AbapFunction.java:302)

at SAPClient.executeFunction(SAPClient.java:32)

at SAPClient.main(SAPClient.java:130)

Caused by: java.lang.NullPointerException

at com.sap.conn.rfc.engine.RfcGet.rfcget_run(RfcGet.java:273)

at com.sap.conn.rfc.engine.RfcGet.ab_rfcget(RfcGet.java:23)

at com.sap.conn.rfc.engine.RfcRcv.ab_rfcreceive(RfcRcv.java:34)

at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcGetData(RfcIoOpenCntl.java:2360)

at com.sap.conn.rfc.sysfunc.RfcSystemInfo.execute(RfcSystemInfo.java:42)

at com.sap.conn.rfc.engine.RfcGetName.ab_RfcDispatchLoc(RfcGetName.java:82)

at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcReceive(RfcIoOpenCntl.java:1925)

at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.execute(MiddlewareJavaRfc.java:1691)

at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:1046)

... 6 more

[former_member218672 · Accepted solution]

Hi,

You better debug your program by switching on the debug mode of the server, then you'll find your error in the program.

Best Regards,

Sen

[Former Member]

Actually this is problem with function in SAP System.