Null Pointer exception received sometimes while receiving messages

[Ahsan]

My application is working fine and constantly listening for incoming
messages but sometimes this exception is thrown although process keeps
on
working
The session state is :true
Exception in thread "pool-2-thread-42" java.lang.NullPointerException
at java.lang.String.<init>(String.java:479)
at
com.app.smsreceiver.smsutil.messagelistener.onAcceptDeliverSm(me
ssagelistener.java:34)
at org.jsmpp.session.SMPPSession.fireAcceptDeliverSm
(SMPPSession.java:44
3)
at org.jsmpp.session.SMPPSession.access$400(SMPPSession.java:
92)
at
org.jsmpp.session.SMPPSession$ResponseHandlerImpl.processDeliverSm(SM
PPSession.java:460)
at
org.jsmpp.session.state.SMPPSessionBoundRX.processDeliverSm0
(SMPPSess
ionBoundRX.java:109)
at org.jsmpp.session.state.SMPPSessionBoundRX.processDeliverSm
(SMPPSessi
onBoundRX.java:51)
at org.jsmpp.session.PDUProcessTask.run(PDUProcessTask.java:
81)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask
(ThreadPoolExec
utor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run
(ThreadPoolExecutor
.java:675)
at java.lang.Thread.run(Thread.java:595)
The session is :BOUND_RX

please let me know what is wrong with it.

regards,

[Ahsan]

I have found that when i send empty message i get this exception

Please let me know what can be done urgently.

regards,

[uud ashr]

I think it happen when the dataSm.getShortMessage() return null value.

You should carefull when implementing MessageReceiverListener#onAcceptDeliverSm(DeliverSm)

by checking the null value

String shortMessage = null;

if (dataSm.getShortMessage() != null) {

    shortMessage = new String(shortMessage);

} else {

    // keep the shortMessage null

}

Regards, 

uudashr

[Ahsan]

Thank you the problem has been resolved.

regards,
-Ahsan-

> > > regards,- Hide quoted text -
>
> - Show quoted text -

[Eric Itzhak]

If the shortMessage is null then how do i get a DeliveryReceipt?

I don't get it sometimes but all the time.

Could this be related to the fact that I'm send the SMS content via message_payload?

בתאריך יום שבת, 28 במרץ 2009 08:08:42 UTC+3, מאת uudashr:

[Eric Itzhak]

To whom it may concern, I saw that with my SMSC I get null message and optional parameters contained message_state and receipt_messate_id, so I solved it with the following code :

            try {

          

                

                OptionalParameter[]  prms = deliverSm.getOptionalParametes();

                for(OptionalParameter param : prms){

                    

                    byte[] bytes  = param.serialize();

                   

                    if (param.tag == Tag.MESSAGE_STATE.code()){ 

                        

                         int message_state = bytes[4];

                         System.out.println("Message state : "+message_state);

                         

                    }

                     

                    else if(param.tag == Tag.RECEIPTED_MESSAGE_ID.code()){

                        

                        byte[] messageIdArray = new byte[bytes.length -4];

                        System.arraycopy(bytes,4,messageIdArray,0,messageIdArray.length);

                        String message_id = new String(messageIdArray);

                        System.out.println("deliver_sm message_id : "+message_id);

                        

                    }

                     

                

                      

                       

               }

                

      

      

            } catch (Exception e) {

                System.err.println("Failed getting delivery receipt");

                e.printStackTrace();

            }

בתאריך יום שלישי, 17 בדצמבר 2013 18:26:21 UTC+2, מאת Eric Itzhak: