Is it possible to call web service from ABAP SAP 4.6 c..If yes how

[Former Member]

Hi Friends,

Is it possible to call web service from ABAP-SAP 4.6 c..If yes Could you please let me know how.

Thanks in Advance.

Murali Krishna K

Edited by: Murali Krishna Kakarla on Jan 26, 2008 7:09 PM

Edited by: Murali Krishna Kakarla on Jan 26, 2008 7:11 PM

[Former Member]

Both SAP standard function modules, HTTP_GET and HTTP_POST are available on 4.6c and we use them regularly to call .NET web services.

Terry

Edited by: Terry West on Feb 4, 2008 12:34 PM

[Former Member]

Hi Terry,

So these function modules must use the SAPHTTPA RFC destination which uses the exe saphttp.exe ?

How much abap code lines do you have for a web service call ?

Do you have to code the call specifically for each different web service ?

Are you able to use the WSDL ?

Nice job if you have coded your own private SOAP runtime !

But I don't think this is an easy solution for everybody...

Regards,

Olivier

[Former Member]

>

> Hi Terry,

>

> So these function modules must use the SAPHTTPA RFC destination which uses the exe saphttp.exe ?

>

> How much abap code lines do you have for a web service call ?

> Do you have to code the call specifically for each different web service ?

> Are you able to use the WSDL ?

>

> Nice job if you have coded your own private SOAP runtime !

>

> But I don't think this is an easy solution for everybody...

>

> Regards,

>

> Olivier

Yes, SAPHTTPA (runs on application server) and/or SAPHTTP (runs on front-end pc), one of which, is required for HTTP communication. So far, nothing too elaborate as far as SOAP goes, but the logic is simplistic. Here's some sample code:

  DEST = 'SAPHTTPA'.

  TRANSLATE HOST TO LOWER CASE.

  MYURL = 'wssrvTest/Service.asmx/GetByOrderItem'.

  CONCATENATE HOST MYURL INTO MYURL.

  REQUEST_HEADERS-DATA =  
              'Content-type: application/x-www-form-urlencoded'.

  APPEND REQUEST_HEADERS.
  CLEAR REQUEST_HEADERS.

*........Convert Order Number to External Format........................
  CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
       EXPORTING
            INPUT  = ORDER
       IMPORTING
            OUTPUT = ORDER.

*........Convert Item Number to External Format.........................
  CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
       EXPORTING
            INPUT  = ITEM
       IMPORTING
            OUTPUT = ITEM.

*........Convert Material Number to External Format.....................
  CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
       EXPORTING
            INPUT  = MATERIAL
       IMPORTING
            OUTPUT = MATERIAL.

  CONCATENATE 'sOrder=' ORDER
               INTO REQUEST_BODY-DATA.
  APPEND REQUEST_BODY.
  CLEAR REQUEST_BODY.

  CONCATENATE '&sItem=' ITEM
               INTO REQUEST_BODY-DATA.
  APPEND REQUEST_BODY.
  CLEAR REQUEST_BODY.

  CONCATENATE '&sMaterial=' MATERIAL
              INTO REQUEST_BODY-DATA.
  APPEND REQUEST_BODY.
  CLEAR REQUEST_BODY.

  CALL FUNCTION 'HTTP_POST'
       EXPORTING
            ABSOLUTE_URI          = MYURL
            RFC_DESTINATION       = DEST
            BLANKSTOCRLF          = 'X'
       TABLES
            RESPONSE_ENTITY_BODY  = RESPONSE_BODY
            REQUEST_ENTITY_BODY   = REQUEST_BODY
            RESPONSE_HEADERS      = RESPONSE_HEADERS
            REQUEST_HEADERS       = REQUEST_HEADERS
       EXCEPTIONS
            CONNECT_FAILED        = 1
            TIMEOUT               = 2
            INTERNAL_ERROR        = 3
            TCPIP_ERROR           = 4
            DATA_ERROR            = 5
            SYSTEM_FAILURE        = 6
            COMMUNICATION_FAILURE = 7
            OTHERS                = 8.

  CHECK SY-SUBRC = 0.  "more appropriate msg goes here

  LOOP AT RESPONSE_BODY.
    IF RESPONSE_BODY+0(7) <> '<string' AND
       RESPONSE_BODY+0(8) <> '</string' AND
       RESPONSE_BODY+0(5) <> '<?xml'.

      SPLIT RESPONSE_BODY-DATA AT '=' INTO FIELD_NAME FIELD_VALUE.

      TRANSLATE FIELD_NAME TO UPPER CASE.

      CASE FIELD_NAME.
        WHEN 'HEIGHT'.
          HEIGHT = FIELD_VALUE.

        WHEN 'WIDTH'.
          WIDTH = FIELD_VALUE.

        WHEN 'LENGTH'.
          LENGTH = FIELD_VALUE.

        WHEN 'WEIGHT'.
          WEIGHT = FIELD_VALUE.

        WHEN 'QTY'.
          QTY = FIELD_VALUE.

      ENDCASE.

    ENDIF.
  ENDLOOP.

Hope this helps...

Terry

Edited by: Terry West on Feb 4, 2008 3:08 PM

[Former Member]

Hi Terry,

Thanks for the exemple. Nice but a little too complicated for my taste. I prefer, for the time being (before upgrade from R/3 4.7 to ECC 6.0) to use a .NET connector translator from RFC call to web service.

It will be easier (for us) to convert to native web service call after upgrade.

Regards,

Olivier

[Former Member]

>

> Hi Terry,

>

> Thanks for the exemple. Nice but a little too complicated for my taste. I prefer, for the time being (before upgrade from R/3 4.7 to ECC 6.0) to use a .NET connector translator from RFC call to web service.

> It will be easier (for us) to convert to native web service call after upgrade.

>

> Regards,

>

> Olivier

Hello Olivier,

What exactly are the steps to that go into what you're describing above?

Thanks,

Terry

[Former Member]

Hi Terry,

Thank you very much for your response.

I tried the following code..but nothing is happening..

Please let me know what should i have before write this code..

1) Do i need to install SAP Java connectore..

If yes what is that..and how to install

2) Please let me know what else i need to do.

If possible could please let me know step by step implementation to do this.

[Former Member]

Hi Murali,

the best thing would be upgrading to WAS 6.40 .

Regards

Satish

[markus_doehr2]

4.6c is "ancient" - it has no built-it HTTP service and no concept of "web service". You can, however, plug XI/PI in between and use that as middleware.

Markus

[Former Member]

Hi Markus,

Thanks for your response.

Could you please give me more information, what i need to do if i want to call webservice from SAP 4.6 c (ABAP).

[markus_doehr2]

At first: 4.6c doesn´t have webservices so you can´t call it.

You will need to install PI/XI, write (program) the service there as wrapper for the 4.6c system.

Markus

[Former Member]

Hi,

Yes Markus is right : you need some kind of connector to "translate" from RFC call to web service call.

PI/XI can be used for that but thare are also other solutions.

For example we often use a specific .NET program developped with help from the SAP .NET connector.

From SAP 4.7 it is viewed as a registered RFC server et it is a web service client.

It works perfectly and if you don't already have PI/XI, it's much lighter to implement.

the downsode, of course, is that you need skilled .NET programmers.

Regards,

Olivier