Upload File from SAP Presentation Server using ABAP

Use the following steps to upload data from a file in SAP presentation server to ABAP internal table.

1. Declare a ABAP internal table.
2. Use function module ‘GUI_UPLOAD’ or ‘GUI_UPLOAD’ method of ‘CL_GUI_FRONTEND_SERVICES’ class to upload the data to ABAP internal table.
3. Process the data in the internal table.

Below program uses the function module GUI_UPLOAD to upload the file.

*----------------------------------------------------------------------*
*     Data Decalaration
*----------------------------------------------------------------------*
DATA: gt_spfli  TYPE TABLE OF spfli,
      gwa_spfli TYPE spfli.

DATA: gv_filename TYPE string,
      gv_filetype TYPE char10.
*----------------------------------------------------------------------*
*     START-OF-SELECTION
*----------------------------------------------------------------------*
PERFORM read_file.
PERFORM process_data.

*&---------------------------------------------------------------------*
*&      Form  read_file
*&---------------------------------------------------------------------*
FORM read_file.
*Move complete file path to file name
  gv_filename = 'C:\test\data.txt'.

*Upload the data from a file in SAP presentation server to internal
*table
  CALL FUNCTION 'GUI_UPLOAD'
    EXPORTING
      filename            = gv_filename
      filetype            = 'ASC'
      has_field_separator = 'X'
    TABLES
      data_tab            = gt_spfli.

ENDFORM.                    " read_file

*&---------------------------------------------------------------------*
*&      Form  process_data
*&---------------------------------------------------------------------*
FORM process_data.

*Display the internal table data
  LOOP AT gt_spfli INTO gwa_spfli.
    WRITE:/ gwa_spfli-carrid,
            gwa_spfli-connid,
            gwa_spfli-countryfr,
            gwa_spfli-cityfrom,
            gwa_spfli-airpfrom,
            gwa_spfli-countryto,
            gwa_spfli-cityto,
            gwa_spfli-airpto,
            gwa_spfli-arrtime.
    CLEAR: gwa_spfli.
  ENDLOOP.
ENDFORM.                    " process_data

When you execute the above program reads the data from the file in presentation server and displays the following output.

You can also use GUI_UPLOAD method of CL_GUI_FRONTEND_SERVICES class to upload file from presentation server. Instead of calling GUI_UPLOAD function module in the read_file subroutine of above program, call the GUI_UPLOAD method of **CL_GUI_FRONTEND_SERVICES class.

CALL METHOD cl_gui_frontend_services=>gui_upload
    EXPORTING
      filename            = gv_filename
      filetype            = 'ASC'
      has_field_separator = 'X'
    CHANGING
      data_tab            = gt_spfli.