Download ALV Output into Application Server

In the following example we have created a program which displays an ALV grid output on the foreground and generates a text file into application server. We must have access to the specific application server path. Otherwise the report will get dump. 

If we create a background job for this report then the text file will be generated into the application server without having any user interaction at foreground. This report generates Material list based on the material type.

If there is no data based on the material type then the text file will only contain the headers. Every time the file will be overwritten in the application server.

REPORT zsr_test NO STANDARD PAGE HEADING.

TABLES: mara.
TYPE-POOLS slis.
TYPES: BEGIN OF ty_mara,
         matnr TYPE mara-matnr,
         mtart TYPE mara-mtart,
       END OF ty_mara.

DATA:
  "Internal Tables & Work Area
  wa_mara TYPE ty_mara,
  it_mara TYPE TABLE OF ty_mara.

DATA:
  "Field Catalogue
  wa_fcat   TYPE slis_fieldcat_alv,
  it_fcat   TYPE slis_t_fieldcat_alv,

  "Layout
  wa_layout TYPE slis_layout_alv,

  "Top of Page
  wa_top    TYPE slis_listheader,
  it_top    TYPE slis_t_listheader.

INITIALIZATION.
  PARAMETERS: p_mtart TYPE mara-mtart.

START-OF-SELECTION.
  PERFORM get_mara. "--------------------------------------Get Materials

END-OF-SELECTION.
  PERFORM field_catalog. "-------------------------------Field Catalogue
  PERFORM layout. "-------------------------------------------Get Layout
  PERFORM transfer_output. "----------------------Transferring into Text
  PERFORM alv_output. "---------------------------------------ALV Output

TOP-OF-PAGE.
  PERFORM top_of_page. "-------------------------------------Top of Page

*&---------------------------------------------------------------------*
*&      Form  GET_MARA
*&---------------------------------------------------------------------*
*       Get data from MARA
*----------------------------------------------------------------------*
FORM get_mara .

  IF p_mtart IS NOT INITIAL.
    SELECT matnr mtart
      FROM mara INTO TABLE it_mara
      WHERE mtart = p_mtart.

    IF sy-subrc = 0.
      SORT it_mara.
    ENDIF.
  ENDIF.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  FIELD_CATALOG
*&---------------------------------------------------------------------*
*       Field Catalogue
*----------------------------------------------------------------------*
FORM field_catalog .

  DATA: lv_col TYPE i VALUE 0.

  IF it_mara IS NOT INITIAL.
    lv_col            = 1 + lv_col.
    wa_fcat-col_pos   = lv_col.
    wa_fcat-fieldname = 'MATNR'.
    wa_fcat-seltext_l = 'Material No'.
    APPEND wa_fcat TO it_fcat.
    CLEAR  wa_fcat.

    lv_col            = 1 + lv_col.
    wa_fcat-col_pos   = lv_col.
    wa_fcat-fieldname = 'MTART'.
    wa_fcat-seltext_l = 'Material Type'.
    APPEND wa_fcat TO it_fcat.
    CLEAR  wa_fcat.

  ELSE.
    MESSAGE 'No Material Found' TYPE 'I'.
  ENDIF.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  LAYOUT
*&---------------------------------------------------------------------*
*       Prepare Layout
*----------------------------------------------------------------------*
FORM layout .

  wa_layout-zebra             = 'X'.
  wa_layout-colwidth_optimize = 'X'.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  TRANSFER_OUTPUT
*&---------------------------------------------------------------------*
*       Transferring into Text
*----------------------------------------------------------------------*
FORM transfer_output .

  DATA: lv_out   TYPE string,
        lv_fname TYPE string.

  "It will store the text file into Application Server Path
  lv_fname = 'D:\SUM\SUM\abap\MATERIALS.TXT'.

  OPEN DATASET lv_fname FOR OUTPUT IN TEXT MODE ENCODING DEFAULT.

  "Header in Text file
  CONCATENATE 'Material_No.'
              'Material_Type'
              INTO lv_out SEPARATED BY ' '.
  TRANSFER lv_out TO lv_fname.

  "Data in Text file
  LOOP AT it_mara INTO wa_mara.
    CONCATENATE wa_mara-matnr
                wa_mara-mtart
                INTO lv_out SEPARATED BY ' '.
    TRANSFER lv_out TO lv_fname.
    CLEAR: wa_mara, lv_out.
  ENDLOOP.
  CLOSE DATASET lv_fname.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  ALV_OUTPUT
*&---------------------------------------------------------------------*
*       ALV Output
*----------------------------------------------------------------------*
FORM alv_output .

  IF it_fcat IS NOT INITIAL.
    CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
      EXPORTING
        i_callback_program     = sy-repid
        i_callback_top_of_page = 'TOP_OF_PAGE'
        is_layout              = wa_layout
        it_fieldcat            = it_fcat
      TABLES
        t_outtab               = it_mara
      EXCEPTIONS
        program_error          = 1
        OTHERS                 = 2.
  ENDIF.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  TOP_OF_PAGE
*&---------------------------------------------------------------------*
*       Top of Page
*----------------------------------------------------------------------*
FORM top_of_page .

  CLEAR wa_top.
  REFRESH it_top.

  wa_top-typ  = 'H'.
  wa_top-info = 'Material List'.
  APPEND wa_top TO it_top.
  CLEAR  wa_top.

  CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      it_list_commentary = it_top.

ENDFORM.

Now go to AL11 from where we can see the directories of application server.

Double click on the file.

If the file is blank then it will look like following.