上载和下载CSV文件

sap中把txt 、excel 、文件上载到内表中，txt和csv速度最快。

excel文件导出的csv是用,分隔符分隔的，如果单元格的文本中就有逗号，这样会和分隔符逗号混淆，最好abap产生csv文件模板，代码如下：

REPORT  ztest_bapi.
TYPE-POOLS truxs.

TYPES: BEGIN OF ty_csv,
  name1 TYPE char10,
  name2 TYPE char10,
  name3 TYPE char10,
  name4 TYPE char10,
  END OF ty_csv.

DATA: w_filename TYPE string,
      w_file_path TYPE string,
      w_full_path TYPE string,
      lt_tabout TYPE STANDARD TABLE OF ty_csv,
      ls_tabout TYPE  ty_csv.
DATA: lt_title  TYPE truxs_t_text_data WITH HEADER LINE.

constants: c_tab type c value cl_abap_char_utilities=>HORIZONTAL_TAB.

FIELD-SYMBOLS <fs> TYPE ANY.

ls_tabout-name1 = '物料1'.
ls_tabout-name2 = '物料2'.
ls_tabout-name3 = '物料3'.
ls_tabout-name4 = '物料4'.
APPEND ls_tabout TO lt_tabout.


CALL METHOD cl_gui_frontend_services=>file_save_dialog
    EXPORTING
      default_extension    = 'CSV'
      default_file_name    = '*'
      file_filter          = 'CSV文件(*.CSV)'
    CHANGING
      filename             = w_filename
      path                 = w_file_path
      fullpath             = w_full_path
    EXCEPTIONS
      cntl_error           = 1
      error_no_gui         = 2
      not_supported_by_gui = 3
      OTHERS               = 4.

  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
    WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.


CALL FUNCTION 'SAP_CONVERT_TO_CSV_FORMAT'
* EXPORTING
*   I_FIELD_SEPERATOR          = ';'
*   I_LINE_HEADER              =
*   I_FILENAME                 =
*   I_APPL_KEEP                = ' '
  TABLES
    i_tab_sap_data             = lt_tabout
 CHANGING
   I_TAB_CONVERTED_DATA       = lt_title[]
 EXCEPTIONS
   CONVERSION_FAILED          = 1
   OTHERS                     = 2
          .
IF sy-subrc <> 0.
 MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.

*--更改分隔符 为tab键
LOOP AT lt_title ASSIGNING <fs> .
      REPLACE ALL OCCURRENCES OF ';' IN <fs> WITH c_tab.
 ENDLOOP.

*----下载模板
  CALL METHOD cl_gui_frontend_services=>gui_download
              EXPORTING
*                 bin_filesize            =
                filename                = w_filename
**                filetype                = 'DAT'
*                 codepage                = '8404'
*                 ignore_cerr             = ABAP_TRUE
*                 replacement             = '#'
              CHANGING
                data_tab                = lt_title[]
              EXCEPTIONS
                file_write_error        = 1
                no_batch                = 2
                gui_refuse_filetransfer = 3
                invalid_type            = 4
                no_authority            = 5
                unknown_error           = 6
                header_not_allowed      = 7
                separator_not_allowed   = 8
                filesize_not_allowed    = 9
                header_too_long         = 10
                dp_error_create         = 11
                dp_error_send           = 12
                dp_error_write          = 13
                unknown_dp_error        = 14
                access_denied           = 15
                dp_out_of_memory        = 16
                disk_full               = 17
                dp_timeout              = 18
                file_not_found          = 19
                dataprovider_exception  = 20
                control_flush_error     = 21
                not_supported_by_gui    = 22
                error_no_gui            = 23
                OTHERS                  = 24.

  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
    WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.