大概步骤分为以下几步：

• 首先将打印的凭证以pdf格式存到sap文件服务器AL11
• 连接FTP
• 编写FTP命令从AL11中去下载对饮文件
• 关闭连接
  • gt_otf为打印产生的结果表
  • 以二进制的形式存到AL11
  • filename1为AL11路径和文件名

    CALL FUNCTION 'CONVERT_OTF'
      EXPORTING
        format                = 'PDF'
        max_linewidth         = 132
      IMPORTING
        bin_filesize          = w_bin_filesize
      TABLES
        otf                   = gt_otf
        lines                 = tline[]
      EXCEPTIONS
        err_max_linewidth     = 1
        err_format            = 2
        err_conv_not_possible = 3
        err_bad_otf           = 4
        OTHERS                = 5.
    IF sy-subrc <> 0.
*   MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
*    WITHsy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    ENDIF.
    i_pdf[] = tline[].
  ENDIF.


  CONCATENATE '/usr/sap/trans/' filename INTO filename1.
  OPEN DATASET filename1 FOR OUTPUT IN BINARY MODE.
  IF sy-subrc = 0.
    LOOP AT i_pdf.
      TRANSFER i_pdf TO filename1.
    ENDLOOP.
  ENDIF.

  CLOSE DATASET filename1.
* get ftp command
  CLEAR t_ftpcomm[].
  t_ftpcomm-ftpcomm = 'prompt'.
  APPEND t_ftpcomm. CLEAR t_ftpcomm.
  t_ftpcomm-ftpcomm = 'bi'.
  APPEND t_ftpcomm. CLEAR t_ftpcomm.


* 进入指定文件夹/XX/YYYY/MM/YYYYMMDD/ ，如果没有文件夹则创建
  PERFORM frm_goto_folder USING uv_fold CHANGING t_ftpcomm[].


  CONCATENATE 'lcd' '/usr/sap/trans/' INTO t_ftpcomm-ftpcomm
  SEPARATED BY space.
  MOVE t_ftpcomm-ftpcomm TO f_str.
  SHIFT f_str RIGHT DELETING TRAILING '/'.
  CONDENSE f_str.
  MOVE f_str TO t_ftpcomm-ftpcomm.
  APPEND t_ftpcomm. CLEAR t_ftpcomm.

  CONCATENATE '"' filename '"' INTO filename.
  CONCATENATE 'dele' filename INTO t_ftpcomm-ftpcomm SEPARATED BY space.  APPEND t_ftpcomm. CLEAR t_ftpcomm.
  CONCATENATE 'put' filename INTO t_ftpcomm-ftpcomm SEPARATED BY space.  APPEND t_ftpcomm. CLEAR t_ftpcomm.
* end ftp command
* ftp connect
  SET EXTENDED CHECK OFF.
  slen = strlen( f_pwd ).

  CALL FUNCTION 'HTTP_SCRAMBLE'
    EXPORTING
      source      = f_pwd
      sourcelen   = slen
      key         = key
    IMPORTING
      destination = f_pwd1.
  CALL FUNCTION 'FTP_CONNECT'
    EXPORTING
      user            = f_user
      password        = f_pwd1
      host            = f_host
      rfc_destination = f_dest
    IMPORTING
      handle          = hdl.
  IF sy-subrc NE 0.
    RAISE connect_ftp_error.
  ENDIF.

* exec ftp command
  CLEAR ftp_result1[].
  LOOP AT t_ftpcomm.
    CALL FUNCTION 'FTP_COMMAND'
      EXPORTING
        handle        = hdl
        command       = t_ftpcomm-ftpcomm
        compress      = compress
      TABLES
        data          = ftp_result1
      EXCEPTIONS
        command_error = 1
        tcpip_error   = 2.
  ENDLOOP.
  CALL FUNCTION 'FTP_DISCONNECT'
    EXPORTING
      handle = hdl.

  CALL FUNCTION 'RFC_CONNECTION_CLOSE'
    EXPORTING
      destination = 'SAPFTPA'
    EXCEPTIONS
      OTHERS      = 1.
* unix command
  REFRESH result.
  DELETE DATASET filename1.

FTP创建文件夹

**end   add by caijh on 20211214
*&---------------------------------------------------------------------*
*&      Form  FRM_GOTO_FOLDER
*&---------------------------------------------------------------------*
*       进入夹/XX/YYYY/MM/YYYYMMDD/ ，如果没有文件夹则创建，年月日格式。
*----------------------------------------------------------------------*
FORM frm_goto_folder  USING    uv_foldername
                      CHANGING t_ftpcomm TYPE  ty_tab_cmd.


  DATA lwa_cmd TYPE ty_cmd.
  DATA lv_tmp_str TYPE string.
  DATA lv_filenum TYPE string.
  DATA lv_filesecond TYPE string.


  IF uv_foldername <> 'FIVOUCHER'.

    SPLIT uv_foldername AT '&' INTO uv_foldername lv_filesecond lv_filenum.
  ELSE.
    SPLIT uv_foldername AT '&' INTO uv_foldername lv_filenum.
  ENDIF.




  CONCATENATE 'CWD /'    ``  INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
  CONCATENATE 'mkdir '    uv_foldername   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
  CONCATENATE 'TYPE A'    ``  INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
  CONCATENATE 'cd'  uv_foldername INTO lwa_cmd-ftpcomm  SEPARATED BY space.
  APPEND lwa_cmd TO t_ftpcomm.

  IF  uv_foldername <> 'FIVOUCHER' .
    CONCATENATE  'mkdir '   lv_filesecond   `/`  INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
    CONCATENATE   `/` uv_foldername  `/`  lv_filesecond  `/`  INTO lv_tmp_str.
    CONCATENATE 'cd' lv_tmp_str   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
    CONCATENATE uv_foldername '/' lv_filesecond INTO uv_foldername.
  ENDIF.


  CONCATENATE 'mkdir ' sy-datum+0(4)  `/` INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

  CONCATENATE   `/` uv_foldername  `/`  sy-datum+0(4)  `/`  INTO lv_tmp_str.

  CONCATENATE 'cd' lv_tmp_str   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

  CONCATENATE 'mkdir ' sy-datum+4(2)  INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

  CONCATENATE  `/` uv_foldername `/`   sy-datum+0(4)  `/`  sy-datum+4(2)  INTO lv_tmp_str.
  CONCATENATE 'cd' lv_tmp_str   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

*  IF uv_foldername = 'FIVOUCHER' OR uv_foldername = 'CHECKVOUCHER'.
  CONCATENATE 'mkdir ' sy-datum+6(2)   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

  CONCATENATE  `/` uv_foldername `/`  sy-datum+0(4)  `/`  sy-datum+4(2)  `/`  sy-datum+6(2)   INTO lv_tmp_str.
  CONCATENATE 'cd' lv_tmp_str INTO lwa_cmd-ftpcomm SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.
*  ENDIF.
  CONCATENATE 'mkdir ' lv_filenum   INTO lwa_cmd-ftpcomm  SEPARATED BY space.  APPEND lwa_cmd TO t_ftpcomm.

*  IF uv_foldername = 'FIVOUCHER' OR uv_foldername = 'CHECKVOUCHER'. .
  CONCATENATE  `/` uv_foldername `/`  sy-datum+0(4)  `/`  sy-datum+4(2)  `/`  sy-datum+6(2)  `/`  lv_filenum   INTO lv_tmp_str.
*  ELSE.
*    CONCATENATE  `/` uv_foldername `/`  sy-datum+0(4)  `/`  sy-datum+4(2)  `/`  lv_filenum   INTO lv_tmp_str.
*  ENDIF.

  CONCATENATE 'cd' lv_tmp_str INTO lwa_cmd-ftpcomm SEPARATED BY space. APPEND lwa_cmd TO t_ftpcomm.


ENDFORM.