sap上传文件

1. sap 上传文件怎么安tab分割读取

CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
filename = u_file "" 上传的文件路径
filetype = 'ASC' "" .txt 格式
has_field_separator = 'X' "" tab 分割标示
TABLES
data_tab = <dyn_table> "" 自己定义的内表
EXCEPTIONS
file_open_error = 1
file_read_error = 2
no_batch = 3
gui_refuse_filetransfer = 4
invalid_type = 5
no_authority = 6
unknown_error = 7
bad_data_format = 8
header_not_allowed = 9
separator_not_allowed = 10
header_too_long = 11
unknown_dp_error = 12
access_denied = 13
dp_out_of_memory = 14
disk_full = 15
dp_timeout = 16
OTHERS = 17.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.