1 定义内表data: gt_data type alsmex_tabline occurs 0 with header line.2 定义文件参数parameters: p_file like rlgrap-filename. 3定义文件帮助at selection-screen on value-request for p_file. perform select_file. form select_file . call function 'WS_FILENAME_GET' exporting mask = ',Excel Files,*.xls,All Files,*.*.'(101) title = '选择文件'(100) importing filename = p_file exceptions inv_winsys = 1 no_batch = 2 selection_cancel = 3