摘要：
screen 读取文件F4 功能 方式1.ATSELECTION-SCREENONVALUE-REQUESTFORp_file.PERFORMsub_file_pathUSINGp_file.ATSELECTION-SCREEN.IFp_fileisinitial.MESSAGE'请指定文件路径'type'E'.ENDIF.v_len1=STRLEN(p_file).v_len2=v_len1-3.IFp_file+v_len2<>'XLS'ANDp_file+v_len2<>'xls'.MESSAGE&# 阅读全文