只要在ALV输出的参考结构里面把字段的属性DECIMALS_OUT 设置为0即可。
FORM FRM_CATLG_SET USING P_FIELD P_TEXT P_KEY.
DATA: LS_FIELDCAT TYPE SLIS_FIELDCAT_ALV.
LS_FIELDCAT-FIELDNAME = P_FIELD.
LS_FIELDCAT-SELTEXT_L = P_TEXT.
LS_FIELDCAT-KEY = P_KEY.
LS_FIELDCAT-NO_ZERO = 'X'.
IF P_FIELD = 'LINE_SUM'.
LS_FIELDCAT-DECIMALS_OUT = '0'. "去掉小数点后边0
ENDIF.
APPEND LS_FIELDCAT TO GD_FIELDCAT .
CLEAR LS_FIELDCAT .
ENDFORM.