se37 函数中的异常使用

一种是rase <exceptions>

FUNCTION ztest.
*"----------------------------------------------------------------------
*"*"Local interface:
*"  IMPORTING
*"     VALUE(NOB) TYPE  I OPTIONAL
*"  EXPORTING
*"     VALUE(NAME) TYPE  CHAR10
*"  EXCEPTIONS
*"      DEV_ZERO
*"----------------------------------------------------------------------
IF nob <> .
name = '张三'.
ELSE.
RAISE dev_zero .
ENDIF.
ENDFUNCTION.

程序中调用：在程序里自己处理异常

REPORT  ZTEST_FC.

DATA : lv  TYPE i,
      lc TYPE char10.
lv = .

CALL FUNCTION 'ZTEST'
 EXPORTING
   NOB            = LV
 IMPORTING
   NAME           = LC
 EXCEPTIONS
   DEV_ZERO       =
   OTHERS         =
          .
IF sy-subrc = .
 MESSAGE '我在处理异常DEV_ZERO' TYPE 'E'.
ENDIF.

另一种是不需要在程序中处理，自己要在函数中写好处理异常。message type rasing <exceptions>

FUNCTION ztest.
*"----------------------------------------------------------------------
*"*"Local interface:
*"  IMPORTING
*"     VALUE(NOB) TYPE  I OPTIONAL
*"  EXPORTING
*"     VALUE(NAME) TYPE  CHAR10
*"  EXCEPTIONS
*"      DEV_ZERO
*"----------------------------------------------------------------------
IF nob <> .
name = '张三'.
ELSE.
  MESSAGE '处理异常' TYPE 'E' RAISING dev_zero .
ENDIF.

ENDFUNCTION.

REPORT  ZTEST_FC.

DATA : lv  TYPE i,
      lc TYPE char10.
lv = .

CALL FUNCTION 'ZTEST'
 EXPORTING
   NOB            = LV
 IMPORTING
   NAME           = LC
 EXCEPTIONS
   DEV_ZERO       =
   OTHERS         =
          .
IF sy-subrc <> .
 MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO    "函数ZTEST 里面的处理消息 赋在SY-MSGID SY-MSGTY SY-MSGNO
         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.

ENDIF.