SAP ABAP Exception handleing异常处理及使用

1、捕获异常try.      RESULT =  1 / NUMBER.      write: / 'Result of division:', RESULT.      RESULT = SQRT( NUMBER ).      write: / 'Result of square root:', RESULT.catch CX_SY_ZERODIVIDE into OREF.        TEXT = OREF->GET_TEXT( ).cleanup.        clear RESULT.endtry.2、抛出异常report  DEMO_RAISE_EXCEPTIONS line-size 100.data OREF type ref to CX_ROOT.data TEXT type STRING.try.  try.    raise exception type CX_DEMO_CONSTRUCTOR          exporting MY_TEXT = SY-REPID.    catch CX_DEMO_CONSTRUCTOR into OREF.      TEXT = OREF->GET_TEXT( ).      write / TEXT.      raise exception OREF.  endtry.  catch CX_DEMO_CONSTRUCTOR into OREF.    TEXT = OREF->GET_TEXT( ).    write / TEXT.endtry.3、声明方法抛出的异常class A_CLASS definition.  public section.    methods FOO importing P type STRING                 raising CX_DEMO_CONSTRUCTOR CX_DEMO_ABS_TOO_LARGE.endclass.4、定义异常类class CX_LOCAL_EXCEPTION definition                         inheriting from CX_STATIC_CHECK.endclass.start-of-selection.  try.      raise exception type CX_LOCAL_EXCEPTION.    catch CX_LOCAL_EXCEPTION.      message 'Local Exception!' type 'I'.  endtry.