ABAP：从例子学习ABAP

1、插入内表行:

*插入内表行:

DATA: BEGIN OF man,

      name(20) TYPE c,

      high TYPE p DECIMALS 2,

      weight TYPE p DECIMALS 2,

END OF man.

DATA: man1 LIKE TABLE OF man.

man-name =  '张参'.

man-high = '1.68'.

man-weight = 120.

INSERT man INTO TABLE man1.

man-name = '刘志'.

man-high = '1.78'.

man-weight = 160.

INSERT man INTO TABLE man1.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

ULINE.

man-name =  '钱华'.

man-high = '2.22'.

man-weight = 220.

INSERT man INTO man1 INDEX 3.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

ULINE.

man-name =  '钱华'.

man-high = '2.22'.

man-weight = 220.

INSERT man INTO man1 INDEX 1.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

2、读取文件

2.1、使用upload函数

*读放文件

DATA: BEGIN OF man,

      name(20) TYPE c,

      high TYPE p DECIMALS 2,

      weight TYPE p DECIMALS 2,

END OF man.

DATA: man1 LIKE TABLE OF man.

CALL FUNCTION 'UPLOAD'

  EXPORTING

    codepage                = 'test'

    filename                = 'd:\temp\testa.txt'

    filetype                = 'dat'

    item                    = '读取文件'

  TABLES

    data_tab                = man1

  EXCEPTIONS

    invalid_filesize        = 1

    invalid_table_width     = 2

    invalid_type            = 3

    no_batch                = 4

    unknown_error           = 5

    gui_refuse_filetransfer = 6

    OTHERS                  = 7.

IF sy-subrc <> 0.

* message id sy-msgid type sy-msgty number sy-msgno

* with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

2.2、使用WS_UPLOAD函数

*读取文件

DATA: BEGIN OF man,

      name() TYPE c,

      high     TYPE p DECIMALS ,

      weight   TYPE p DECIMALS ,

END OF man.

DATA: man1 LIKE TABLE OF man.

CALL FUNCTION 'WS_UPLOAD'

  EXPORTING

    codepage                = 'test'

    filename                = 'd:\temp\testa.txt'

    filetype                = 'DAT'

  TABLES

    data_tab                = man1

  EXCEPTIONS

    invalid_filesize        =

    invalid_table_width     =

    invalid_type            =

    no_batch                =

    unknown_error           =

    gui_refuse_filetransfer =

    OTHERS                  = .

IF sy-subrc <> .

* message id sy-msgid type sy-msgty number sy-msgno

* with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

2.3、使用GUI_UPLOAD函数

*直接读取文件

DATA: BEGIN OF man,

      name() TYPE c,

      high     TYPE p DECIMALS ,

      weight   TYPE p DECIMALS ,

END OF man.

DATA: man1 LIKE TABLE OF man.

CALL FUNCTION 'GUI_UPLOAD'

  EXPORTING

    filename                      = 'd:\temp\testa.txt'

   FILETYPE                      = 'DAT'

*   HAS_FIELD_SEPARATOR           = ' '

*   HEADER_LENGTH                 = 0

*   READ_BY_LINE                  = 'X'

*   DAT_MODE                      = ' '

*   CODEPAGE                      = ' '

*   IGNORE_CERR                   = ABAP_TRUE

*   REPLACEMENT                   = '#'

*   CHECK_BOM                     = ' '

*   VIRUS_SCAN_PROFILE            =

*   NO_AUTH_CHECK                 = ' '

* IMPORTING

*   FILELENGTH                    =

*   HEADER                        =

  tables

    data_tab                      = man1

* CHANGING

*   ISSCANPERFORMED               = ' '

* EXCEPTIONS

*   FILE_OPEN_ERROR               = 1

*   FILE_READ_ERROR               = 2

*   NO_BATCH                      = 3

*   GUI_REFUSE_FILETRANSFER       = 4

*   INVALID_TYPE                  = 5

*   NO_AUTHORITY                  = 6

*   UNKNOWN_ERROR                 = 7

*   BAD_DATA_FORMAT               = 8

*   HEADER_NOT_ALLOWED            = 9

*   SEPARATOR_NOT_ALLOWED         = 10

*   HEADER_TOO_LONG               = 11

*   UNKNOWN_DP_ERROR              = 12

*   ACCESS_DENIED                 = 13

*   DP_OUT_OF_MEMORY              = 14

*   DISK_FULL                     = 15

*   DP_TIMEOUT                    = 16

*   OTHERS                        = 17

          .

IF sy-subrc <> .

* Implement suitable error handling here

ENDIF.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

2.4、读取文件小例子

DATA file_table TYPE file_table. "引用FILE_TABLE对象

DATA: lt_file_names TYPE filetable,

lwa_file_name LIKE LINE OF lt_file_names,

lv_subrc TYPE i.

SELECT-OPTIONS: i_file FOR file_table NO INTERVALS.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR i_file-low.

CALL METHOD cl_gui_frontend_services=>file_open_dialog

EXPORTING

*    WINDOW_TITLE            =

*    DEFAULT_EXTENSION     =

*    DEFAULT_FILENAME        =

*    FILE_FILTER             =

initial_directory       = 'd:\temp'

multiselection          = 'X'

CHANGING

  file_table                      = lt_file_names[]

  rc                                 = lv_subrc  "打开文件的数量

*    USER_ACTION             =

EXCEPTIONS

  file_open_dialog_failed =

  cntl_error                        =

  error_no_gui                    =

OTHERS                                 = .

IF sy-subrc <> .

  MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno

    WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

i_file-sign = 'I'.

i_file-option = 'EQ'.

LOOP AT lt_file_names INTO lwa_file_name.

  i_file-low = lwa_file_name.

  APPEND i_file.

ENDLOOP.

START-OF-SELECTION.

  WRITE:'打开文件的数量：',lv_subrc LEFT-JUSTIFIED.

  WRITE: / '打开文件的数量：',LINES( i_file ) LEFT-JUSTIFIED.

LOOP AT i_file.

 WRITE: / i_file-low.

ENDLOOP.

3、保存文件

*保存文件

DATA: BEGIN OF man,

      name(20) TYPE c,

      high TYPE p DECIMALS 2,

      weight TYPE p DECIMALS 2,

END OF man.

DATA: man1 LIKE TABLE OF man.

DATA: name TYPE rlgrap-filename, typa TYPE rlgrap-filetype.

man-name =  '张参'.

man-high = '1.68'.

man-weight = 120.

INSERT man INTO TABLE man1.

man-name = '刘志'.

man-high = '1.78'.

man-weight = 160.

INSERT man INTO TABLE man1.

man-name =  '钱华'.

man-high = '2.22'.

man-weight = 220.

INSERT man INTO man1 INDEX 2.

name = 'd:\temp\testad.txt'.

typa = 'dat'.

CALL FUNCTION 'DOWNLOAD'

  EXPORTING

    codepage                = 'testa'

    filename                = name

    filetype                = typa

    item                    = '文件测试'

  TABLES

    data_tab                = man1

  EXCEPTIONS

    invalid_filesize        = 1

    invalid_table_width     = 2

    invalid_type            = 3

    no_batch                = 4

    unknown_error           = 5

    gui_refuse_filetransfer

    =6

    OTHERS                  = 7.

IF

sy-subrc <> 0.

* message id sy-msgid type sy-msgty number sy-msgno

* with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.

ENDIF.

4、格式化输出

DATA wa LIKE spfli.

WRITE:/.

WRITE:10'航班承运人',40'航班连接',60'国家代码',80'起飞城市',100'起飞机场'.

5、内表排序

*内表排序

DATA: BEGIN OF man,

      name(20) TYPE c,

      high TYPE p DECIMALS 2,

      weight TYPE p DECIMALS 2,

END OF man.

DATA: man1 LIKE hashed TABLE OF man with unique key name.

man-name =  '张参'.

man-high = '1.68'.

man-weight = 120.

INSERT man INTO TABLE man1.

man-name = '刘志'.

man-high = '1.78'.

man-weight = 160.

INSERT man INTO TABLE man1.

man-name =  '钱华'.

man-high = '2.22'.

man-weight = 220.

INSERT man INTO table man1.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

ULINE.

sort man1 ascending by weight descending .

skip.

uline.

LOOP AT man1 INTO man.

  WRITE: / man-name,man-high,man-weight.

ENDLOOP.

6、消息

*消息

*--开始

*DATA: msg1(20) TYPE c VALUE '测试'.

*DATA: msg2(20) TYPE c VALUE 'ABAP'.

*DATA: msg3(20) TYPE c VALUE '消息！'.

*

*MESSAGE i006(ymess) WITH msg1 msg2 msg3.

*

*data:BEGIN OF man,

*     name(30) TYPE c,

*     high TYPE p DECIMALS 2,

*     weight TYPE p DECIMALS 2,

*END OF man.

*

*FIELD-SYMBOLS <fsa> LIKE man.

*DATA man1 LIKE man.

*

*man-name = '雨荷'.

*man-high = '1.78'.

*man-weight = 140.

*

*ASSIGN man TO <fsa>.

*WRITE:/ <fsa>-name,

*    man-high,

*<fsa>-weight.

*--结束

*--开始

*DATA: msg1(20) TYPE c VALUE '测试'.

*DATA: msg2(20) TYPE c VALUE 'ABAP'.

*DATA: msg3(20) TYPE c VALUE '消息！'.

*

*MESSAGE i001(00) WITH msg1 msg2 msg3.

*

*

*DATA: c1(2) TYPE c,

*      c2(2) TYPE c,

*      c3(2) TYPE c,

*      c4(2) TYPE c,

*      c5(20) TYPE c VALUE '91* 12*23*344445',

*      c9(2) TYPE c.

*

*c9 = '* '.

*WRITE: / .

*WRITE c5.

*SPLIT c5 AT c9 INTO c1 c2 c3 c4 .

*WRITE: / c1,c2,c3,c4.

*--结束

*--开始

*DATA: msg1(20) TYPE c VALUE '测试'.

*DATA: msg2(20) TYPE c VALUE 'ABAP'.

*DATA: msg3(20) TYPE c VALUE '消息！'.

*

*MESSAGE i001(00) WITH msg1 msg2 msg3.

*

*

*DATA: BEGIN OF man,

*      name(20) TYPE c,

*      high TYPE p DECIMALS 2,

*      weight TYPE p DECIMALS 2,

*END OF man.

*

*DATA: man1 LIKE TABLE OF man WITH HEADER LINE,

*man2 LIKE TABLE OF man.

*

*man-name =  '张参'.

*man-high = '1.68'.

*man-weight = 120.

*APPEND man TO man1.

*

*man-name = '刘志'.

*man-high = '1.78'.

*man-weight = 160.

*APPEND man TO man1.

*

*MOVE man1[] TO man2.

*

*

*  WRITE: / man-name,man-high,man-weight.

*

*

*LOOP AT man1.

*write: / man1-name,man1-high,man1-weight.

*ENDLOOP.

*--结束

7、读取数据表

**读取数据表

*定义工作区

DATA a_spfli TYPE spfli.

*定义内表，请注意有Header line

DATA ta_spfli TYPE TABLE OF spfli WITH HEADER LINE.

*分隔线

ULINE.

WRITE / '使用工作区'.

ULINE.

* 将数据表逐行转移至工作区，只读前5行

SELECT * INTO CORRESPONDING FIELDS OF

         a_spfli FROM spfli UP TO  ROWS.

  WRITE: / a_spfli-connid,a_spfli-carrid,a_spfli-cityfrom,

          a_spfli-cityto.

ENDSELECT.

ULINE.

WRITE / '使用内表'.

ULINE.

SELECT * INTO CORRESPONDING FIELDS OF

         TABLE ta_spfli FROM spfli UP TO  ROWS.

*从数据表读数据至内表，直接从内表输出

*如果TA_SPFLI没有定义Header line，会出错

LOOP AT ta_spfli.

  WRITE: / a_spfli-connid,a_spfli-carrid,a_spfli-cityfrom,

           a_spfli-cityto.

ENDLOOP.

ULINE.

WRITE / '将内表数据转移至工作区'.

ULINE.

LOOP AT ta_spfli INTO a_spfli.

  WRITE: / a_spfli-connid,a_spfli-carrid,a_spfli-cityfrom,

             a_spfli-cityto.

ENDLOOP.

8、内连接和外连接

*内连接和外连接

*定义结构

DATA: BEGIN  OF   arcd,

      carrid TYPE spfli-carrid,

      connid TYPE spfli-connid,

      fldate TYPE sflight-fldate,

      END OF arcd.

*工作区

DATA arcd1 LIKE arcd.

*关联数据表，读取前10条记录，写入工作区，并输出

SELECT spfli~carrid spfli~connid sflight~fldate INTO arcd1 FROM spfli

       INNER JOIN sflight ON spfli~carrid = sflight~carrid

       AND spfli~connid = sflight~connid UP TO  ROWS.

  WRITE: / arcd1-carrid,arcd1-connid,arcd1-fldate.

ENDSELECT.

9、使用package size 读取数据

**使用package size 读取数据

*定义内表，请注意有Header line

DATA wa_spfli TYPE TABLE OF spfli WITH HEADER LINE.

*分隔线

ULINE.

* 以每次读取5条记录，直到读取所有数据

SELECT * INTO TABLE wa_spfli FROM spfli PACKAGE SIZE .

*输出内表记录

  LOOP AT wa_spfli.

    WRITE: / wa_spfli-connid,wa_spfli-carrid,wa_spfli-cityfrom,

             wa_spfli-cityto.

  ENDLOOP.

*输出5条记录后输出一条横线

  ULINE.

ENDSELECT.

10、交互式列表

**交互式列表

START-OF-SELECTION.

  WRITE:'初如列表,sy-lsind = ' ,sy-lsind.

AT LINE-SELECTION.

  IF sy-lsind = .

    WRITE: '第二列表,sy-lsind =',sy-lsind.

  ENDIF.

AT LINE-SELECTION.

  IF sy-lsind = .

    WRITE: '第三列表,sy-lsind =',sy-lsind.

  ENDIF.

11、列表颜色

**列表颜色

*数据库表spfli相关

TABLES spfli.

SKIP.

*输出表头，背景灰蓝

FORMAT COLOR COL_HEADING.

ULINE AT /().

WRITE: / sy-vline,() '航线承运人', sy-vline , () '航班连接', sy-vline,

       () '国家代码', sy-vline,() '起飞城市', sy-vline,

       () '起飞机场',sy-vline.

ULINE AT /().

FORMAT COLOR OFF.

*输出内容,输出关键值为‘LH’为红色

SELECT * FROM spfli.

  IF spfli-carrid = 'LH'.

    FORMAT COLOR COL_NEGATIVE.

  ELSE.

    FORMAT COLOR OFF.

  ENDIF.

  WRITE: / sy-vline,() spfli-carrid,sy-vline,() spfli-connid,sy-vline,

         () spfli-countryto, sy-vline,() spfli-cityfrom,sy-vline,()

         spfli-airpfrom,sy-vline.

  ULINE AT /().

ENDSELECT.

12、输出热点

**输出热点

start-of-selection.

  write '请按'.

  format hotspot on color  inverse on.

  write '热点'.

  format hotspot off color off.

at line-selection.

  write 'welcome!'.

13、为列表定义工具条和菜单

*为列表定义工具条和菜单

START-OF-SELECTION.

* 设置已使用的状态条

  SET PF-STATUS 'STA1'.

  WRITE:'测试工具条按钮 '.

AT USER-COMMAND.

*当单击按钮时输出

  CASE sy-ucomm.

    WHEN '&NFO'.

      WRITE: '已选择!'.

    WHEN 'E'.

      leave to screen .

    when others.

      WRITE ''.

  ENDCASE.

14、在弹出式窗口中显示列表

*在弹出式窗口中显示列表

START-OF-SELECTION.

* 设置已使用的状态条

  SET PF-STATUS 'STA1'.

  WRITE:'测试工具条按钮 '.

AT USER-COMMAND.

*当单击按钮时输出

  CASE sy-ucomm.

    WHEN '&NFO'.

      WRITE: '已选择!'.

    WHEN 'E'.

      leave to screen .

    when others.

        IF sy-lsind = .

        SET PF-STATUS 'STA1'.

*定义子窗口并输出

        WINDOW STARTING AT   ENDING AT  .

        WRITE '在子窗口输出!'.

        WRITE: '请注意!'.

      ENDIF.

  ENDCASE.

15、隐藏字段技术

**隐藏字段技术

*数据库表spfli相关

TABLES: spfli, sflight.

START-OF-SELECTION.

  SKIP.

*输出

  ULINE AT /().

  WRITE: / sy-vline,() '航线承运人', sy-vline , () '航班连接', sy-vline,

         () '国家代码', sy-vline,() '起飞城市', sy-vline,

         () '起飞机场',sy-vline.

  ULINE AT /().

*输出

  SELECT * FROM spfli

*    WHERE carrid = 'UA' AND connid = 3504

    .

    WRITE: / sy-vline,() spfli-carrid,sy-vline,

                      () spfli-connid,sy-vline,

                      () spfli-countryto,sy-vline,

                      () spfli-cityfrom,sy-vline,

                      () spfli-airpfrom, sy-vline.

*隐藏关键字

    HIDE: spfli-carrid,spfli-connid.

    ULINE AT /().

  ENDSELECT.

AT LINE-SELECTION.

*只输出第一页

  IF sy-lsind = .

    write : / 'spfli-carrid：',spfli-carrid.

    write : / 'spfli-connid：',spfli-connid.

    ULINE AT /().

    WRITE: / sy-vline,() '航线承运人', sy-vline , () '航班连接', sy-vline,

         () '国家代码', sy-vline,() '起飞城市', sy-vline,

         () '起飞机场',sy-vline.

    ULINE AT /().

*根据隐藏字段读取并打印从表

    SELECT * FROM sflight

      WHERE carrid = spfli-carrid AND connid = spfli-connid

      .

      WRITE: / sy-vline,() spfli-carrid,sy-vline,

                      () spfli-connid,sy-vline,

                      () spfli-countryto,sy-vline,

                      () spfli-cityfrom,sy-vline,

                      () spfli-airpfrom, sy-vline.

      ULINE AT /().

    ENDSELECT.

  ENDIF.

16、使用hide技术从列表读取行

**使用hide技术从列表读取行

*数据库表spfli相关

TABLES: spfli.

DATA: sela() TYPE c,

      num    TYPE i VALUE .

START-OF-SELECTION.

  SKIP.

*输出

  ULINE AT /().

  WRITE: / sy-vline,'',sy-vline,() '航线承运人', sy-vline , ()

           '航班连接', sy-vline,() '国家代码', sy-vline,()

           '起飞城市', sy-vline,() '起飞机场',sy-vline.

  ULINE AT /().

*输出

  SELECT * FROM spfli.

    WRITE: / sy-vline,sela AS CHECKBOX,sy-vline,() spfli-carrid,

             sy-vline,() spfli-connid,sy-vline,() spfli-countryto,

             sy-vline,() spfli-cityfrom,sy-vline,

                      () spfli-airpfrom,sy-vline.

* 隐藏关键字

    HIDE: spfli-carrid,spfli-connid,spfli-countryto,

          spfli-cityfrom,spfli-airpfrom.

    ULINE AT /().

* 隐藏选择框，使表格行不会选择

    HIDE sela.

    num = num + .

  ENDSELECT.

END-OF-SELECTION.

*  num1 = sy-lsind - 1.

AT LINE-SELECTION.

  WRITE :  'sy-lsind:',sy-lsind.

   WRITE :  'num:',num.

*只输出第一页

  IF sy-lsind = .

    DO num TIMES.

* 读取行

      READ LINE sy-index FIELD VALUE sela.

* 如果checked,输出隐含字段

      IF sela = 'X'.

        WRITE: / spfli-carrid,spfli-connid,spfli-countryto,

                 spfli-cityfrom,spfli-airpfrom.

      ENDIF.

    ENDDO.

  ENDIF.

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