ABAP-内表转换XML

REPORT  Y_XB_TEST10.

*&---------------------------------------------------------------------*
*&声明及定义部分
*&---------------------------------------------------------------------*

TYPE-POOLS: IXML.

****声明存放ＸＭＬ文件的结构
TYPES:BEGIN OF XML_LINE,
        DATA(256) TYPE X,
      END OF XML_LINE.

****声明对象
DATA: L_IXML          TYPE REF TO IF_IXML,
      L_STREAMFACTORY TYPE REF TO IF_IXML_STREAM_FACTORY,
      L_OSTREAM       TYPE REF TO IF_IXML_OSTREAM,
      L_RENDERER      TYPE REF TO IF_IXML_RENDERER,
      L_DOCUMENT      TYPE REF TO IF_IXML_DOCUMENT.

****声明ＸＭＬ元素
DATA:L_ELEMENT_INPOT    TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_CARRID   TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_CONNID   TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_CITYFROM TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_AIRPFROM TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_CITYTO   TYPE REF TO IF_IXML_ELEMENT,
     L_ELEMENT_AIRPTO   TYPE REF TO IF_IXML_ELEMENT,
     L_VALUE            TYPE STRING.

****声明存放ＸＭＬ文件的内表以及字节数
DATA: L_XML_TABLE TYPE TABLE OF XML_LINE,
      L_XML_SIZE  TYPE I,
      L_RC        TYPE I,
      FLAG        TYPE STRING.

****声明数据内表
DATA:BEGIN OF I_DATA OCCURS 0,
       CARRID   TYPE SPFLI-CARRID,    "航线代码
       CONNID   TYPE SPFLI-CONNID,    "航班连接编号
       CITYFROM TYPE SPFLI-CITYFROM,  "起飞城市
       AIRPFROM TYPE SPFLI-AIRPFROM,  "始发机场
       CITYTO   TYPE SPFLI-CITYTO,    "到达城市
       AIRPTO   TYPE SPFLI-AIRPTO,    "目标机场
     END OF I_DATA.

*&---------------------------------------------------------------------*
*& 主逻辑部分
*&---------------------------------------------------------------------*

START-OF-SELECTION.
  PERFORM ZFORM_GET_DATA.
  PERFORM ZFORM_SAVE_XML.


*&---------------------------------------------------------------------*
*& FORM定义部分
*&---------------------------------------------------------------------*
*&---------------------------------------------------------------------*
*&      Form  zform_get_data
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
FORM ZFORM_GET_DATA.
  SELECT CARRID
         CONNID
         CITYFROM
         AIRPFROM
         CITYTO
         AIRPTO
    INTO TABLE I_DATA
         FROM SPFLI
    UP TO 10 ROWS.
ENDFORM.                    "zform_get_data

*&---------------------------------------------------------------------*
*&      Form  save_xml
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
FORM ZFORM_SAVE_XML.
  LOOP AT I_DATA.
****创建一个ＸＭＬ容器
    AT FIRST.
      L_IXML = CL_IXML=>CREATE( ).
****创建一个文档对象模型
      L_DOCUMENT = L_IXML->CREATE_DOCUMENT( ).
****填充根节点
      L_ELEMENT_INPOT = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                        NAME = 'INPOT'
                        PARENT = L_DOCUMENT ).
    ENDAT.
    AT NEW CARRID.
****填充子节点(航线代码)
      L_VALUE = I_DATA-CARRID.
      L_ELEMENT_CARRID = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                        NAME = 'CARRID'
                        VALUE = L_VALUE
                        PARENT = L_ELEMENT_INPOT ).
      FLAG = FLAG + 1.
      L_RC = L_ELEMENT_CARRID->SET_ATTRIBUTE( NAME = 'ID' VALUE =
             FLAG ).
    ENDAT.
*****填充子节点(航班连接编号)
    AT NEW CONNID.
      L_VALUE = I_DATA-CONNID.
      L_ELEMENT_CONNID = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                           NAME = 'PRUEFLOS'
                           VALUE = L_VALUE
                           PARENT = L_ELEMENT_CARRID ).
    ENDAT.
*****填充子节点(细节)
    L_VALUE = I_DATA-CITYFROM. "起飞城市
    L_ELEMENT_CITYFROM = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                          NAME = 'CITYFROM'
                          VALUE = L_VALUE
                          PARENT = L_ELEMENT_CONNID ).
    L_VALUE = I_DATA-AIRPFROM.  "始发机场
    L_ELEMENT_AIRPFROM = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                          NAME = 'AIRPFROM'
                          VALUE = L_VALUE
                          PARENT = L_ELEMENT_CONNID ).
    L_VALUE = I_DATA-CITYTO.    "到达城市
    L_ELEMENT_CITYTO = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                          NAME = 'CITYTO'
                          VALUE = L_VALUE
                          PARENT = L_ELEMENT_CONNID ).
    L_VALUE = I_DATA-AIRPTO.    "始发机场
    L_ELEMENT_AIRPTO = L_DOCUMENT->CREATE_SIMPLE_ELEMENT(
                          NAME = '目标机场'
                          VALUE = L_VALUE
                          PARENT = L_ELEMENT_CONNID ).
  ENDLOOP.
****创建一个流容器
  L_STREAMFACTORY = L_IXML->CREATE_STREAM_FACTORY( ).
****连接内部ＸＭＬ表到流容器
  L_OSTREAM = L_STREAMFACTORY->CREATE_OSTREAM_ITABLE(
              TABLE = L_XML_TABLE ).
****递交ＸＭＬ文档
  L_RENDERER = L_IXML->CREATE_RENDERER( OSTREAM  = L_OSTREAM
                                        DOCUMENT = L_DOCUMENT ).
  L_RC = L_RENDERER->RENDER( ).
****保存ＸＭＬ文档
  L_XML_SIZE = L_OSTREAM->GET_NUM_WRITTEN_RAW( ).
*  CALL METHOD cl_gui_frontend_services=>gui_download
*    EXPORTING
*      bin_filesize = l_xml_size
*      filename     = 'c:	empINPOT.xml'
*      filetype     = 'BIN'
*    CHANGING
*      data_tab     = l_xml_table
*    EXCEPTIONS
*      OTHERS       = 24.
*  IF sy-subrc = 0.
*    MESSAGE 'XML文件保存成功！！！！' TYPE 'I'.
*    STOP.
*  ENDIF.

*将XML转换成字符串
  DATA: W_STRING TYPE XSTRING.
  DATA LS_XML TYPE STRING.

**将XML转换成字符串
*  call function 'SDIXML_DOM_TO_XML'
*    exporting
*      DOCUMENT      = L_DOCUMENT
*    importing
*      XML_AS_STRING = W_STRING
*      SIZE          = L_XML_SIZE
*    tables
*      XML_AS_TABLE  = L_XML_TABLE
*    exceptions
*      NO_DOCUMENT   = 1
*      others        = 2.
*  if SY-SUBRC <> 0.
** MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
**         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
*  endif.

* LS_XML为转换出来的XML
  CALL FUNCTION 'SCMS_BINARY_TO_STRING'
    EXPORTING
      INPUT_LENGTH = L_XML_SIZE
    IMPORTING
      TEXT_BUFFER  = LS_XML
    TABLES
      BINARY_TAB   = L_XML_TABLE
    EXCEPTIONS
      FAILED       = 1
      OTHERS       = 2.

  IF SY-SUBRC <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.

ENDFORM.                    "save_xml