方法一：ABAP 使用method方式操作XML
方法二：STRANS 轉換工具;使用strans 開發将内表轉換xml檔案，并可以将xml檔案解析回到内表；
->一、XML定義？
if_ixml
if_ixml_document
if_ixml_node
if_ixml_element
if_ixml_istream
if_ixml_ostream
document、element、ATTRIBUTE、COMMENT、TEXT 都屬于Node
2.解析
ABAP程式解析XML
*&s1.讀取xml檔案，
*&s2.
(1)create
(2)create document
(3)create STREAM FACTORY
(4)create ISTREAM ITABLE
IXML = CL_IXML=>CREATE( ).
DOCUMENT = IXML->CREATE_DOCUMENT( ).
STREAMFACTORY = IXML->CREATE_STREAM_FACTORY( ).
ISTREAM = STREAMFACTORY->CREATE_ISTREAM_ITABLE( TABLE = XML_TABLE
SIZE = TOTALSIZE ).
*a program for parsing.
*A computer equipped with an XML parser can make decisions about this
*information.
PARSER = IXML->CREATE_PARSER( STREAM_FACTORY = STREAMFACTORY
ISTREAM = ISTREAM
DOCUMENT = DOCUMENT ).
*&s3.分節點進行解析：
CALL METHOD ISTREAM->CLOSE( ).
CLEAR ISTREAM.
NODE = DOCUMENT.
PERFORM PRINT_NODE USING NODE 0.
