Delphi中的DOMElement | getElementsByTagName

本文介绍了Delphi中的DOMElement的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

如何在DOMNodeList对象中使用.getElementsByTagName？
喜欢：

how i can use .getElementsByTagName in DOMNodeList Object ? Like:

procedure TForm1.selecionarClick(Sender: TObject);
var  DOMDocument: iXMLDOMDocument;
     DOMNodeList: iXMLDOMNodeList;
     DOMNode: iXMLDOMNode;
     DOMElement: iXMLDOMElement;
     i: Integer;
begin
      Memo.Text := '';
      with DOMDocument do
      begin
            DOMDocument := coDOMDocument.Create;
            DOMDocument.load( 'C:\Usuarios.xml' );
            DOMDocument.preserveWhiteSpace := false;
            DOMNodeList := DOMDocument.selectNodes( './/usuario[@codigo="'+codigo.Text+'"]/' );
            for i := 0 to DOMNodeList.length - 1 do
            begin

            end;
      end;
end;

我的XML结构：

<?xml version="1.0" encoding="utf-8"?>
<usuarios>
    <usuario codigo="1">
           <nome>Name Node</nome>
           <sobrenome>Last Name Node</sobrenome>
           <cidade>City Node</cidade>
           <estado>State Node</estado>
           <email>Mail Node</email>
    </usuario>
</usuarios>

推荐答案

GetElementsByTagName 不是 IXMLDOMNodeList 的成员，但是 IXMLDOMDocument 。在IXMLDOMNodeList上，要通过标签名称来抓取，您必须循环使用这种类型的结构：

GetElementsByTagName is not a member of IXMLDOMNodeList, but of IXMLDOMDocument. On IXMLDOMNodeList, to grab by tag name you must loop using this type of construct:

for i := 0 to DOMNodeList.length - 1 do
begin
  DOMNode := DOMNodeList[i];
  if DOMNode.nodeName = 'aTagName' then
   DoStuff(DOMNode);
  // etc etc....
end;

HTH

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