Question

任何人都可以帮助我如何从xml获取属性值？

我的XML看起来像......

<?xml version="1.0" encoding="iso-8859-2"?>
<root>
 <class classtype="TSampleClass" reference_id="1">
 <class name="FList" classtype="TList&lt;class.TKtgSampleClass;" reference_id="2">
  <dynarray name="FItems" count="2" reference_id="3">
    <class index="0" classtype="TRecord" reference_id="4">
      <member name="FID" type="Integer">1</member>
      <member name="FName" type="string">Name1</member>
      <member name="FComment" type="string">comment1</member>
    </class>
    <class index="1" classtype="TRecord" reference_id="5">
      <member name="FID" type="Integer">0</member>
      <member name="FName" type="string">Name2</member>
      <member name="FComment" type="string">comment2</member>
    </class>
  </dynarray>
  <member name="FCount" type="Integer">2</member>
  <class name="FArrayManager" classtype="TMoveArrayManager&lt;class.TKtgSampleClass;" reference_id="6"/>
 </class>
 <member name="FNextID" type="Integer">2</member>
 </class>
 </root>

我试过这个：

procedure GetValues;
var
  C: Integer;
  vXMLDOC: IXMLDOMDocument;
  vNodes : IXMLDOMNodeList;
  vNode : IXMLDOMNode;
  s: string;
begin
  vXMLDOC := CoDOMDocument.Create;
  vXMLDOC.load(c_FileName);

  vNodes := vXMLDOC.selectNodes('//dynarray/class');

for C := 0 to vNodes.length -1 do
begin
  showmessage(vNodes.item[C].text);
//    s := vNodes.item[C].attributes.getNamedItem('FName').text;
 end;
end;

vNodes.item [C] .text提供所有值，但我需要逐个值（FID，FName ...）

谢谢！

Answer 1

如果您现在想要获取<member>节点的属性，那么一种方法就是这样：

procedure TForm1.GetValues;
var
  C, i: Integer;
  vXMLDOC: IXMLDOMDocument;
  vNodes : IXMLDOMNodeList;
  vNode : IXMLDOMNode;
  vAttr : IXMLDomNode;
  s: string;
begin
  vXMLDOC := CoDOMDocument.Create;
  vXMLDOC.loadXML(Memo1.Lines.Text);

  vNodes := vXMLDOC.selectNodes('/root/class/class/dynarray/class/*');  // will find ALL nodes
  //  below the final <class> one

  //  OR  vNodes := vXMLDOC.selectNodes('/root/class/class/dynarray/class/member');  // will
  //  find only the <member> nodes below the final <class> one

  for C := 0 to vNodes.length -1 do
  begin
    vNode := vNodes.item[C];
    Memo2.Lines.Add('NodeText: '+ vNode.text);
    for i := 0 to vNode.attributes.length - 1 do begin
      vAttr := vNode.attributes.item[i];
      s := Format('attr name: %s, attr value: %s', [vAttr.nodeName, vAttr.nodeValue]);
      Memo2.Lines.Add(s);
    end;
    //  instead of the `for i:=` loop, you could do something like this
    //  vAttr := vNode.attributes.getNamedItem('name');
    //  s := Format('attr name: %s, attr value: %s', [vAttr.nodeName, vAttr.nodeValue]);
    //  Memo2.Lines.Add(s);

  end;
end;

从XML获取属性值

1 个答案: