Delphi操作XML(二）
继续研究NativeXML：
NativeXml的方法属性:ANativeXml := TNativeXml.Create(Self);//创建
ANativeXml.XmlFormat := xfReadable; //格式
ANativeXml.EncodingString := 'UTF-8';//编码
ANativeXml.ExternalEncoding := seUTF8;
ANativeXml.LoadFromFile();//从文件夹中导入XML文件
ANativeXml.SaveToFile();//XML文件保存到文件夹
节点的方法属性:
ANativeXml.Root;//XML文件的根节点，注意一切都从根开始
ANativeXml.Root.NodeByName(‘节点名’);//通过节点名获得节点
NativeXml.Root.Attributes;//节点的属性对象
NativeXml.Root.ChildContainers;//节点的子节点对象
NativeXml.Root.NodeNew();//增加新的子节点
NativeXml.Root.Name;//节点名
NativeXml.Root.Value;//节点值
七、添加节点
根节点的添加，可以在创建时直接指定根节点：
var
XmlDoc: TnativeXml;
Node:TxmlNode;
Begin
XmlDoc := TNativeXml.CreateName('Data'); //创建根节点的语法
XmlDoc.XmlFormat := xfReadable;
... ...
添加节点有以下几种方法:
Node：=xmlDoc.Root.NodeNew(‘BasicDataNo’);
Node.value:=’1’;
XmlDoc.Root.NodeNew(‘name’).value:=’sam’;
xmlDoc.Root.WriteString(‘sex’,’male);
____________________________________
更加完整的参考万一的博客，在这里引用一下：
uses NativeXml;
procedure TForm1.Button1Click(Sender: TObject);
var
xml: TNativeXml;
node: TXmlNode;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
//
node := xml.Root.NodeNew('item');
node.Value := '张三';
//
with xml.Root.NodeNew('item') do
begin
Value := '李四';
end;
//
xml.Root.NodeNew('item').Value := '王五';
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<item>张三</item>
<item>李四</item>
<item>王五</item>
</List>
*****************************************}
procedure TForm1.Button2Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
xml.Root.WriteString('N1', '张三');
xml.Root.WriteString('N2', '李四');
xml.Root.WriteString('N2', '王五');
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<N1>张三</N1>
<N2>王五</N2>
</List>
*****************************************}
procedure TForm1.Button3Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
xml.Root.NodeNew('item').WriteString('name', '张三');
xml.Root.NodeNew('item').WriteString('name', '李四');
xml.Root.NodeNew('item').WriteString('name', '王五');
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<item>
<name>张三</name>
</item>
<item>
<name>李四</name>
</item>
<item>
<name>王五</name>
</item>
</List>
*****************************************}
procedure TForm1.Button4Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
with xml.Root.NodeNew('item') do
begin
WriteString('name', '张三');
WriteInteger('age', 11);
end;
with xml.Root.NodeNew('item') do
begin
WriteString('name', '李四');
WriteInteger('age', 22); //WriteFloat()、WriteDateTime()、WriteHex()、WriteBool()...
end;
with xml.Root.NodeNew('item') do
begin
WriteString('name', '王五');
WriteInteger('age', 33);
end;
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<item>
<name>张三</name>
<age>11</age>
</item>
<item>
<name>李四</name>
<age>22</age>
</item>
<item>
<name>王五</name>
<age>33</age>
</item>
</List>
*****************************************}
procedure TForm1.Button5Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
with xml.Root.NodeNewAtIndex(0, 'item') do
begin
WriteString('name', '张三');
WriteInteger('age', 11);
end;
with xml.Root.NodeNewAtIndex(0, 'item') do
begin
WriteString('name', '李四');
WriteInteger('age', 22);
end;
with xml.Root.NodeNewAtIndex(0, 'item') do
begin
WriteString('name', '王五');
WriteInteger('age', 33);
end;
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<item>
<name>王五</name>
<age>33</age>
</item>
<item>
<name>李四</name>
<age>22</age>
</item>
<item>
<name>张三</name>
<age>11</age>
</item>
</List>
*****************************************}
procedure TForm1.Button6Click(Sender: TObject);
var
xml: TNativeXml;
node: TXmlNode;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
node := xml.NodeNew('item');
node.WriteString('name', '张三');
node.WriteInteger('age', 11);
xml.Root.NodeAdd(node);
xml.NodeNewEx('item', node); //NodeNewEx
node.WriteString('name', '李四');
node.WriteInteger('age', 22);
xml.Root.NodeAdd(node);
node := xml.NodeNew('item');
node.WriteString('name', '王五');
node.WriteInteger('age', 33);
xml.Root.NodeAdd(node);
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<item>
<name>张三</name>
<age>11</age>
</item>
<item>
<name>李四</name>
<age>22</age>
</item>
<item>
<name>王五</name>
<age>33</age>
</item>
</List>
*****************************************}
procedure TForm1.Button7Click(Sender: TObject);
var
xml: TNativeXml;
node: TXmlNode;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
node := xml.NodeNew('item', [xml.NodeNewText('name', '张三'), xml.NodeNewInt('age', 11)]);
xml.Root.NodeAdd(node);
node := xml.NodeNew('item', [xml.NodeNewText('name', '李四'), xml.NodeNewInt('age', 22)]);
xml.Root.NodeAdd(node);
node := xml.NodeNew('item', [xml.NodeNewText('name', '王五'), xml.NodeNewInt('age', 33)]);
xml.Root.NodeAdd(node);
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{结果同上}
procedure TForm1.Button8Click(Sender: TObject);
var
xml: TNativeXml;
node: TXmlNode;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
xml.Root.NodesAdd([
xml.NodeNew('item', [xml.NodeNewText('name', '张三'), xml.NodeNewInt('age', 11)]),
xml.NodeNew('item', [xml.NodeNewText('name', '李四'), xml.NodeNewInt('age', 22)]),
xml.NodeNew('item', [xml.NodeNewText('name', '王五'), xml.NodeNewInt('age', 33)])
]);
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{结果同上}
procedure TForm1.Button9Click(Sender: TObject);
var
xml: TNativeXml;
node: TXmlNode;
begin
xml := TNativeXml.CreateName('List');
xml.XmlFormat := xfReadable;
node := xml.NodeNew('A', [xml.NodeNew('B', [xml.NodeNew('C', [xml.NodeNewText('D', 'E')])])]);
xml.Root.NodeAdd(node);
Memo1.Text := xml.WriteToString;
xml.Free;
end;
{***************************************
<?xml version="1.0" encoding="UTF-8"?>
<List>
<A>
<B>
<C>
<D>E</D>
</C>
</B>
</A>
</List>
*****************************************}