相关方法与属性: TNativeXml.Create(...); TNativeXml.CreateEx(...); TNativeXml.CreateName(...);
Obj.New; Obj.ReadFromString(...);
Obj.VersionString; Obj.EncodingString;
测试代码:
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uses NativeXml; //!
const xmlFile = 'C:\Temp\xml_test_files\basic.xml'; //测试文件
{使用 Create 建立时可指定属主并随属主一同释放}
procedure TForm1.Button1Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.Create(Self);
// xml := TNativeXml.Create(nil);
// System.ReportMemoryLeaksOnShutdown := True;
// xml.Free;
end;
{CreateEx}
procedure TForm1.Button2Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateEx(False, //是否建立 Declaration 对象, 如:
True, //是否建立跟节点
nil //指定属主
);
ShowMessageFmt('version: %s', [xml.VersionString]); //显示 XML 版本
ShowMessageFmt('encoding: %s', [xml.EncodingString]); //显示 XML 编码
xml.Free;
xml := TNativeXml.CreateEx(True, true, nil);
ShowMessageFmt('version: %s', [xml.VersionString]); //1.0
ShowMessageFmt('encoding: %s', [xml.EncodingString]); //UTF-8
xml.Free;
end;
{使用 CreateName 建立可直接指定根节点的名称}
procedure TForm1.Button3Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.CreateName('MyRoot');
ShowMessage(xml.Root.Name); //MyRoot
xml.Free;
end;
{使用 New 方法清空并重新构建}
procedure TForm1.Button4Click(Sender: TObject);
var
xml: TNativeXml;
begin
xml := TNativeXml.Create(nil);
xml.LoadFromFile(xmlFile);
ShowMessage(xml.WriteToString);
xml.New;
// xml.Clear;
ShowMessage(xml.WriteToString);
xml.Free;
end;
{使用 ReadFromString 从文本读入}
procedure TForm1.Button5Click(Sender: TObject);
const
str = '<?xml version="1.0"?><Root><Items><item>1</item><item>2</item></Items></Root>';
var
xml: TNativeXml;
begin
xml := TNativeXml.Create(nil);
xml.ReadFromString(str);
xml.XmlFormat := xfReadable;
Memo1.Text := xml.WriteToString;
end;