delphi xml

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls,XMLDoc,XMLIntf;

type
  TForm1 = class(TForm)
    btn1: TButton;
    btn2: TButton;
    mmo1: TMemo;
    procedure btn1Click(Sender: TObject);
    procedure btn2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.btn1Click(Sender: TObject);
var
Xml: TXMLDocument;
Rootnode,node : IXMLNode;
begin
Xml := TXMLDocument.Create(nil);
// Xml.LoadFromFile('aaa.xml');
try
//加入版本信息 ‘<?xml version="1.0" encoding="GB2312" ?> ’
Xml.Active := True;
Xml.Version := '1.0';
Xml.Encoding :='GB2312';

Rootnode := Xml.CreateNode('CIF_INFO');
Xml.DocumentElement := Rootnode;
node := Xml.CreateNode('TXNCODE');
Rootnode.ChildNodes.Add(node);
node.Text := '420001';
node := Xml.CreateNode('RESPCODE');
Rootnode.ChildNodes.Add(node);
node.Text := '0000';
node := Xml.CreateNode('CIFID');
Rootnode.ChildNodes.Add(node);
node.Text := '0030209728';
node: = Xml.CreateNode ( ' RESCODE ' ); 
Rootnode.ChildNodes.Add (node); 
Node.Text: = ' 0000 ' ; 
node: = Xml.CreateNode ( ' RESMSG ' ); 
Rootnode.ChildNodes.Add (node) ; 
Node.Text: = '' ; 

Xml.SaveToFile ( ' Aaa.Xml ' ); 
Xml.Active: = False; 
Showmessage ( ' !创建success ' );
 Finally 
Xml.Free; 
End ;
 End ; 



Procedure TForm1.btn2Click(Sender: TObject);
var
Xml: TXMLDocument;
Rootnode,node : IXMLNode;
nodelist:IXMLNodeList;
b,c,str :string;
i:Integer;
begin
Xml := TXMLDocument.Create(Application);


try
Xml.LoadFromFile('aaa.xml');
Xml.Active := True;

Rootnode := Xml.DocumentElement;
nodeList :=Rootnode.ChildNodes;
 for i:=0 to nodelist.Count-1 do
    begin
      if  Rootnode.ChildNodes[i].NodeValue = null then
         begin
           c:='空';
         end
         else
         begin
           c:= Rootnode.ChildNodes[i].NodeValue;
         end;
      str:=str+c+#13#10;
    end;
//b := Rootnode.ChildNodes[ 'CIFID'].NodeValue;
mmo1.Lines.Add(str);
xml.Active := False;
finally
Xml.Free;
end;
end;

end.