unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, xmldom, XMLIntf, msxmldom, XMLDoc, StdCtrls;
type
TForm1 = class(TForm)
XMLDocument1: TXMLDocument;
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
//讀取 xml 的函數
{
功能1: 傳入一個節點參數, 傳回節點及其包含的所有内容;
功能2: 排除了空節點.
}
function ReadXml(node: IXMLNode): string;
nodeList,attrList: IXMLNodeList;
str,strName,strValue: string;
i: Integer;
begin
Result := '';
if not node.HasChildNodes then Exit;
attrList := node.AttributeNodes; {根節點的屬性清單}
nodeList := node.ChildNodes; {根節點下的子節點清單}
str := '<' + node.NodeName;
{先讀取屬性}
for i := 0 to attrList.Count - 1 do
strName := attrList[i].NodeName;
strValue := attrList[i].NodeValue;
str := str + ' ' + strName + '=' + AnsiQuotedStr(strValue, '"');
str := str + '>' + sLineBreak; {sLineBreak 是常量, 相當于 #13#10}
{讀取子節點}
for i := 0 to nodeList.Count - 1 do
strName := nodeList[i].NodeName;
if nodeList[i].IsTextElement then
strValue := nodeList[i].NodeValue;
str := str + '<' + strName + '>' + strValue + '</' + strName + '>' + sLineBreak;
end else if nodeList[i].HasChildNodes then
str := str + ReadXml(nodeList[i]); {這是最關鍵的遞歸調用}
str := str + '</' + strName + '>' + sLineBreak; {封口}
str := str + '</' + node.NodeName + '>'; {封口}
Result := str;
//調用測試(1):
procedure TForm1.Button1Click(Sender: TObject);
str,s1,s2: string;
XMLDocument1.LoadFromFile('c:\temp\test.xml');
{必須用萬一提供的 xml 測試檔案, 才能有相同的傳回值}
{讀取檔案頭}
s1 := AnsiQuotedStr(XMLDocument1.Version, '"'); {讀出版本, 并添加雙引号}
s2 := AnsiQuotedStr(XMLDocument1.Encoding, '"'); {讀出字元集, 并添加雙引号}
str := Format('<?xml version=%s encoding=%s?>',[s1,s2]); {這就是檔案頭了}
str := str + sLineBreak + ReadXml(XMLDocument1.DocumentElement);
ShowMessage(str); {傳回 xml 包含問頭在内的所有内容}
//調用測試(2)
procedure TForm1.Button2Click(Sender: TObject);
str: string;
node: IXMLNode;
node := XMLDocument1.DocumentElement.ChildNodes[0];
str := ReadXml(node);
ShowMessage(str); {傳回傳回根節點下第一個子節點的所有内容}
end.
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本文轉自黃聰部落格園部落格,原文連結:http://www.cnblogs.com/huangcong/archive/2010/08/27/1809952.html,如需轉載請自行聯系原作者