如何在Delphi 2009中解析此XML字符串？

Question

这是XML字符串的信息.

<?xml version="1.0" encoding="UTF-8"?>
<string xmlns="http://tempuri.org/">
<statusInfo><vendorClaimID>BRADY12478018AETNA</vendorClaimID>
<statusID>0</statusID><statusDescription>Unvalidated</statusDescription>
</statusInfo></string>

但这就是它的来源..你必须向右滚动才能看到它.

'<?xml version="1.0" encoding="utf-8"?>'#$D#$A'<string xmlns="http://tempuri.org/">&lt;statusInfo&gt;&lt;vendorClaimID&gt;BRADY12478018AETNA&lt;/vendorClaimID&gt;&lt;statusID&gt;0&lt;/statusID&gt;&lt;statusDescription&gt;Unvalidated&lt;/statusDescription&gt;&lt;/statusInfo&gt;</string>'

我已将字符串加载到XMLDoc中,但不知道如何从这里轻松访问值.

var
doc: IXMLDocument;


doc := LoadXMLData(xmlString);

谢谢!

Answer 1

您可以使用XPath提取节点的值

检查此样本

{$APPTYPE CONSOLE}

{$R *.res}

uses
  MSXML,
  SysUtils,
  ActiveX,
  ComObj;


Const

XMLStr=
'<?xml version="1.0" encoding="UTF-8"?> '+
'<string xmlns="http://tempuri.org/">'+
' <statusInfo>'+
'  <vendorClaimID>BRADY12478018AETNA</vendorClaimID> '+
'  <statusID>0</statusID><statusDescription>Unvalidated</statusDescription> '+
' </statusInfo>'+
'</string> ';

procedure Test;
Var
  XMLDOMDocument  : IXMLDOMDocument;
  XMLDOMNode      : IXMLDOMNode;
begin
  XMLDOMDocument:=CoDOMDocument.Create;
  XMLDOMDocument.loadXML(XmlStr);
  XMLDOMNode := XMLDOMDocument.selectSingleNode('//string/statusInfo/vendorClaimID');
  if XMLDOMNode<>nil then
    Writeln(Format('vendorClaimID %s',[String(XMLDOMNode.Text)]));

  XMLDOMNode := XMLDOMDocument.selectSingleNode('//string/statusInfo/statusID');
  if XMLDOMNode<>nil then
    Writeln(Format('statusID %s',[String(XMLDOMNode.Text)]));

  XMLDOMNode := XMLDOMDocument.selectSingleNode('//string/statusInfo/statusDescription');
  if XMLDOMNode<>nil then
    Writeln(Format('statusDescription %s',[String(XMLDOMNode.Text)]));
end;


begin
 try
    CoInitialize(nil);
    try
      Test;
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode]));
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit');
 Readln;
end.