XML解析

//读取 xml 的函数
{
  功能1: 传入一个节点参数, 返回节点及其包含的所有内容;
  功能2: 排除了空节点.
}
function ReadXml(node: IXMLNode): string;
var
  nodeList,attrList: IXMLNodeList;
  str,strName,strValue: string;
  i: Integer;
begin
  Result := '';
  if not node.HasChildNodes then Exit;

  attrList := node.AttributeNodes;      {根节点的属性列表}
  nodeList := node.ChildNodes;          {根节点下的子节点列表}

  str := '<' + node.NodeName;

  {先读取属性}
  for i := 0 to attrList.Count - 1 do
  begin
    strName := attrList[i].NodeName;
    strValue := attrList[i].NodeValue;
    str := str + ' ' + strName + '=' + AnsiQuotedStr(strValue, '"');
  end;
  str := str + '>' + sLineBreak; {sLineBreak 是常量, 相当于 #13#10}

  {读取子节点}
  for i := 0 to nodeList.Count - 1 do
  begin
    strName := nodeList[i].NodeName;
    if nodeList[i].IsTextElement then
    begin
      strValue := nodeList[i].NodeValue;
      str := str + '<' + strName + '>' + strValue + '</' + strName + '>' + sLineBreak;
    end else if nodeList[i].HasChildNodes then
    begin
      str := str + ReadXml(nodeList[i]);               {这是最关键的递归调用}
      str := str + '</' + strName + '>' + sLineBreak;  {封口}
    end;
  end;

  str := str + '</' + node.NodeName + '>'; {封口}

  Result := str;
end;