c++ builder 中的 XMLDocument 类详解(13) 遍历XML文件

//---------------------------------------------------------------------------

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <msxmldom.hpp>
#include <XMLDoc.hpp>
#include <xmldom.hpp>
#include <XMLIntf.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE-managed Components
    TButton *btn_1;
    TButton *btn_2;
    TXMLDocument *XMLDocument1;
    void __fastcall btn_1Click(TObject *Sender);
private:	// User declarations
public:		// User declarations
    __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
#include <stdio.h>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------

String ReadXml(_di_IXMLNode node)
{
    _di_IXMLNodeList nodeList,attrList;

    String str,strName,strValue,result;
    int i;
    if(!node->HasChildNodes)
        return "";
    attrList=node->AttributeNodes;//根节点属性列表
    nodeList=node->ChildNodes;  //根节点下的子节点列表

    str="<"+node->NodeName;

    //先读取属性
    for(int i=0;i<attrList->Count-1;i++)
    {
        strName=attrList->Nodes[i]->Text;//结点名字
        strValue=attrList->Nodes[i]->Text; //结点值
        str=str+" "+strName+"="+AnsiQuotedStr(strValue,'\"');//AnsiQuotedStr定界符函数
    }
    str=str+">"+sLineBreak;//sLineBreak是常量
    //读取子结点

    for(int i=0;i<nodeList->Count;i++)
    {
        if(nodeList->Nodes[i]->IsTextElement)//如果他是文本结点则读它的数据
        {
            strName=nodeList->Nodes[i]->NodeValue;//结点值
            str=str+"<"+strName+">"+strValue+"</"+strName+">"+sLineBreak;
        }
        else if(nodeList->Nodes[i]->HasChildNodes)//如果是不是文本结点而且有子结点
        {
            str=str+ReadXml(nodeList->Nodes[i]);
            str=str+"</"+strName+">"+sLineBreak;
        }
    }
    str=str+"</"+node->NodeName+">";//封口
    return str;
}



//调用测试
void __fastcall TForm1::btn_1Click(TObject *Sender)
{
    String str_an,s1,s2;
    char str[50];

    XMLDocument1->LoadFromFile("D:\\code\\B_C_B\\XMLDocument\\test.xml");

    //读取文件
    s1=AnsiQuotedStr(XMLDocument1->Version,'"');//读出版本, 并添加双引号
    s2=AnsiQuotedStr(XMLDocument1->Encoding,'"');//读出字符集, 并添加双引号
//    str=Format("<?xml version=%s encoding=%s?>",s1,s2,2);//
    sprintf(str,"<?xml version=%s encoding=%s?>",s1,s2);// 这就是头文件了
    str_an=AnsiString(str);
    str_an=str_an+sLineBreak+ReadXml(XMLDocument1->DocumentElement);
    ShowMessage(str_an);//返回
}
//---------------------------------------------------------------------------