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
}
//---------------------------------------------------------------------------