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

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#ifndef Unit1H

#define Unit1H

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#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;

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#endif

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#include <vcl.h>

#pragma hdrstop



#include "Unit1.h"

#include <stdio.h>

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#pragma package(smart_init)

#pragma resource "*.dfm"

TForm1 *Form1;

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__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

}

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