使用Tinyxml创建和读取XML文件的优点：1，可在Windows和Linux中使用；2，方便易学，易用，可在http://sourceforge.net/projects/tinyxml/获取源代码。将其中的文件tinystr.h，tinyxml.h，tinystr.cpp，tinyxmlerror.cpp，tinyxmlparser.cpp和tinyxml.cpp拷贝到您的工程目录，即可方便使用。

下边我写了一个简单的测试程序，创建XML文件，之后从该文件中读取XML节点元素。

#include #include "tinyxml.h"

using namespace std;

#pragma warning(disable:4996)

#define  XML_STR_FILE   "cat.xml"

#define  XML_STR_ROOT   "xml-root"

#define  XML_STR_CAT_INFO  "cat-info"

#define  XML_STR_CAT_NUM  "num"

#define  XML_STR_CAT_AGE  "age"

#define  XML_STR_CAT_COLOR  "color"

#define  XML_STR_CAT_NAME  "name"

#define  IN

#define  OUT

#define  RET_OK     0

#define  RET_ERR    -1

#define  NAME_LENGTH   20

#define  COLOR_LENGTH   20

#define  BUF_SIZE    32

#define  XML_RETURN(x)   { if( RET_OK != (x) ) return RET_ERR; }

#define  XML_ASSERT(x)   { if( NULL == (x) ) return RET_ERR; }

struct CAT_INFO

{

CAT_INFO(): iAge(0)

{

szName[0] = '/0';

szColor[0] = '/0';

};

int iAge; //age

char szName[NAME_LENGTH]; //name

char szColor[COLOR_LENGTH]; //color

};

typedef CAT_INFO * PCAT_INFO;

class Cat_List_Info

{

public:

Cat_List_Info( bool bDel ): bIsDelete( bDel ), iNum( 0 ), pCatList( NULL )

{

};

~Cat_List_Info()

{

if( bIsDelete && pCatList )

{

delete []pCatList;

pCatList = NULL;

}

};

public:

int iNum; //cats number

PCAT_INFO pCatList; //list

private:

bool bIsDelete;

};

//add leaf node

int AddLeafNode( TiXmlNode* pElmParent, const char* pszNode, const char* pszText )

{

TiXmlElement elmNode(pszNode);

TiXmlText elmText(pszText);

XML_ASSERT( elmNode.InsertEndChild( elmText ) );

XML_ASSERT( pElmParent->InsertEndChild( elmNode ) );

return RET_OK;

}

//get leaf node

int GetLeafNode( TiXmlNode* pElmParent, char* pszNode, char* pszText )

{

TiXmlNode *pTemp;

if ( pElmParent && ( pTemp = pElmParent->FirstChild( pszNode ) ) )

{

if ( pTemp = pTemp->FirstChild() )

{

strcpy( pszText, pTemp->Value() );

return RET_OK;

}

}

return RET_ERR;

}

int WriteXmlToFile( IN Cat_List_Info *pCats )

{

TiXmlDeclaration Declaration( "1.0", "", "" );

TiXmlDocument xmlDoc( XML_STR_FILE );

xmlDoc.InsertEndChild( Declaration );

TiXmlElement elmRoot( XML_STR_ROOT );

char szBuf[BUF_SIZE];

szBuf[0] = '/0';

if ( !pCats )

{

return RET_ERR;

}

if ( pCats->iNum > 0)

{

//num

sprintf( szBuf, "%d", pCats->iNum );

XML_RETURN( AddLeafNode( &elmRoot, XML_STR_CAT_NUM, szBuf ) );

}

else

{

return RET_ERR;

}

for ( int i = 0; i < pCats->iNum; i++ )

{

TiXmlElement elmCat( XML_STR_CAT_INFO );

//name

if ( '/0' != pCats->pCatList[i].szName[0] )

{

XML_RETURN( AddLeafNode( &elmCat, XML_STR_CAT_NAME, pCats->pCatList[i].szName ) );

}

//age

sprintf( szBuf, "%d", pCats->pCatList[i].iAge );

XML_RETURN( AddLeafNode( &elmCat, XML_STR_CAT_AGE, szBuf ) );

//color

if ( '/0' != pCats->pCatList[i].szColor[0] )

{

XML_RETURN( AddLeafNode( &elmCat, XML_STR_CAT_COLOR, pCats->pCatList[i].szColor ) );

}

XML_ASSERT( elmRoot.InsertEndChild( elmCat ) );

}

XML_ASSERT( xmlDoc.InsertEndChild( elmRoot ) );

//save

xmlDoc.SaveFile();

return RET_OK;

}

int ReadXmlFromFile( OUT Cat_List_Info *pCats )

{

TiXmlElement *pRootNode = NULL;

TiXmlElement *pTemp = NULL;

char szBuf[BUF_SIZE];

szBuf[0] = '/0';

if (!pCats)

{

return RET_ERR;

}

TiXmlDocument xmlDoc( XML_STR_FILE );

if( !xmlDoc.LoadFile() )

return RET_ERR;

XML_ASSERT( pRootNode = xmlDoc.RootElement() );

pTemp = pRootNode->FirstChildElement( XML_STR_CAT_NUM );

if ( pTemp )

{

GetLeafNode( pRootNode, XML_STR_CAT_NUM, szBuf );

pCats->iNum = atoi( szBuf );

}

if ( pCats->iNum > 0 )

{

TiXmlNode *pCat = NULL;

pCat = pRootNode->FirstChild( XML_STR_CAT_INFO );

if ( pCat )

{

for ( int i = 0; i < pCats->iNum; i++ )

{

//name

GetLeafNode( pCat, XML_STR_CAT_NAME, pCats->pCatList[i].szName );

//age

GetLeafNode( pCat, XML_STR_CAT_AGE, szBuf );

pCats->pCatList[i].iAge = atoi(szBuf);

//color

GetLeafNode( pCat, XML_STR_CAT_COLOR, pCats->pCatList[i].szColor );

pCat = pCat->NextSibling();

}

}

}

else

{

return RET_ERR;

}

return RET_OK;

}

int main(int argc, char* argv[])

{

Cat_List_Info cats(true);

cats.iNum = 2;

cats.pCatList = new CAT_INFO[cats.iNum];

if ( NULL == cats.pCatList )

{

cout << "no memory..." << endl;

return RET_ERR;

}

cats.pCatList[0].iAge = 5;

strcpy( cats.pCatList[0].szColor, "white" );

strcpy( cats.pCatList[0].szName, "Bob" );

cats.pCatList[1].iAge = 6;

strcpy( cats.pCatList[1].szColor, "black" );

strcpy( cats.pCatList[1].szName, "Tom" );

int iRet = WriteXmlToFile( &cats );

iRet = ReadXmlFromFile( &cats );

if ( RET_OK == iRet )

{

for ( int i = 0; i < cats.iNum; i++ )

{

cout << i << " cat's name is " << cats.pCatList[i].szName << endl;

cout << i << " cat's age is " << cats.pCatList[i].iAge << endl;

cout << i << " cat's color is " << cats.pCatList[i].szColor << endl;

}

}

system( "pause" );

return 0;

}

读取TinyXml读取xml的节点以及属性:

// TODO: Add extra validation here

TiXmlDocument *myDocument = new TiXmlDocument("lengquan.xml");

myDocument->LoadFile();

//获得根元素，

TiXmlElement *RootElement = myDocument->RootElement();

//输出根元素名称

//MessageBox(RootElement->Value());

TiXmlElement *FirstNode=RootElement->FirstChildElement();

//MessageBox(FirstNode->Value());

TiXmlElement *FirstChild=FirstNode->FirstChildElement();

//MessageBox(FirstChild->Value());

TiXmlElement *SecondChild=FirstChild->NextSiblingElement();

//MessageBox(SecondChild->GetText());

//获取属性 获取第一个属性值

TiXmlAttribute *AddrAttr=SecondChild->FirstAttribute();

//MessageBox(AddrAttr->Value());

//获取第二个属性值。

TiXmlAttribute *NoAttr=AddrAttr->Next();

MessageBox(NoAttr->Value());