VC中使用CMarkup类操作XML

时间：2010-07-15 来源：yf956613

//----------UserInfo.xml--------------

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<UserID>luo</UserID>

<UserID>lin</UserID>

</UserInfo>

1。生成UserInfo.xml

CMarkup xml;

xml.SetDoc("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n");

xml.AddElem("UserInfo");

xml.IntoElem();

xml.AddElem("UserID","luo");

xml.AddElem("UserID","lin");

xml.OutOfElem();

xml.Save("UserInfo.xml");

2。浏览特定元素

//----查看所有UserID----

CMarkup xml;

xml.Load("UserInfo.xml");

BOOL bFind = true;

xml.ResetMainPos();

while (xml.FindChildElem("UserID");)

{

//此时接点还是父接点

CString strTagName = _T("");

CString strData = _T("");

strTagName = xml.GetChildTagName();

strData = xml.GetChildData();

TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);

}

/********************这样也可以******************

CMarkup xml;

xml.Load("UserInfo.xml");

BOOL bFind = true;

xml.ResetMainPos();

while (xml.FindChildElem("UserID");)

{

xml.IntoElem();

CString strTagName = _T("");

CString strData = _T("");

strTagName = xml.GetTagName();

strData = xml.GetData();

TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);

xml.OutOfElem();

}*/

/**************这样也可以**********************

CMarkup xml;

xml.Load("UserInfo.xml");

BOOL bFind = true;

xml.ResetMainPos();

xml.FindElem(); //UserInfo

xml.IntoElem();

while (xml.FindElem("UserID");)

{

CString strTagName = _T("");

CString strData = _T("");

strTagName = xml.GetTagName();

strData = xml.GetData();

TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);

}

*/

//-------------结果----------

---tagName:UserID,Data:luo--

---tagName:UserID,Data:lin—

3。修改

//--------把UserID为”luo”改为”flypigluo”-----------

BOOL bLoadXml = false;

CMarkup xml;

bLoadXml = xml.Load("UserInfo.xml");

if (bLoadXml)

{

CString strUserID = _T("");

xml.ResetMainPos();

xml.FindElem();

xml.IntoElem();

while (xml.FindElem("UserID"))

{

strUserID = xml.GetData();

if (strUserID=="luo")

{

xml.SetData(CString("flypig")+strUserID);

xml.Save("UserInfo.xml");

break;

}

}

}

4。添加

4。1 添在最后面（使用的是AddElem）

//加在最后面

BOOL bLoadXml = false;

CMarkup xml;

bLoadXml = xml.Load("UserInfo.xml");

if (bLoadXml)

{

xml.ResetMainPos();

xml.FindElem();

xml.IntoElem();

xml.AddElem("UserID","luoluo");

xml.OutOfElem();

xml.Save("UserInfo.xml");

}

//--------原来为------

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<UserID>luo</UserID>

<UserID>lin</UserID>

</UserInfo>

//---------添加后为-------------

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<UserID>luo</UserID>

<UserID>lin</UserID>

<UserID>luoluo</UserID>

</UserInfo>

4。2 加在最前面（使用InsertElem）

BOOL bLoadXml = false;

CMarkup xml;

bLoadXml = xml.Load("UserInfo.xml");

if (bLoadXml)

{

xml.ResetMainPos();

xml.FindElem();

xml.IntoElem();

xml.InsertElem("UserID","AddUserIDHead");

xml.OutOfElem();

xml.Save("UserInfo.xml");

}

//----原来为—

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<UserID>luo</UserID>

<UserID>lin</UserID>

</UserInfo>

//------修改后-----

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<UserID>AddUserIDHead</UserID>

<UserID>luo</UserID>

<UserID>lin</UserID>

</UserInfo>

5。删除

CMarkup xml;

xml.Load("UserInfo.xml");

BOOL bFind = true;

xml.ResetMainPos();

while (bFind)

{

bFind = xml.FindChildElem("UserID");

if (bFind)

{

//此时接点还是父接点

CString strData = _T("");

strData = xml.GetChildData();

if (strData=="luo")

{

xml.RemoveChildElem();

xml.Save("UserInfo.xml");

break;

}

}

}

6。查找

见第二点浏览。类似

上面的例子里面没有属性这些东西，下面的一个例子是有属性的

//UserInfo1.xml

<?xml version="1.0" encoding="UTF-8" ?>

<UserInfo>

<User UserID="UserID00" UserPwd="UserPwd00" UserLevel="158" />

<User UserID="UserID01" UserPwd="UserPwd01" UserLevel="162" />

<User UserID="UserID02" UserPwd="UserPwd02" UserLevel="165" />

<User UserID="UserID03" UserPwd="UserPwd03" UserLevel="168" />

<User UserID="UserID04" UserPwd="UserPwd04" UserLevel="171" />

<User UserID="UserID05" UserPwd="UserPwd05" UserLevel="175" />

<User UserID="UserID06" UserPwd="UserPwd06" UserLevel="178" />

<User UserID="UserID07" UserPwd="UserPwd07" UserLevel="181" />

<User UserID="UserID08" UserPwd="UserPwd08" UserLevel="184" />

<User UserID="UserID09" UserPwd="UserPwd09" UserLevel="188" />

</UserInfo>

7。产生

CString strID = _T("");

CString strPwd = _T("");

CMarkup xml;

xml.SetDoc("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");

xml.AddElem("UserInfo");

xml.IntoElem();

for (int i=0; i<10; i++)

{

//产生一个随机数，作为权限

srand(UINT(time(NULL)+i));

int nLevel = rand()%256;

strID.Format("UserID%02d",i);

strPwd.Format("UserPwd%02d",i);

xml.AddElem("User");

xml.AddAttrib("UserID",strID);

xml.AddAttrib("UserPwd",strPwd);

xml.AddAttrib("UserLevel",nLevel);

}

xml.OutOfElem();

xml.Save("UserInfo1.xml");

8。查找

CMarkup xml;

BOOL bLoad = false;

BOOL bFind = false;

bLoad = xml.Load("UserInfo1.xml");

if (bLoad)

{

CString strID;

CString strPwd;

xml.ResetMainPos();

xml.FindElem(); //UserInfo

while (xml.FindChildElem("User"))

{

strID = xml.GetChildAttrib("UserID");

strPwd = xml.GetChildAttrib("UserPwd");

TRACE("\n----id:%s,pwd:%s-------\n",strID,strPwd);

if (strID=="UserID00"&&strPwd=="UserPwd00")

{

bFind = true;

break;

}

}

}

if (bFind)

{

TRACE("\n---- find------\n");

}

else

{

TRACE("\n----no find------\n");

}

9。修改

CMarkup xml;

BOOL bLoad = false;

BOOL bFind = false;

bLoad = xml.Load("UserInfo1.xml");

if (bLoad)

{

CString strID;

CString strPwd;

xml.ResetMainPos();

xml.FindElem(); //UserInfo

while (xml.FindChildElem("User"))

{

strID = xml.GetChildAttrib("UserID");

strPwd = xml.GetChildAttrib("UserPwd");

TRACE("\n----id:%s,pwd:%s-------\n",strID,strPwd);

if (strID=="UserID00"&&strPwd=="UserPwd00")

{

bFind = true;

xml.SetChildAttrib("UserID",strID+CString("Modify"));

xml.Save("UserInfo1.xml");

break;

}

}

}

if (bFind)

{

TRACE("\n---- find------\n");

}

else

{

TRACE("\n----no find------\n");

}