以下转自 http://www.sqlite.com.cn/MySqlite/12/211.Html
//----------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,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,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,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"); }
