VC解析XML檔案-CMarkup的使用詳解

最後更新：2018-12-08 來源：互聯網

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VC解析XML檔案的工具有很多，CMarkup， tinyXML，還有IBM的，MS的等等。
據說tinyXML很好，可能字元集問題，我編譯不了。
所以就用CMarkup來解析，使用過後，覺得非常不錯，使用起來很方便。
CMarkup：http://www.firstobject.com/
發現網上有方法很法，我就摘下來了複製代碼代碼如下://----------UserInfo.xml--------------
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>
//----------UserInfo.xml--------------
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>

一、產生UserInfo.xml
複製代碼代碼如下: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");
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");

二、瀏覽特定元素
複製代碼代碼如下://----查看所有UserID----
CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();
while (xml.FindChildElem("UserID");)
{
//此時接點還是父接點
CString strTagName = _T("");
CString strData = _T("");
strTagName = xml.GetChildTagName();
strData = xml.GetChildData();
TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);
}
/********************這樣也可以******************
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();
}*/
/**************這樣也可以**********************
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);
}
*/

複製代碼代碼如下://-------------結果----------
---tagName:UserID,Data:luo--
---tagName:UserID,Data:lin—
//----查看所有UserID----
CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();
while (xml.FindChildElem("UserID");)
{
//此時接點還是父接點
CString strTagName = _T("");
CString strData = _T("");
strTagName = xml.GetChildTagName();
strData = xml.GetChildData();
TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);
}
/********************這樣也可以******************
CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();

三、修改
複製代碼代碼如下://--------把UserID為”luo”改為”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;
}
}
}
//--------把UserID為”luo”改為”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;
}
}
}

四、添加
1 添在最後面（使用的是AddElem）複製代碼代碼如下://加在最後面
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");
}
//--------原來為------
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>
//---------添加後為-------------
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
<UserID>luoluo</UserID>
</UserInfo>

2 加在最前面（使用InsertElem）複製代碼代碼如下: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");
}
//----原來為—
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>
//------修改後-----
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>AddUserIDHead</UserID>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>
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");
}
//----原來為—
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>
//------修改後-----
xml version="1.0" encoding="UTF-8" ?>
<UserInfo>
<UserID>AddUserIDHead</UserID>
<UserID>luo</UserID>
<UserID>lin</UserID>
</UserInfo>

五、刪除
複製代碼代碼如下:CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();
while (bFind)
{
bFind = xml.FindChildElem("UserID");
if (bFind)
{
//此時接點還是父接點
CString strData = _T("");
strData = xml.GetChildData();
if (strData=="luo")
{
xml.RemoveChildElem();
xml.Save("UserInfo.xml");
break;
}
}
}
CMarkup xml;
xml.Load("UserInfo.xml");
BOOL bFind = true;
xml.ResetMainPos();
while (bFind)
{
bFind = xml.FindChildElem("UserID");
if (bFind)
{
//此時接點還是父接點
CString strData = _T("");
strData = xml.GetChildData();
if (strData=="luo")
{
xml.RemoveChildElem();
xml.Save("UserInfo.xml");
break;
}
}
}

六、尋找
見第二點瀏覽。類似上面的例子裡面沒有屬性這些東西，下面的一個例子是有屬性的複製代碼代碼如下://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>
//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>

七、產生
複製代碼代碼如下: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++)
{
//產生一個隨機數，作為許可權
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");
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++)
{
//產生一個隨機數，作為許可權
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");

八、尋找
複製代碼代碼如下: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");
}
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");
}

九、修改
複製代碼代碼如下: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");
}

CMarkup字元集問題
CMarkup支援Unicode，_MBCS宏定義。VS預設設定為MBCS宏定義，未設定該宏時為UTF-8編碼。
有 MBCS宏定義，且開啟的檔案是UTF-8編碼：
CMarkup在Load時將UTF-8轉換ANSI編碼格式，所以要在讀取的地方設定
#include <locale.h>
setlocale(LC_ALL, "");
沒有MBCS宏定義，且開啟的檔案是UTF-8編碼：
系統預設將檔案按UTF-8格式讀入系統中，所以顯示的時候要手動將資料轉換為ANSI格式的進行顯示
#include <locale.h>
setlocale(LC_ALL, "");
strVal = CMarkup::UTF8ToA(strVal);
PS：通過strcpy等拷貝函數可以修正。

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