VC++中利用CMarkup类对XML文件的操作.doc

(一) 先讲一下XML中的物殊字符，手动填写时注意一下。字符 字符实体& &或& '或 >或 <或& "或(二) CMarkup类的源代码。这是目前的最新版本；这是官网示例文件，取出里面的Markup.cpp和Markup.h，导入你的工程里面，CMarkup类就可以用了；下载地址：/Markup83.zip(三) 创建一个XML文档。CMarkup xml;xml.AddElem( ORDER );xml.AddChildElem( ITEM );xml.IntoElem();xml.AddChildElem( SN, 132487A-J );xml.AddChildElem( NAME, crank casing );xml.AddChildElem( QTY, 1 );xml.Save(c:UserInfo.xml);效果如下：132487A-Jcrank casing1(四) 浏览特定元素CMarkup xml;xml.Load(UserInfo.xml);while ( xml.FindChildElem(ITEM) ) xml.IntoElem(); xml.FindChildElem( SN ); CString csSN = xml.GetChildData(); xml.FindChildElem( QTY ); int nQty = atoi( xml.GetChildData() ); xml.OutOfElem();(五)增加元素和属性添加在最后面,使用的是AddElem;添加在最前面,使用InsertElem。CMarkup xml;xml.Load(c:UserInfo.xml);xml.AddElem( ORDER );xml.IntoElem(); / 进入 ORDER xml.AddElem( ITEM ); xml.IntoElem(); / 进入 ITEM xml.AddElem( SN, 4238764-A ); /添加元素 xml.AddElem( NAME, bearing );/添加元素 xml.AddElem( QTY, 15 );/添加元素 xml.OutOfElem(); / 退出 ITEM xml.AddElem( SHIPMENT );xml.IntoElem(); / 进入 SHIPMENTxml.AddElem( POC );/添加元素xml.SetAttrib( type, non-emergency);/添加属性xml.IntoElem(); / 进入 POCxml.AddElem( NAME, John Smith);/添加元素xml.AddElem( TEL, 555-1234);/添加元素xml.Save(c:UserInfo.xml);效果如下：132487A-Jcrank casing14238764-Abearing15John Smith555-1234(六) 修改元素和属性如将POC中的属性type改成：change;元素TEL改成：123456789 CMarkup xml;if (xml.Load(UserInfo.xml) CString strUserID = _T(); xml.ResetMainPos(); if (xml.FindChildElem(SHIPMENT) xml.IntoElem(); if (xml.FindChildElem(POC) xml.IntoElem(); CString str_type=xml.GetAttrib(type); MessageBox(str_type); xml.SetAttrib(type,change); strUserID = xml.GetData(); if (xml.FindChildElem(TEL) xml.IntoElem(); xml.SetData(123456789); xml.Save(UserInfo.xml); return; (七)删除元素：删除SN=132487A-J的项目。CMarkup xml;if (xml.Load(UserInfo.xml) CString strUserID = _T(); xml.ResetMainPos(); if (xml.FindChildElem(ITEM) xml.IntoElem(); CString str_sn; xml.FindChildElem(SN); str_sn=xml.GetChildData(); if(str_sn=132487A-J) xml.RemoveElem(); xml.Save(UserInfo.xml); DotNet中使用xml相对比较轻松，在vc中操作xml，有些繁琐。最近在网络上得知CMarkup比较好用，于是试了下，还好，就把部分例子写出来。以后有时间的话，再写清楚点/-UserInfo.xml-luolin1。生成UserInfo.xmlCMarkup xml;xml.SetDoc(rn);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(); /UserInfoxml.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:lin3。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-luolin/-添加后为-luolinluoluo4。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luolin/-修改后-AddUserIDHeadluolin5。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.xml7。产生CString strID = _T();CString strPwd = _T();CMarkup xml;xml.SetDoc();xml.AddElem(UserInfo);xml.IntoElem();for (int i=0; i10; 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(); /UserInfowhile (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);elseTRACE(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(); /UserInfowhile (xml.FindChildElem(User)st