CMarkup类解析xml文件 例子

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CMarkup类解析xml文件  

将CMarkup.cpp和CMarkup.h导入到我们的工程中就可以了。编译可能会出现问题，解决的方法是在CMarkup.cpp的开头加上#include <stdafx.h>，或者关闭预编译也可以。

1、创建一个XML文档

1      CMarkup xml;

2      xml.Load("School.xml");

3      BOOL bFind=TRUE;

4      xml.ResetMainPos();

5     

6     while(xml.FindChildElem("Department"))

7      {

8          CString strTagName=_T("");

9          CString strData=_T("");

10          strTagName=xml.GetChildTagName();    //此时节点是父节点

11          strData=xml.GetChildData();

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

13      }

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

1      CMarkup xml;

2      xml.Load("School.xml");

3      BOOL bFind = TRUE;

4      xml.ResetMainPos();

5     

6     while (xml.FindChildElem("Department"))        

7      {

8          xml.IntoElem();

9          CString strTagName = _T("");

10          CString strData = _T("");

11          strTagName = xml.GetTagName();

12          strData = xml.GetData();

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

14          xml.OutOfElem();

15      }

//***********************或者这样也可以***************************/

1      CMarkup xml;

2      xml.Load("School.xml");

3      BOOL bFind = TRUE;

4      xml.ResetMainPos();

5      xml.FindElem();  //School

6      xml.IntoElem();

7     

8     while (xml.FindElem("Department"))

9      {

10          CString strTagName = _T("");

11          CString strData = _T("");

12          strTagName = xml.GetTagName();

13          strData = xml.GetData();

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

15      }

//***********结果**************

      ---tagName:Department,Data:Automation--

---tagName:Department,Data:Computer--

---tagName:Department,Data:Math--

---tagName:Department,Data:English--

3、修改元素

//把Department为”English“改为”Chinese“

1      CMarkup xml;

2      BOOL bLoadXml=FALSE;

3      bLoadXml=xml.Load("School.xml");

4 

5     if(bLoadXml)

6      {

7          CString str=_T("");

8          xml.ResetMainPos();

9          xml.FindElem();

10          xml.IntoElem();

11         while(xml.FindElem("Department"))

12          {

13              str=xml.GetData();

14             if(str=="English")

15              {

16                  xml.SetData("Chinese");

17                  xml.Save("School.xml");

18                 break;

19              }

20          }

21      }

效果如下：

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

2 <School>

3     <Department>Automation</Department>

4     <Department>Computer</Department>

5     <Department>Math</Department>

6     <Department>Chinese</Department>

7 </School>

8

对于创建一个XML文档，需要实例化一个CMarkup对象，并调用AddElem创建根元素。在这个位置，如果你调用 AddElem("School") ，文档会简单的装一个空元素<School/>. 然后调用AddChildElem 在根元素的下面创建元素。

1      CMarkup xml;

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

3      xml.AddElem("School");

4      xml.IntoElem();

5      xml.AddElem("Department","Automation");

6      xml.AddElem("Department","Computer");

7      xml.AddElem("Department","Math");

8      xml.AddElem("Department","English");

9      xml.OutOfElem();

10      xml.Save("School.xml");

效果如下：

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

2 <School>

3     <Department>Automation</Department>

4     <Department>Computer</Department>

5     <Department>Math</Department>

6     <Department>English</Department>

7 </School>

8

2、浏览特定元素

4、添加

4、1 添加在最后面（用AddElem）

1      CMarkup xml;

2      BOOL bLoadXml=FALSE;

3      bLoadXml=xml.Load("School.xml");

4     if(bLoadXml)

5      {

6          xml.ResetMainPos();

7          xml.FindElem();

8          xml.IntoElem();

9          xml.AddElem("Department","SiQinghua");

10          xml.OutOfElem();

11          xml.Save("School.xml");

12      }

效果如下：

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

2 <School>

3     <Department>Automation</Department>

4     <Department>Computer</Department>

5     <Department>Math</Department>

6     <Department>Chinese</Department>

7     <Department>SiQinghua</Department>

8 </School>

4、2 添加在最前面（用InsertElem）

1      CMarkup xml;

2      BOOL bLoadXml=FALSE;

3      bLoadXml=xml.Load("School.xml");

4     if(bLoadXml)

5      {

6          xml.ResetMainPos();

7          xml.FindElem();

8          xml.IntoElem();

9          xml.AddElem("Department","SiQinghua");

10          xml.OutOfElem();

11          xml.Save("School.xml");

12      }

效果如下：

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

2 <School>

3     <Department>NARI</Department>

4     <Department>Automation</Department>

5     <Department>Computer</Department>

6     <Department>Math</Department>

7     <Department>Chinese</Department>

8     <Department>SiQinghua</Department>

9 </School>

10

5、删除

1      CMarkup xml;

2      BOOL bLoadXml=FALSE;

3      bLoadXml=xml.Load("School.xml");

4     if(bLoadXml)

5      {

6          BOOL bFind=TRUE;

7          xml.ResetMainPos();

8         while(bFind)

9          {

10              bFind=xml.FindChildElem("Department");

11             if(bFind)

12              {

13                  CString strData=_T("");

14                  strData=xml.GetChildData();    //此时节点还是父节点

15                 if("SiQinghua"==strData)

16                  {

17                      xml.RemoveChildElem();

18                      xml.Save("School.xml");

19                     break;

20                  }

21              }

22          }

23      }

效果如下：

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

2 <School>

3     <Department>NARI</Department>

4     <Department>Automation</Department>

5     <Department>Computer</Department>

6     <Department>Math</Department>

7     <Department>Chinese</Department>

8 </School>

上面的例子都是不带属性的，下面举一个带有属性的例子。

1、生成XML文档

1      CMarkup xml;

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

3      xml.AddElem("UserInfo");

4      xml.IntoElem();

5     for(int i=0;i<10;i++)

6      {

7          CString strID=_T("");

8          CString strPwd=_T("");

9 

10          srand(UINT(time(NULL)+i)); //产生一个随机数

11         int nLevel=rand()%256;

12 

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

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

15 

16          xml.AddElem("User");

17          xml.AddAttrib("UserID",strID);

18          xml.AddAttrib("UserPwd",strPwd);

19          xml.AddAttrib("UserLevel",nLevel);

20      }

21      xml.OutOfElem();

22      xml.Save("UserInfo.xml");

效果如下：

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

2 <UserInfo>

3     <User UserID="UserID00" UserPwd="UserPwd00" UserLevel="85"/>

4     <User UserID="UserID01" UserPwd="UserPwd01" UserLevel="88"/>

5     <User UserID="UserID02" UserPwd="UserPwd02" UserLevel="92"/>

6     <User UserID="UserID03" UserPwd="UserPwd03" UserLevel="95"/>

7     <User UserID="UserID04" UserPwd="UserPwd04" UserLevel="98"/>

8     <User UserID="UserID05" UserPwd="UserPwd05" UserLevel="101"/>

9     <User UserID="UserID06" UserPwd="UserPwd06" UserLevel="105"/>

10     <User UserID="UserID07" UserPwd="UserPwd07" UserLevel="108"/>

11     <User UserID="UserID08" UserPwd="UserPwd08" UserLevel="111"/>

12     <User UserID="UserID09" UserPwd="UserPwd09" UserLevel="115"/>

13 </UserInfo>

14

2、查找特定属性

1      CMarkup xml;

2      BOOL bLoadXml=FALSE;

3      BOOL bFind=FALSE;

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

5     if(bLoadXml)

6      {

7          CString strID;

8          CString strPwd;

9          xml.ResetMainPos();

10          xml.FindElem();    //UserInfo

11         while(xml.FindChildElem("User"))

12          {

13              strID=xml.GetChildAttrib("UserID");

14              strPwd=xml.GetChildAttrib("UserPwd");

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

16             if(strID=="UserID02" && strPwd=="UserPwd02")

17              {

18                  bFind=TRUE;

19                 break;

20              }

21          }

22      }

23     if(bFind==TRUE)

24          TRACE("\n---find---\n");

25     else

26          TRACE("\n---not find---\n");

3、修改特定属性

1      CMarkup xml;

2      BOOL bFind=FALSE;

3      BOOL bLoadXml=FALSE;

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

5     if(bLoadXml)

6      {

7          CString strID;

8          CString strPwd;

9          xml.ResetMainPos();

10          xml.FindElem();    //UserInfo

11         while(xml.FindChildElem("User"))

12          {

13              strID=xml.GetChildAttrib("UserID");

14              strPwd=xml.GetChildAttrib("UserPwd");

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

16             if(strID=="UserID02" && strPwd=="UserPwd02")

17              {

18                  bFind=TRUE;

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

20                  xml.Save("UserInfo.xml");

21                 break;

22              }

23          }

24      }

25     if(bFind==TRUE)

26          TRACE("\n---find---\n");

27     else

28          TRACE("\n---not find---\n");

效果如下：

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

2 <UserInfo>

3     <User UserID="UserID00" UserPwd="UserPwd00" UserLevel="85"/>

4     <User UserID="UserID01" UserPwd="UserPwd01" UserLevel="88"/>

5     <User UserID="UserID02Modified" UserPwd="UserPwd02" UserLevel="92"/>

6     <User UserID="UserID03" UserPwd="UserPwd03" UserLevel="95"/>

7     <User UserID="UserID04" UserPwd="UserPwd04" UserLevel="98"/>

8     <User UserID="UserID05" UserPwd="UserPwd05" UserLevel="101"/>

9     <User UserID="UserID06" UserPwd="UserPwd06" UserLevel="105"/>

10     <User UserID="UserID07" UserPwd="UserPwd07" UserLevel="108"/>

11     <User UserID="UserID08" UserPwd="UserPwd08" UserLevel="111"/>

12     <User UserID="UserID09" UserPwd="UserPwd09" UserLevel="115"/>

13 </UserInfo>

 

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