vc中操作Xml

vc中操作Xml
http://www.firstobject.com/dn_markup.htm
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。

1. 生成UserInfo.xml
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1. CMarkup xml;
2. xml.SetDoc("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n");
3. xml.AddElem("UserInfo");
4. xml.IntoElem();
5. xml.AddElem("UserID","luo");
6. xml.AddElem("UserID","lin");
7. xml.OutOfElem();
8. 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");

2. 浏览特定元素
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1. //----查看所有UserID----
2. CMarkup xml;
3. xml.Load("UserInfo.xml");
4. BOOL bFind = true;
5. xml.ResetMainPos();
6. while (xml.FindChildElem("UserID");)
7. {
8. //此时接点还是父接点
9. CString strTagName = _T("");
10. CString strData = _T("");
11. strTagName = xml.GetChildTagName();
12. strData = xml.GetChildData();
13. TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);
14. }
15. /********************这样也可以******************
16. CMarkup xml;
17. xml.Load("UserInfo.xml");
18. BOOL bFind = true;
19. xml.ResetMainPos();
21. while (xml.FindChildElem("UserID");)
22. {
23. xml.IntoElem();
24. CString strTagName = _T("");
25. CString strData = _T("");
26. strTagName = xml.GetTagName();
27. strData = xml.GetData();
28. TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);
29. xml.OutOfElem();
30. }*/
31. /**************这样也可以**********************
32. CMarkup xml;
33. xml.Load("UserInfo.xml");
34. BOOL bFind = true;
35. xml.ResetMainPos();
36. xml.FindElem(); //UserInfo
37. xml.IntoElem();
38. while (xml.FindElem("UserID");)
39. {
40. CString strTagName = _T("");
41. CString strData = _T("");
42. strTagName = xml.GetTagName();
43. strData = xml.GetData();
44. TRACE("\n---tagName:%s,Data:%s--\n",strTagName,strData);
45. }
46. */
47. //-------------结果----------
48. ---tagName:UserID,Data:luo--
49. ---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
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1. //--------把UserID为”luo”改为”flypigluo”-----------
2. BOOL bLoadXml = false;
3. CMarkup xml;
4. bLoadXml = xml.Load("UserInfo.xml");
5. if (bLoadXml)
6. {
7. CString strUserID = _T("");
8. xml.ResetMainPos();
9. xml.FindElem();
10. xml.IntoElem();
11. while (xml.FindElem("UserID"))
12. {
13. strUserID = xml.GetData();
14. if (strUserID=="luo")
15. {
16. xml.SetData(CString("flypig")+strUserID);
17. xml.Save("UserInfo.xml");
18. break;
19. }
20. }
21. }
//--------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）
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1. //加在最后面
2. BOOL bLoadXml = false;
3. CMarkup xml;
4. bLoadXml = xml.Load("UserInfo.xml");
5. if (bLoadXml)
6. {
7. xml.ResetMainPos();
8. xml.FindElem();
9. xml.IntoElem();
10. xml.AddElem("UserID","luoluo");
11. xml.OutOfElem();
12. xml.Save("UserInfo.xml");
13. }
14. //--------原来为------
15. <?xml version="1.0" encoding="UTF-8" ?>
16. <UserInfo>
17. <UserID>luo</UserID>
18. <UserID>lin</UserID>
19. </UserInfo>
20. //---------添加后为-------------
21. <?xml version="1.0" encoding="UTF-8" ?>
22. <UserInfo>
23. <UserID>luo</UserID>
24. <UserID>lin</UserID>
25. <UserID>luoluo</UserID>
26. </UserInfo>
//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）
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1. BOOL bLoadXml = false;
2. CMarkup xml;
3. bLoadXml = xml.Load("UserInfo.xml");
4. if (bLoadXml)
5. {
6. xml.ResetMainPos();
7. xml.FindElem();
8. xml.IntoElem();
9. xml.InsertElem("UserID","AddUserIDHead");
10. xml.OutOfElem();
11. xml.Save("UserInfo.xml");
12. }
13. //----原来为—
14. <?xml version="1.0" encoding="UTF-8" ?>
15. <UserInfo>
16. <UserID>luo</UserID>
17. <UserID>lin</UserID>
18. </UserInfo>
19. //------修改后-----
20. <?xml version="1.0" encoding="UTF-8" ?>
21. <UserInfo>
22. <UserID>AddUserIDHead</UserID>
23. <UserID>luo</UserID>
24. <UserID>lin</UserID>
25. </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
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1. CMarkup xml;
2. xml.Load("UserInfo.xml");
3. BOOL bFind = true;
4. xml.ResetMainPos();
5. while (bFind)
6. {
7. bFind = xml.FindChildElem("UserID");
8. if (bFind)
9. {
10. //此时接点还是父接点
11. CString strData = _T("");
12. strData = xml.GetChildData();
13. if (strData=="luo")
14. {
15. xml.RemoveChildElem();
16. xml.Save("UserInfo.xml");
17. break;
18. }
19. }
20. }
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
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1. //UserInfo1.xml
2. <?xml version="1.0" encoding="UTF-8" ?>
3. <UserInfo>
4. <User UserID="UserID00" UserPwd="UserPwd00" UserLevel="158" />
5. <User UserID="UserID01" UserPwd="UserPwd01" UserLevel="162" />
6. <User UserID="UserID02" UserPwd="UserPwd02" UserLevel="165" />
7. <User UserID="UserID03" UserPwd="UserPwd03" UserLevel="168" />
8. <User UserID="UserID04" UserPwd="UserPwd04" UserLevel="171" />
9. <User UserID="UserID05" UserPwd="UserPwd05" UserLevel="175" />
10. <User UserID="UserID06" UserPwd="UserPwd06" UserLevel="178" />
11. <User UserID="UserID07" UserPwd="UserPwd07" UserLevel="181" />
12. <User UserID="UserID08" UserPwd="UserPwd08" UserLevel="184" />
13. <User UserID="UserID09" UserPwd="UserPwd09" UserLevel="188" />
14. </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>

7. 产生
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1. CString strID = _T("");
2. CString strPwd = _T("");
3. CMarkup xml;
4. xml.SetDoc("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
5. xml.AddElem("UserInfo");
6. xml.IntoElem();
7. for (int i=0; i<10; i++)
8. {
9. //产生一个随机数，作为权限
10. srand(UINT(time(NULL)+i));
11. int nLevel = rand()%256;
12. strID.Format("UserID%02d",i);
13. strPwd.Format("UserPwd%02d",i);
14. xml.AddElem("User");
15. xml.AddAttrib("UserID",strID);
16. xml.AddAttrib("UserPwd",strPwd);
17. xml.AddAttrib("UserLevel",nLevel);
18. }
19. xml.OutOfElem();
20. 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++) { //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
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1. CMarkup xml;
2. BOOL bLoad = false;
3. BOOL bFind = false;
4. bLoad = xml.Load("UserInfo1.xml");
5. if (bLoad)
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=="UserID00"&&strPwd=="UserPwd00")
17. {
18. bFind = true;
19. break;
20. }
21. }
22. }
23. if (bFind)
24. {
25. TRACE("\n---- find------\n");
26. }
27. else
28. {
29. TRACE("\n----no find------\n");
30. }
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
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1. CMarkup xml;
2. BOOL bLoad = false;
3. BOOL bFind = false;
4. bLoad = xml.Load("UserInfo1.xml");
5. if (bLoad)
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=="UserID00"&&strPwd=="UserPwd00")
17. {
18. bFind = true;
19. xml.SetChildAttrib("UserID",strID+CString("Modify"));
20. xml.Save("UserInfo1.xml");
21. break;
22. }
23. }
24. }
25. if (bFind)
26. {
27. TRACE("\n---- find------\n");
28. }
29. else
30. {
31. TRACE("\n----no find------\n");
32. }
<?xml version="1.0"?>

<BitComet Author="RnySmile" Version="0.1">

<Settings>

<LastSaveLocation>E:\电子书</LastSaveLocation>

<ListenPort>8497</ListenPort>

<GlobalMaxUploadRate>3072</GlobalMaxUploadRate>

<LastAdCacheClearDate>13104</LastAdCacheClearDate>

<LastTrackerKey>16547</LastTrackerKey>

<TotalUpload>303008</TotalUpload>

<TotalDownload>1180107</TotalDownload>

<LastExitTime>1132203124</LastExitTime>

</Settings>

</BitComet>

代码如下：

Code

VC使用MSXML解析XML文档

第一部分：DOM解析：

      概述：DOM解析将会把一个完整的XML文档读进来，生成一个结构树。这样会要把XML文档全部都加载到内在中。所以解析起来的速度会要慢一些。

    1、如何加载xml文件：

         //创建DOM,加载XML文档
         MSXML::IXMLDOMDocumentPtr pCommandDoc;
         pCommandDoc.CreateInstance(__uuidof(MSXML::DOMDocument));
          pCommandDoc->put_async(VARIANT_FALSE);
          pCommandDoc->put_validateOnParse(VARIANT_FALSE);
          pCommandDoc->put_resolveExternals(VARIANT_FALSE);
          pCommandDoc->put_preserveWhiteSpace(VARIANT_TRUE);
          pCommandDoc->load(file.GetBuffer(0));

     2、在XML文档中查找指定的结点：

      //找到
     MSXML::IXMLDOMNodePtr pRootNode=pCommandDoc->selectSingleNode("root/record");
       if (pRootNode==NULL)
     {
          return ;
      }

    3、得到XML文档中，结点的属性

        CString strTemp;
     MSXML::IXMLDOMNamedNodeMapPtr pAttrs = NULL;
     pRootNode->get_attributes(&pAttrs);
     if (pAttrs==NULL)
     {
          return;
     }
     MSXML::IXMLDOMNodePtr pRequestTypeAttr=pAttrs->getQualifiedItem("name","");
     _bstr_t strRequestType=pRequestTypeAttr->Gettext();
     strTemp=strRequestType.operator char *();

    4、得到结点的内容

    _bstr_t strVisiPort=pNode->Gettext();

    5、设置结点的内容

     HRESULT hr=pNode->put_text(_bstr_t(m_strGatewayPassword));

   6、设置一个属性内容
    IXMLDOMAttribute *pa=NULL;
    bstr = SysAllocString(L"属性1");
    pXMLDom->createAttribute(bstr,&pNode);
    var = VariantString(L"strin");
    pa->put_value(var);
    pRoot->setAttributeNode(pa, &pa1);


第二部分、如何使用SAX解析

        概述：SAX使用的是加载式的，将会把XML文档分断，加载到内存中。使用事件通知的方式，来表示找到结点。好像没有写文档的能力吧。它的速度要比DOM快不少。

       使用SAX的时候，就需要重载MSXML4.0中的一个接口ISAXContentHandler。

      有几个函数重载了之后，当找到了结点之后，就会回调这一些函数。
　　

对于这一种SAX解析的模式有一些不太了解如何应用。只是感觉这种方式可能不太好用于那种

对结构很重要的xml文档的解析。
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原文地址：https://www.cnblogs.com/ciey/p/1539760.html

1. 生成UserInfo.xml

2. 浏览特定元素

3. 修改

4. 添加

5. 删除

6. 查找

7. 产生

8. 查找

9. 修改