QT DOM方式写入xml文件

红太狼 2022-08-10 14:46 213阅读 0赞

依赖的头文件：

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1.  \#include <QFile> 
2.  \#include <QString>
3.  \#include <QtXml>
4.  \#include <QDomDocument>
5.  \#include <QDateTime>

#include <QFile> 
    #include <QString>
    #include <QtXml>
    #include <QDomDocument>
    #include <QDateTime>

示例代码：

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1.  //写xml操作。sXmlFilePath：要写入的xml文件路径
2.  int CAppletGenerator::addTaskMenuTreeItem(QString sXmlFilePath)
3.  \{
4.  QFile file(sXmlFilePath);
5.  if (!file.open(QFile::ReadOnly | QFile::Text)) \{
6.  return \-1;
7.  \}
8.  
9.  QDomDocument domDocument;
10. if (!domDocument.setContent(&file, true)) \{
11. file.close();
12. return \-1;
13. \}
14. QDomElement tree = domDocument.documentElement();
15. QDomElement firstItem = tree.firstChildElement();
16. 
17. //在firstitem上添加一个节点
18. QDomElement secondItem = domDocument.createElement("item");
19. 
20. //获取当前时间，用于节点的唯一性id
21. QDateTime dt;
22. QTime time;
23. QDate date;
24. dt.setTime(time.currentTime());
25. dt.setDate(date.currentDate());
26. QString currentDate = dt.toString("yyyyMMddhhmmss");
27. 
28. //为节点添加属性
29. secondItem.setAttribute("id",currentDate);
30. secondItem.setAttribute("select","1");
31. secondItem.setAttribute("text","节点");
32. 
33. //添加元素节点到父节点
34. firstItem.appendChild(secondItem);
35. file.close();
36. 
37. QFile fileModify(sXmlFilePath);
38. if (!fileModify.open(QFile::WriteOnly | QFile::Text))\{
39. return \-1;
40. \}
41. 
42. //核心代码：Dom方式写xml文件
43. QTextStream out(&fileModify);
44. domDocument.save(out,4);
45. fileModify.close();
46. return 0;
47. 
48. \}

原文地址：[http://blog.csdn.net/ymc0329/article/details/6709223][http_blog.csdn.net_ymc0329_article_details_6709223]

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