QT DOM方式读取xml文件(QDomElement)

向右看齐 2022-08-10 14:46 327阅读 0赞

xml文件格式:

**\[html\]** [ view plain][view plain] [copy][view plain] [print][view plain] [?][view plain]

1.  <?xml version="1.0"?>
2.  <tree id="0">
3.  <item id="1" open="1" text="一级" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" >
4.  <item id="5" select="1" text="二级" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" ></item>
5.  <item id="6" text="空泡" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" ></item>
6.  </item>
7.  </tree>

<?xml version="1.0"?>
    <tree id="0">
    	<item id="1"  open="1"  text="一级" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" >
    		<item id="5"  select="1" text="二级" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" ></item>
    		<item id="6"  text="空泡" im0="leaf.gif" im1="folderOpen.gif" im2="folderClosed.gif" ></item>
    	</item>
    </tree>

头文件：

**\[cpp\]** [ view plain][view plain] [copy][view plain] [print][view plain] [?][view plain]

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

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

示例代码：

**\[cpp\]** [ view plain][view plain] [copy][view plain] [print][view plain] [?][view plain]

1.  //DOM方式查找在XML文件二级目录中是否有sItemName节点，有返回1，无返回0,错误返回-1；
2.  //sXmlFilePath:xml完整路径打的文件名（c:\\doc\\ss.xml)
3.  int CAppletGenerator::searchTaskMenuTreeItem(QString sXmlFilePath,QString sItemName))
4.  \{
5.  
6.  QFile file(sXmlFilePath);
7.  if (!file.open(QFile::ReadOnly | QFile::Text)) \{
8.  return \-1;
9.  \}
10. 
11. QDomDocument domDocument;
12. if (!domDocument.setContent(&file, true)) \{
13. file.close();
14. return \-1;
15. \}
16. QDomElement tree = domDocument.documentElement();
17. QDomElement firstItem = tree.firstChildElement();
18. 
19. //把全部二级item存放在list中
20. QDomNodeList secondItemlist = firstItem.childNodes();
21. 
22. for(int i = 0;i < secondItemlist.count();i++) \{
23. 
24. QDomNode node = secondItemlist.at(i);
25. QString textname = node.toElement().attribute("text");
26. if (textname == sItemName) \{
27. return 1;
28. \}
29. \}//end for
30. return 0;
31. \}

//DOM方式查找在XML文件二级目录中是否有sItemName节点，有返回1，无返回0,错误返回-1；
    //sXmlFilePath:xml完整路径打的文件名（c:\doc\ss.xml)
    int CAppletGenerator::searchTaskMenuTreeItem(QString sXmlFilePath,QString sItemName)) 
    {
    
    	QFile file(sXmlFilePath);
    	if (!file.open(QFile::ReadOnly | QFile::Text)) {
    		return -1;
    	}
    	
    	QDomDocument domDocument;
    	if (!domDocument.setContent(&file, true)) {
    		file.close();
    		return -1;
    	}
    	QDomElement tree      = domDocument.documentElement();
    	QDomElement firstItem = tree.firstChildElement();
    
    	//把全部二级item存放在list中
    	QDomNodeList secondItemlist = firstItem.childNodes();
    
    	for(int i = 0;i < secondItemlist.count();i++) {
    
    		QDomNode node    = secondItemlist.at(i);
    		QString textname = node.toElement().attribute("text");
    		if (textname == sItemName) {
    			return 1;
    		}
    	}//end for
    	return 0;
    }

原文地址：[http://blog.csdn.net/ymc0329/article/details/6710810][http_blog.csdn.net_ymc0329_article_details_6710810]

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