qt使用QDomDocument写xml(qt,xml,dom)

直接拷贝肯定是跑不通的,此处只介绍QDomDocument写xml的方法.

使用QDomDocument需要在 xxx.pro 中添加: qt += xml

没有xxx.pro 文件怎么办呢?

方法一: "开始" → "运行(R)" : cmd → "切换目录到工程目录" → 输入: "qmake -project" 回车运行将会生成.pro文件, 采用记事本就可以打开.pro文件.

方法二: "所有程序" → "Microsoft Visual Studio 2010(或:Microsoft Visual Studio 2005)" → "Visual Studio Tools" → "Visual Studio 命令提示(2010)(或:Visual Studio 命令提示(2005))" → "切换目录到工程目录" → 输入: "qmake -project" 回车运行将会生成.pro文件

设置项目属性:

"配置属性" → "C/C++" → "常规" → "附加包含目录"  $(QTDIR)\include\QtXml

"配置属性" → "链接器" → "输入" → "附加依赖项"  QtXmld4.lib(QtXml4.lib)

本文所使用的XML文件如下:

 192.168.8.100
 80
 /js45th/JDVN/JDVNExtendService/DVNExtendServiceTH.asmx
 
 
  getBlurayTaskList
  pubCallWebService
  updateBlurayTask
 

 

代码:

 

const QString QTSOAP_XML_DIR  = "";
const QString QTSOAP_XML_ROOT = "Qtsoap";
const QString QTSOAP_XML_HOST_NAME   = "Host";
const QString QTSOAP_XML_NAME_SPACE  = "Space";
const QString QTSOAP_XML_HOST_PORT   = "Port";
const QString QTSOAP_XML_HOST_POST   = "Post";
const QString QTSOAP_XML_ACTION_NAME = "Action";
const QString QTSOAP_XML_METHOD_NO   = "Id";
const QString QTSOAP_XML_METHOD_NAME = "Method";

 

private:
 QString m_HostName;
 QString m_HostPort;

 

#include
#include

#include

 

void CVxWebServiceHost::SaveWebServicesXml()
{
 QString vPath = QCoreApplication::applicationDirPath();
 vPath.replace(QString("/"),QString("\\"));;
 QString vXmlFileName = vPath + QTSOAP_XML_DIR + "BlurayTask.xml";

 QFile vXmlFile(vXmlFileName);
 if (!vXmlFile.open(QIODevice::ReadOnly | QFile::Text))
 {
  qDebug() << vXmlFileName;
  vXmlFile.close();
  return;
 }

 QDomDocument vXmlDoc;
 QString vErrStr;
 int vErrLine;
 int vErrColumn;
 if (!vXmlDoc.setContent(&vXmlFile, false, &vErrStr, &vErrLine, &vErrColumn))
 {
  qDebug() << vErrStr;
  vXmlFile.close();
  return;
 }
 vXmlFile.close();

 QDomElement vXmlRoot = vXmlDoc.documentElement();
 if (QString::compare(vXmlRoot.tagName(), QTSOAP_XML_ROOT, Qt::CaseInsensitive) != 0)
 {
  qDebug() << "XmlRoot : " + vXmlRoot.tagName();
  return;
 }
 else
 {
  WriteXmlRootElement(vXmlDoc, vXmlRoot);
 }

 QFile f(vXmlFileName);
 if (!f.open(QFile::WriteOnly | QFile::Text))
 {
  f.close();
  return;
 }
 QTextStream out(&f);
 vXmlDoc.save(out, 4);
 f.close();
}

 

void CVxWebServiceHost::WriteXmlRootElement(QDomDocument &aXmlDoc, QDomElement &element)
{
 QDomNode vChild = element.firstChild();
 while (!vChild.isNull())
 {
  QDomElement vElement;
  vElement = vChild.toElement();
  QString vtagName = vElement.tagName();
  if (QString::compare(vtagName, QTSOAP_XML_HOST_NAME, Qt::CaseInsensitive) == 0)
  {
   QDomElement vNewElement = aXmlDoc.createElement(vtagName);
   QDomText vValueText = aXmlDoc.createTextNode(m_HostName);
   vNewElement.appendChild(vValueText);
   element.replaceChild(vNewElement, vChild);
   vChild = vNewElement;
  }
  else if (QString::compare(vtagName, QTSOAP_XML_HOST_PORT, Qt::CaseInsensitive) == 0)
  {
   QDomElement vNewElement = aXmlDoc.createElement(vtagName);
   QDomText vValueText = aXmlDoc.createTextNode(m_HostPort);
   vNewElement.appendChild(vValueText);
   element.replaceChild(vNewElement, vChild);
   vChild = vNewElement;
  }
  vChild = vChild.nextSibling();
 }
}

 

值得注意的就是不能使用setNodeValue()方法来修改接点的值,经过测试不起作用,本文使用的接点替换方法.