QDomDocumen save method doesn't work!

[xiongxiongchuan]

i want to create a file and write some xml code in it use the below code like this ,but it don't save anything ,anyone could help me

QString xmlAddress=projectAddress;
	xmlAddress+="//";
	xmlAddress+=projectName;
	xmlAddress+=".drdp";//项目的后缀名为.drdp
 
 
	QDomDocument doc;
	QDomElement project=doc.createElement("Project");
	QDomElement projectInformation=doc.createElement("ProjectInformation");
	QDomElement createTime=doc.createElement("CreateTime");
	QDomElement name=doc.createElement("Name");
	QDomElement author=doc.createElement("Author");
	QDomElement description=doc.createElement("Description");
	QDomElement unit=doc.createElement("Unit");
	QDomElement type=doc.createElement("Type");
 
 
	QDomElement files=doc.createElement("Files");
	QDomElement chart2d=doc.createElement("Chart2D");
	QDomElement chart3d=doc.createElement("Chart3D");
	QDomElement data=doc.createElement("Data");
 
	QDomElement databases=doc.createElement("Databases");
 
 
	doc.appendChild(project);
 
 
	project.appendChild(projectInformation);
	project.appendChild(files);
	project.appendChild(databases);
 
	projectInformation.appendChild(createTime);
	projectInformation.appendChild(name);
	projectInformation.appendChild(author);
	projectInformation.appendChild(description);
	projectInformation.appendChild(unit);
	projectInformation.appendChild(type);
 
 
	QDomText txtCreateTime=doc.createTextNode(projectCreateTime.toString(Qt::DateFormat::ISODate));
	QDomText txtAuthor=doc.createTextNode(projectAuthor);
	QDomText txtName=doc.createTextNode(projectName);
	QDomText txtDescription=doc.createTextNode(projectDescription);
	QDomText txtType=doc.createTextNode("TextType");
	QDomText txtUnit=doc.createTextNode("TextUnit");
 
	createTime.appendChild(txtCreateTime);
	name.appendChild(txtName);
	author.appendChild(txtAuthor);
	description.appendChild(txtDescription);
	unit.appendChild(txtUnit);
	type.appendChild(txtType);
	QDomNode xmlNode = doc.createProcessingInstruction("xml","version=\"1.0\" encoding=\"utf-8\"");
 
	doc.insertBefore(xmlNode, doc.firstChild());
 
 
 
 
 
 
	QTextStream out(&xmlAddress);
 
 
 
 
 
	doc.save(out,4);

QString xmlAddress=projectAddress;
	xmlAddress+="//";
	xmlAddress+=projectName;
	xmlAddress+=".drdp";//项目的后缀名为.drdp


	QDomDocument doc;
	QDomElement project=doc.createElement("Project");
	QDomElement projectInformation=doc.createElement("ProjectInformation");
	QDomElement createTime=doc.createElement("CreateTime");
	QDomElement name=doc.createElement("Name");
	QDomElement author=doc.createElement("Author");
	QDomElement description=doc.createElement("Description");
	QDomElement unit=doc.createElement("Unit");
	QDomElement type=doc.createElement("Type");


	QDomElement files=doc.createElement("Files");
	QDomElement chart2d=doc.createElement("Chart2D");
	QDomElement chart3d=doc.createElement("Chart3D");
	QDomElement data=doc.createElement("Data");

	QDomElement databases=doc.createElement("Databases");


	doc.appendChild(project);
	

	project.appendChild(projectInformation);
	project.appendChild(files);
	project.appendChild(databases);

	projectInformation.appendChild(createTime);
	projectInformation.appendChild(name);
	projectInformation.appendChild(author);
	projectInformation.appendChild(description);
	projectInformation.appendChild(unit);
	projectInformation.appendChild(type);


	QDomText txtCreateTime=doc.createTextNode(projectCreateTime.toString(Qt::DateFormat::ISODate));
	QDomText txtAuthor=doc.createTextNode(projectAuthor);
	QDomText txtName=doc.createTextNode(projectName);
	QDomText txtDescription=doc.createTextNode(projectDescription);
	QDomText txtType=doc.createTextNode("TextType");
	QDomText txtUnit=doc.createTextNode("TextUnit");

	createTime.appendChild(txtCreateTime);
	name.appendChild(txtName);
	author.appendChild(txtAuthor);
	description.appendChild(txtDescription);
	unit.appendChild(txtUnit);
	type.appendChild(txtType);
	QDomNode xmlNode = doc.createProcessingInstruction("xml","version=\"1.0\" encoding=\"utf-8\"");

	doc.insertBefore(xmlNode, doc.firstChild());

	




	QTextStream out(&xmlAddress);

	



	doc.save(out,4);

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[Lykurg]

Well, it is perfectly saved, but not where you expect it! It is saved in your QString xmlAddress. If you want to save it to a file, specified by xmlAddress, you have to use QFile first!


And did you noticed, that you have used the wrong tags to indicate that your text is c++ code? Please use the [code] tags next time, which makes your code much more readable.

[xiongxiongchuan]

thank you i have correct this probrem

Well, it is perfectly saved, but not where you expect it! It is saved in your QString xmlAddress. If you want to save it to a file, specified by xmlAddress, you have to use QFile first!


And did you noticed, that you have used the wrong tags to indicate that your text is c++ code? Please use the [code] tags next time, which makes your code much more readable.