QDomDocument can't read the file content

[baluk]

Hi,

In my Qt mobile application I am trying to read the xml file with QDomDocument, but QDom is not bale to read the content from the file even the file was existed and has some data.



file = new QFile("file.xml");
if(!file->open(QIODevice::ReadWrite | QIODevice::Text))
{
exit(1);
}
QDomDocument doc;
if(!doc.setContent(file))
{
exit(1);
} else
{
......
}


After the if(!doc.setContent(file)) statement the program simply exited with status code 1. I would be grateful for any help.

Thank you,
Baluk

[Lykurg]

Then it is probably not well formed. Use all parameters of setContent and see what error message you get.

[baluk]

yes, I have now used all the parameters and am getting the error ""unexpected end of file" at line: 2 col: 1 ". But my xml file format is correct with no sysntax errors.

Thank you,
Baluk

[Lykurg]

Can you past the first 5 lines of your xml file.

[baluk]

Here is the xml data. this format is working fine when I tried in other application in Windows. Now I am making mobile application in Linux environment.


<?xml version="1.0" encoding="UTF-8"?>

<list>

<expenses>

<name>city</name>

<date>21/09/2010</date>
<price>4000</price>

</expenses>
</list>


Thank you,

Baluk

[Lykurg]

The only thing I can think of right know is, that it may be a problem with the encoding of your line breaks. Try to convert them to simple "\n" and try again of your device. (or remove all "\n" and "\r" for testing if that is the error.)

[baluk]

I am sorry but what do you mean by removing "\n" and "\r" from the file. I have tried placing the data in one line without any breaks but still not working.

Thank you,
Baluk

[nish]

what does file->readAll() return?

[wysota]

Are you sure you are using the correct file? The error suggests your file has only one line.

[baluk]

nothing returned to the byte array.

I have used this code


file = new QFile("file.xml");
QByteArray array;
array = file->readAll();
if(array.isNull())
{
qDebug() << "error" ;
exit(1);
}


program existed after the if statement.

[baluk]

Yes it has data. I am checking it every time I runthrough the program.

Thank you,

Baluk

[wysota]

You have to open the file before reading it.

[wysota]

I am checking it every time I runthrough the program.
How are you doing that?

[baluk]

Ya I did that , but getting the same result.



QByteArray array;
file = new QFile("expenses.xml");

if(!file->open(QIODevice::ReadWrite | QIODevice::Text))
{
exit(1);
}


array = file->readAll();
if(array.isNull())
{
qDebug() << "error" ;
exit(1);
}


Thank you,
Baluk

[baluk]

I am just checking the file if the file data is erased after I execute the program by some means.
Thank you,
Baluk

[wysota]

Please run the following code with your file:

#include <QtXml>
#include <QtCore>

int main(int argc, char **argv){
if(argc<2) return 1;
QFile file(argv[1]);
qDebug() << "File path:" << QFileInfo(file).absoluteFilePath();
qDebug() << "File exists:" << file.exists();
file.open(QFile::ReadOnly|QFile::Text);
qDebug() << "File open:" << file.isOpen();
QDomDocument dom;
QString error;
int line, int column;
if(dom.setContent(&file, &error, &line, &column)){
qDebug() << dom.toString(4);
} else {
qDebug() << "Error:" << error << "in line " << line << "column" << column;
}
return 0;
}

[nish]

can you attach your xml file here? if not confidential of course.

[baluk]

I run the code but and I get the error "../newxml-build-desktop/newxml exited with code 1".

Thank You,
Baluk.

[baluk]

Hi,

Ya sure, I am still in the beginning so no issue. Here is the file

Thank you,
Baluk

[wysota]

I run the code but and I get the error "../newxml-build-desktop/newxml exited with code 1".
Did you pass it the path to your file?

[baluk]

Hi Wysota,

Yes I run the code now I have figured out the problem after running your code. what my mistake is when I am creating the project in Qt crestor 4.7 I get two folders "NewXML"(projectname) and "newxml-build desktop" ( I don't know what it is for). I used to copy the file in the first one, but when i copy the file to the second one it is detecting the file.

I am extremely sorry to all of you.

Thank you,
Baluk

[tbscope]

The "*-build something" directory is the directory used to build the program. It contains the executable.
The other dir contains the source files.

You can change this behavior in Qt Creator.