用c ++或Qt格式化XML文件

Question

我有一个xml文件,其中输出没有格式化.这意味着所有输出都在一行中,但我想逐个标记地打破它.

例如 -

<?xml version="1.0" encoding="UTF-8" standalone="no" ?><Analyser>   <JointDetails>              <Details><StdThickness> T </StdThickness><Thickness_num> 0.032 </Thickness_num></Details>   </JointDetails></Analyser>

但我想这样做::

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Analyser>  
 <JointDetails>
   <Details>
<StdThickness> T </StdThickness>
<Thickness_num> 0.032 </Thickness_num>
</Details> 
  </JointDetails>
</Analyser>

请不要建议在写入XML文件时这样做,因为这个xml文件已经存在,但现在我必须按上面提到的格式化它.

提前致谢 .

Answer 1

使用a QXmlStreamReader并且QXmlStreamWriter应该做你想要的.QXmlStreamWriter::setAutoFormatting(true)将在不同的行上格式化XML并使用正确的缩进.有了QXmlStreamReader::isWhitespace()你可以过滤掉标签之间多余的空格.

QString xmlIn = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>"
                "<Analyser><JointDetails>              <Details><StdThickness>"
                " T </StdThickness><Thickness_num> 0.032 </Thickness_num>"
                "</Details>   </JointDetails></Analyser>";
QString xmlOut;

QXmlStreamReader reader(xmlIn);
QXmlStreamWriter writer(&xmlOut);
writer.setAutoFormatting(true);

while (!reader.atEnd()) {
    reader.readNext();
    if (!reader.isWhitespace()) {
        writer.writeCurrentToken(reader);
    }
}

qDebug() << xmlOut;

Answer 2

void format(void)
{
    QDomDocument input;

    QFile inFile("D:/input.xml");
    QFile outFile("D:/output.xml");

    inFile.open(inFile.Text | inFile.ReadOnly);
    outFile.open(outFile.Text | outFile.WriteOnly);

    input.setContent(&inFile);

    QDomDocument output(input);
    QTextStream stream(&outFile);
    output.save(stream, 2);
}