【QT】续写文本存储到文件

续写文本到文件

使用标记QFile::WriteOnly| QIODevice::Append打开文件

QString strConfigFile = "C:\\Users\\xiaosheng\\Desktop\\Log.txt";
QFile file1(strConfigFile);
QString strLog2;
strLog2 += "strKeyId" + "\n";
if (file1.open(QFile::WriteOnly| QIODevice::Append))
{
	QString strTempXml = strLog2;
	QTextStream out(&file1);
	out.setCodec("UTF-8");
	out << strTempXml;
	file1.close();
}

覆盖文本到文件

使用标记QFile::WriteOnly打开文件

QString strConfigFile = "C:\\Users\\xiaosheng\\Desktop\\Log.txt";
QFile file1(strConfigFile);
QString strLog2;
strLog2 += "strKeyId" + "\n";
if (file1.open(QFile::WriteOnly))
{
	QString strTempXml = strLog2;
	QTextStream out(&file1);
	out.setCodec("UTF-8");
	out << strTempXml;
	file1.close();
}