qt QFile

helloworlddexiaobai

于 2022-03-01 15:02:45 发布

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文章标签： qt 开发语言

原文链接：https://blog.youkuaiyun.com/weixin_44161807/article/details/123205946?spm=1001.2014.3001.5502


QDir *dir = new QDir;
QDateTime currentTime = QDateTime::currentDateTime();
QString logName = "log_" + currentTime.toString("yyyyMMddhhmmss");
 
bool exist = dir.exists(QDir::currentPath().append("/log"));
 
if(!exist)
{
    dir.mkpath(QDir::currentPath().append("/log"));
    dir.setPath(QDir::currentPath().append("/log"));
}
 
QFile *file = new QFile(logName + ".txt");
dir.setCurrent(QDir::currentPath().append("/log"));
while (!file.open(QIODevice::WriteOnly | QIODevice::append));
{
    QTextStream txtOutput(file);
    txtOutput << str << endl;
    file.close();
}