从配置文件 qsetting 中删除 Key/Value 对

Question

我正在尝试在配置文件中搜索字符串，如果字符串匹配要删除键/值对。我从文件中获取了 qstringlist。据我尝试过的代码是

int main(int argc, char *argv[])
{
        QSettings* settings= new QSettings("/home/sidheshwar/Desktop/temp.txt", QSettings::IniFormat);

        settings->beginGroup("Profiles");
        const QStringList childKeys = settings->childKeys();

        QStringList Keys;
        QStringList values;
        QString user="db-host";
        QString tempUser;


        foreach (const QString &childKey, childKeys)
        {
            Keys << childKey;
            values << settings->value(childKey).toString();
        }

for(int i=0;i< Keys.length();i++){
    if(user == values.at(i)){
         qDebug() << " keys" << Keys[i] << endl;
tempUser=Keys[i];

    }
       qDebug() << " tempUser" << tempUser << endl;


}
      return 0;}

如何使用settings->remove(tempUser);

Answer 1

在下面的示例中，我将向您展示如何从处理配置的文件中删除数据的示例。

temp.ini执行前

[Profiles]
key1=db-host
key2=value2
key3=value3

main.cpp

#include <QCoreApplication>
#include <QSettings>
#include <QDebug>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QSettings* settings= new QSettings("temp.ini", QSettings::IniFormat);

    settings->beginGroup("Profiles");
    const QStringList childKeys = settings->childKeys();

    QStringList Keys;
    QStringList values;
    QString user="db-host";


    foreach (const QString &childKey, childKeys)
    {
        Keys << childKey;
        values << settings->value(childKey).toString();
    }

    for(int i=0;i< Keys.length();i++){
        if(user == values.at(i)){
            qDebug() << " keys" << Keys[i];
            settings->remove(Keys[i]);
        }
        qDebug() << Keys[i] << values.at(i);
    }


    return a.exec();
}

输出：

temp.ini执行后

[Profiles]
key2=value2
key3=value3

从配置文件 qsetting 中删除 Key/Value 对

Delete Key/Value Pair from configuration file qsetting

c++

qt

qsettings

qt5