QSettings 读/写ini配置文件中的数组数据

以前项目中读写ini配置文件，都是以单个key-value形式进行读写，现在项目中又用到了需要把数据数组放置到ini配置文件中，这里结合Qt官方文档进行验证和总结。

配置文件中数据格式，存放三组数据，如图1所示：

图1 

1、写入数据

void WriteIni() {
  QList<Login> logins_list;
  Login log1;
  log1.userName = "test1";
  log1.password = "1111";
  logins_list.append(log1);

  Login log2;
  log2.userName = "test2";
  log2.password = "2222";
  logins_list.append(log2);
  Login log3;
  log3.userName = "test3";
  log3.password = "3333";
  logins_list.append(log3);

  QSettings settings("config.ini", QSettings::IniFormat);
  settings.beginWriteArray("BaseInfo");
  for (int i = 0; i < logins_list.size(); ++i) {
    settings.setArrayIndex(i);
    settings.setValue("password", logins_list.at(i).password);
    settings.setValue("userName", logins_list.at(i).userName);
  }
  settings.endArray();
}

2、读取数据

void ReadIni() {
  QList<Login> logins;

  QSettings settings("config.ini", QSettings::IniFormat);
  int size = settings.beginReadArray("BaseInfo");
  for (int i = 0; i < size; ++i) {
    settings.setArrayIndex(i);
    Login login;
    login.userName = settings.value("userName").toString();
    login.password = settings.value("password").toString();
    logins.append(login);
  }
  settings.endArray();

  for (int i = 0; i < logins.length(); ++i) {
    qDebug() << logins[i].userName;
    qDebug() << logins[i].password;
  }
}