QSettings 读/写ini配置文件中的数组数据

Posted 2020-11-27 malinzhai

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

 1 void WriteIni() {
 2   QList<Login> logins_list;
 3   Login log1;
 4   log1.userName = "test1";
 5   log1.password = "1111";
 6   logins_list.append(log1);
 7 
 8   Login log2;
 9   log2.userName = "test2";
10   log2.password = "2222";
11   logins_list.append(log2);
12   Login log3;
13   log3.userName = "test3";
14   log3.password = "3333";
15   logins_list.append(log3);
16 
17   QSettings settings("config.ini", QSettings::IniFormat);
18   settings.beginWriteArray("BaseInfo");
19   for (int i = 0; i < logins_list.size(); ++i) {
20     settings.setArrayIndex(i);
21     settings.setValue("password", logins_list.at(i).password);
22     settings.setValue("userName", logins_list.at(i).userName);
23   }
24   settings.endArray();
25 }

 

2、读取数据

 1 void ReadIni() {
 2   QList<Login> logins;
 3 
 4   QSettings settings("config.ini", QSettings::IniFormat);
 5   int size = settings.beginReadArray("BaseInfo");
 6   for (int i = 0; i < size; ++i) {
 7     settings.setArrayIndex(i);
 8     Login login;
 9     login.userName = settings.value("userName").toString();
10     login.password = settings.value("password").toString();
11     logins.append(login);
12   }
13   settings.endArray();
14 
15   for (int i = 0; i < logins.length(); ++i) {
16     qDebug() << logins[i].userName;
17     qDebug() << logins[i].password;
18   }
19 }