ini文件保存数据库参数，密码使用Base64加密。

生成的config.ini内容如下：

[database]
ip=127.0.0.1
port=3306
user=root
passwd=d2p5MTIz

[notice]
version=v1.0
time=2021-03-03 18:23:47

 

程序Demo如下

 

mainwindow.h

 1 #ifndef MAINWINDOW_H
 2 #define MAINWINDOW_H
 3 
 4 #include <QMainWindow>
 5 #include <QSettings>
 6 #include <QtDebug>
 7 #include <QDateTime>
 8 
 9 QT_BEGIN_NAMESPACE
10 namespace Ui { class MainWindow; }
11 QT_END_NAMESPACE
12 
13 class MainWindow : public QMainWindow
14 {
15     Q_OBJECT
16 
17 public:
18     MainWindow(QWidget *parent = nullptr);
19     ~MainWindow();
20 
21     void write_congig_ini(QString ip,QString port,QString user,QString passwd);
22     void read_config_ini(QString &ip,QString &port,QString &user,QString &passwd);
23 
24 
25 private slots:
26     void on_pushButton_clicked();
27     void on_pushButton_2_clicked();
28 
29 private:
30     Ui::MainWindow *ui;
31 
32     QString ip;
33     QString port;
34     QString user;
35     QString passwd;
36 
37 };
38 #endif // MAINWINDOW_H

 

mainwindow.cpp 

 1 #include "mainwindow.h"
 2 #include "ui_mainwindow.h"
 3 
 4 MainWindow::MainWindow(QWidget *parent)
 5     : QMainWindow(parent)
 6     , ui(new Ui::MainWindow)
 7 {
 8     ui->setupUi(this);
 9 }
10 
11 MainWindow::~MainWindow()
12 {
13     delete ui;
14 }
15 
16 void MainWindow::write_congig_ini(QString ip,QString port,QString user,QString passwd){
17 
18     QSettings *config = new QSettings("config.ini",QSettings::IniFormat);
19 
20     config->setValue("/database/ip",ip);
21     config->setValue("/database/port",port);
22     config->setValue("/database/user",user);
23     config->setValue("/database/passwd",QString::fromUtf8(passwd.toUtf8().toBase64()));
24 
25     config->setValue("/notice/version","v1.0");
26     config->setValue("/notice/time",QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"));
27 
28     config->deleteLater();
29 }
30 
31 void MainWindow::read_config_ini(QString &ip,QString &port,QString &user,QString &passwd){
32 
33     QSettings *config = new QSettings("config.ini",QSettings::IniFormat);
34 
35     ip = config->value("/database/ip").toString();
36     port =  config->value("/database/port").toString();
37     user =  config->value("/database/user").toString();
38     passwd = QByteArray::fromBase64(config->value("/database/passwd").toString().toUtf8());
39 
40     QString version = config->value("/notice/version").toString();
41     QString time =  config->value("/notice/time").toString();
42 
43     config->deleteLater();
44 
45 }
46 
47 void MainWindow::on_pushButton_clicked()
48 {
49     write_congig_ini("127.0.0.1","3306","root","wjy123");
50 
51 }
52 
53 void MainWindow::on_pushButton_2_clicked()
54 {
55     read_config_ini(ip,port,user,passwd);
56 }