QSettings读写ini配置文件

Qt中使用QSettings类读取ini后缀的配置文件非常简单，使用该类也可以很简单的操作Windows注册表。以前也使用过MFC中的WritePrivateProfileString()和GetPrivateProfileString()这两个API操作ini配置文件。

使用QSettings类读写ini配置文件的示例代码

相关代码如下：

// test.cpp

#include <QCoreApplication>

#include <QSettings>

#include <iostream>

#include <QDebug>

using namespace std;

int main(int argc, char *argv[])

{

QCoreApplication a(argc, argv);

QString fileName;

fileName = QCoreApplication::applicationDirPath();

fileName += "/config/net.ini";

QSettings settings(fileName, QSettings::IniFormat);

// 设置服务器的ip和端口信息

settings.beginGroup("server");

settings.setValue("ip", "192.168.1.120");

settings.setValue("port", 10001);

settings.endGroup();

// 设置数据库连接信息

settings.beginGroup("dbInfo");

settings.setValue("dbSource", "MySQL");

settings.setValue("host", "15.15.0.216");

settings.setValue("port", 9011);

settings.setValue("username", "root");

settings.setValue("password", "123456");

settings.setValue("dbName", "HBHazeDB");

settings.endGroup();

// 读取ini文件

settings.setIniCodec("UTF8"); // 设置编码方式 --->解析ini配置文件中的文字问题

// 获取server分组下的ip和端口信息

settings.beginGroup("server");

QString strIp = settings.value("ip").toString();

int port = settings.value("port").toInt();

settings.endGroup();

// 获取dbInfo分组下的数据库连接信息

settings.beginGroup("dbInfo");

QString dbSource = settings.value("dbSource").toString();

QString host = settings.value("host").toString();

int dbPort = settings.value("port").toInt();

QString username = settings.value("username").toString();

QString password = settings.value("password").toString();

QString dbName = settings.value("dbName").toString();

settings.endGroup();

qDebug() << "server info:[" << "ip:" << strIp << ",port:" << port << "]";

qDebug() << "dbInfo:[" << "dbSource:" << dbSource << ",host:" << host <<

",dbPort:" << dbPort << ",username:" << username

<< ",password:" << password << ",dbName:" << dbName << "]";

return a.exec();

}

对应的net.ini配置文件如下：

[server]

ip=192.168.1.120

port=10001

[dbInfo]

dbSource=MySQL

host=15.15.0.216

port=9011

username=root

password=123456

dbName=HBHazeDB

参考文章

1、 QSettings读写注冊表、配置文件

2、QSettings官方文档