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
#include
#include
#include
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