QT 扫描附近WiFi 打印ssid和信号强度
时间: 2024-05-04 09:21:10 浏览: 7
以下是使用Qt编写的扫描附近WiFi并打印SSID和信号强度的示例代码:
```cpp
#include <QCoreApplication>
#include <QNetworkConfigurationManager>
#include <QNetworkSession>
#include <QList>
#include <QNetworkInterface>
#include <QProcess>
#include <QStringList>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QNetworkConfigurationManager manager;
if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
// Get saved network configuration
QSettings settings(QSettings::UserScope, QLatin1String("QtProject"));
settings.beginGroup(QLatin1String("QtNetwork"));
const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
settings.endGroup();
// If the saved network configuration is not currently discovered use the system default
QNetworkConfiguration config = manager.configurationFromIdentifier(id);
if ((config.state() & QNetworkConfiguration::Discovered) !=
QNetworkConfiguration::Discovered) {
config = manager.defaultConfiguration();
}
QNetworkSession* networkSession = new QNetworkSession(config, &a);
networkSession->open();
networkSession->waitForOpened();
}
QProcess process;
QStringList arguments;
arguments << "wlan0" << "scan";
process.start("iwlist", arguments);
process.waitForFinished(-1);
QString result = process.readAllStandardOutput();
QStringList ssidList;
QStringList signalStrengthList;
QStringList resultLines = result.split(QRegExp("\\n"));
foreach (QString line, resultLines) {
if (line.contains("ESSID")) {
QString ssid = line.split("\"")[1];
ssidList.append(ssid);
}
if (line.contains("Signal level")) {
QString signalStrength = line.split("=")[2];
signalStrengthList.append(signalStrength);
}
}
for (int i = 0; i < ssidList.size(); i++) {
qDebug() << "SSID: " << ssidList[i] << " Signal strength: " << signalStrengthList[i];
}
return a.exec();
}
```
该代码使用QNetworkConfigurationManager和QNetworkSession启动一个网络会话,用于扫描附近的WiFi网络。然后,使用QProcess调用iwlist命令扫描网络,将结果分割为行,并使用正则表达式从每行中提取SSID和信号强度。最后,打印每个SSID和信号强度对。