如何在爪哇、C、C和C中找到无线网络列表(SSID)?

对于C,请查看 Managed Wifi API ,它是 Native Wifi API 随Windows XP SP2及更高版本提供。

我没有测试过这段代码,但是在查看托管WiFiAPI示例代码时,应该列出可用的SSID。

WlanClient client = new WlanClient();
foreach ( WlanClient.WlanInterface wlanIface in client.Interfaces )
{
    // Lists all available networks
    Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList( 0 );
    foreach ( Wlan.WlanAvailableNetwork network in networks )
    {                     
        Console.WriteLine( "Found network with SSID {0}.", GetStringForSSID(network.dot11Ssid));
    }
}

static string GetStringForSSID(Wlan.Dot11Ssid ssid)
{
    return Encoding.ASCII.GetString( ssid.SSID, 0, (int) ssid.SSIDLength );
}

ArrayList<String>ssids=new ArrayList<String>();
ArrayList<String>signals=new ArrayList<String>();
ProcessBuilder builder = new ProcessBuilder(
        "cmd.exe", "/c", "netsh wlan show all");
builder.redirectErrorStream(true);
Process p = builder.start();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while (true) {
    line = r.readLine();
    if (line.contains("SSID")||line.contains("Signal")){
        if(!line.contains("BSSID"))
            if(line.contains("SSID")&&!line.contains("name")&&!line.contains("SSIDs"))
            {
                line=line.substring(8);
                ssids.add(line);

            }
            if(line.contains("Signal"))
            {
                line=line.substring(30);
                signals.add(line);

            }

            if(signals.size()==7)
            {
                break;
            }

    }

}
for (int i=1;i<ssids.size();i++)
{
    System.out.println("SSID name == "+ssids.get(i)+"   and its signal == "+signals.get(i)  );
}

嗯,您没有指定操作系统,所以对于Linux,我建议Jean Torrillhes为Linux提供无线工具( http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html )。iwlist()命令显示了许多关于可用网络的信息。源代码是用C编写的。另一种方法是用C编写自己的代码,使用libpcap捕获信标帧并从中提取ssid(仅在监视模式下)。我还没有测试过我的嗅探代码,所以我不会把它粘贴到这里,但这是非常简单的工作。