Enumeration<NetworkInterface>
netInterfaces
=
null
try
{
netInterfaces
=
NetworkInterface.getNetworkInterfaces()
while
(netInterfaces.hasMoreElements())
{
NetworkInterface
ni
=
netInterfaces.nextElement()
System.out.println("DisplayName:"
+
ni.getDisplayName())
System.out.println("Name:"
+
ni.getName())
Enumeration<InetAddress>
ips
=
ni.getInetAddresses()
while
(ips.hasMoreElements())
{
System.out.println("IP:"
+
ips.nextElement().getHostAddress())
ipTemp=
ni.getInetAddresses().nextElement().getHostAddress()
if(ipTemp!="127.0.0.1"
&&
!"127.0.0.1".equals(ipTemp))
{
ip=ipTemp
}
}
}
}catch(Exception
ee)
{
ee.printStackTrace()
}
第二种：也是本机的：
InetAddress
addr
=
InetAddress.getLocalHost()
ip=addr.getHostAddress().toString()//获得本机IP
方法如下：方法一，使用CMD命令：
public static String getLocalIPForCMD(){
StringBuilder sb = new StringBuilder()
String command = "cmd.exe /c ipconfig | findstr IPv4"
try {
Process p = Runtime.getRuntime().exec(command)
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()))
String line = null
while((line = br.readLine()) != null){
line = line.substring(line.lastIndexOf(":")+2,line.length())
sb.append(line)
}
br.close()
p.destroy()
} catch (IOException e) {
e.printStackTrace()
}
return sb.toString()
}
方法二，使用Java方法：
public static String getLocalIPForJava(){
StringBuilder sb = new StringBuilder()
try {
Enumeration<NetworkInterface>en = NetworkInterface.getNetworkInterfaces()
while (en.hasMoreElements()) {
NetworkInterface intf = (NetworkInterface) en.nextElement()
Enumeration<InetAddress>enumIpAddr = intf.getInetAddresses()
while (enumIpAddr.hasMoreElements()) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement()
if (!inetAddress.isLoopbackAddress() &&!inetAddress.isLinkLocalAddress()
&&inetAddress.isSiteLocalAddress()) {
sb.append(inetAddress.getHostAddress().toString()+"\n")
}
}
}
} catch (SocketException e) { }
return sb.toString()
}
public void PingAll() throws Exception{//首先得到本机的IP，得到网段
InetAddress host = InetAddress.getLocalHost()
String hostAddress = host.getHostAddress()
int k=0
k=hostAddress.lastIndexOf(".")
String ss = hostAddress.substring(0,k+1)
for(int i=1i <=255i++){ //对所有局域网Ip
String iip=ss+i
Ping(iip)
}
