如何使用 Java 获取在同一网络(子网)中连接的 IP 列表 [英] How to get a list of IP connected in same network (subnet) using Java
问题描述
如何获取使用 Java 连接到同一子网的设备的 IP 地址列表?
How do I get list of IP addresses for devices connected to my same subnet using Java?
推荐答案
当您网络上的主机对 ICMP 包 (ping) (>JDK 5) 做出反应时,这应该可以工作:
this should work when the hosts on your network react to ICMP packages (ping) (>JDK 5):
public void checkHosts(String subnet){
int timeout=1000;
for (int i=1;i<255;i++){
String host=subnet + "." + i;
if (InetAddress.getByName(host).isReachable(timeout)){
System.out.println(host + " is reachable");
}
}
}
像这样调用子网 (192.168.0.1-254) 的方法:
invoke the method for a subnet (192.168.0.1-254) like this:
checkHosts("192.168.0");
没有测试它,但应该像这样工作.显然这只是检查ip地址最后一个字节的254台主机...
didnt test it but should work kinda like this. Obviously this only checks the 254 hosts in the last byte of the ip address...
检查:
http://download-llnw.oracle.com/javase/6/docs/api/java/net/InetAddress.html#isReachable%28int%29http://blog.taragana.com/index.php/archive/how-to-do-icmp-ping-in-java-jdk-15-and-above/
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