如何扫描计算机的端口，获取指定数量的空闲端口？

[沉珂]

同上，谢谢

[ppzine]

最简单的办法是建议一个socket 连接，然后给这个连接绑上不同的端口上,来个for,

[iwlk]

同意楼上的

[cold_blooded]

public class Test2{
public static void main(String[] args) {
String host = "localhost";
int host_count = 10;
int j = 1;

for (int i = 8010; i > 7990; i--) {
if (!connect(host, i)) {
int count = j++;
if (count > host_count) {
return;
}
System.out.println("空闲端口" + count + ":[" + i + "]");
}
}
}

public static boolean connect(String host, int port) {
try {
Socket socket = new Socket(host, port);
boolean success = socket.isConnected();
if (success) {
socket.close();
}
return success;
} catch (UnknownHostException e) {
return false;
} catch (IOException e) {
return false;
}
}
}

[skylovers]

socketServer吧?socket我记得不能bind本地的固定端口.