【From】 https://www.cnblogs.com/huluyisheng/p/6867370.html
InetAddress的构造函数不是公开的(public),所以需要通过它提供的静态方法来获取,有以下的方法:
static InetAddress[] getAllByName(String host)
static InetAddress getByAddress(byte[] addr)
static InetAddress getByAddress(String host,byte[] addr)
static InetAddress getByName(String host)
static InetAddress getLocalHost()
java获取本地ip信息时getLocalHost(),匹配C:\Windows\System32\drivers\hosts中的数据,如果是windows系统可以直接调用getLocalHost()获得。但是如果是多个网口取值的数据未知。
但是linux系统则会找到localhost.localdomain:127.0.0.1
所以想获得真正的ip4地址,需要从网口的地址进行筛选:
public static InetAddress getInetAddress() throws SocketException{ Enumeration<NetworkInterface> allNetInterfaces = NetworkInterface.getNetworkInterfaces(); InetAddress ipHost = null; while (allNetInterfaces.hasMoreElements()) { NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement(); Enumeration<InetAddress> addresses = netInterface.getInetAddresses(); while (addresses.hasMoreElements()) { ipHost = (InetAddress) addresses.nextElement(); if (ipHost != null && ipHost instanceof Inet4Address) { System.out.println("本机的HOSTIP = " + ipHost.getHostAddress()); System.out.println("本机的HOSTNAME = " + ipHost.getHostName()); return ipHost; } } } return ipHost; }
问题来了:
如果主机有多个ipv4地址该如何处理?
原文地址:https://www.cnblogs.com/pekkle/p/9784953.html
时间: 2024-10-13 10:43:14