InetAddress相关笔记

InetAddress的实例对象包含以数字形式保存的IP地址，同时还可能包含主机名（如果使用主机名来获取InetAddress的实例，或者使用数字来构造，并且启用了反向主机名解析的功能）。InetAddress类提供了将主机名解析为IP地址（或反之）的方法。其生成InetAddress对象的方法（getLocalHost()，getByName()，getAllByName()，getByAddress()等）

 1 import java.net.UnknownHostException;
 2
 3 /*
 4  * To change this license header, choose License Headers in Project Properties.
 5  * To change this template file, choose Tools | Templates
 6  * and open the template in the editor.
 7  */
 8 import java.net.*;
 9 import java.util.*;
10 /**
11  *
12  * @author silianbo
13  */
14 public class InetAddressDemo  {
15     public static void main(String[] args) throws UnknownHostException{
16         //此处添加相关的代码段
17
18     }
19
20 }

获得本地主机信息

1 InetAddress localAddress = InetAddress.getLocalHost();
2         System.out.println(localAddress);

View Code

指定域名主机的信息

String host = "www.google.com";InetAddress address = InetAddress.getByName(host);System.out.println(address);

根据指定域名获得所有信息

String host = "www.baidu.com";     //注意获得的所有IP地址InetAddress [] addresses = InetAddress.getAllByName(host);for(InetAddress address : addresses)System.out.println(address);

比较根据localhost和计算机名获得信息的不同

String host = "localhost";    //更改localhost为你现在所使用计算机名，查看不同InetAddress ia = InetAddress.getByName (host);System.out.println ("Canonical Host Name = " + ia.getCanonicalHostName ());System.out.println ("Host Address = " + ia.getHostAddress ());System.out.println ("Host Name = " + ia.getHostName ());System.out.println ("Is Loopback Address = " + ia.isLoopbackAddress ());

获得本地主机所有IP地址

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());  }  }  } catch (Exception e) {  e.printStackTrace();  }

run:
DisplayName:Software Loopback Interface 1
Name:lo
IP:127.0.0.1
IP:0:0:0:0:0:0:0:1
DisplayName:Microsoft 内核调试网络适配器
Name:eth0
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter
Name:wlan0
IP:fe80:0:0:0:21c7:474b:810b:997d%wlan0
DisplayName:Realtek PCIe GBE 系列控制器
Name:eth1
IP:10.128.195.6
IP:fe80:0:0:0:21f7:f5fa:71a7:e3d1%eth1
DisplayName:Bluetooth 设备(个人区域网)
Name:eth2
IP:fe80:0:0:0:5d4a:7ad0:3b6f:29af%eth2
DisplayName:Bluetooth 设备(RFCOMM 协议 TDI)
Name:net0
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器
Name:wlan1
DisplayName:Microsoft ISATAP Adapter
Name:net1
IP:fe80:0:0:0:0:5efe:a80:c306%net1
DisplayName:Teredo Tunneling Pseudo-Interface
Name:net2
IP:2001:0:9d38:90d7:149e:221a:8adf:279a
IP:fe80:0:0:0:149e:221a:8adf:279a%net2
DisplayName:WAN 微型端口(SSTP)
Name:net3
DisplayName:WAN 微型端口(L2TP)
Name:net4
DisplayName:WAN 微型端口(PPPOE)
Name:ppp0
DisplayName:WAN 微型端口(PPTP)
Name:net5
DisplayName:WAN Miniport (IKEv2)
Name:net6
DisplayName:WAN 微型端口(IP)
Name:eth3
DisplayName:WAN 微型端口(IPv6)
Name:eth4
DisplayName:WAN 微型端口(网络监视器)
Name:eth5
DisplayName:RAS 同步适配器
Name:ppp1
DisplayName:Microsoft ISATAP Adapter #2
Name:net7
IP:fe80:0:0:0:0:5efe:c0a8:3401%net7
DisplayName:Microsoft ISATAP Adapter #3
Name:net8
IP:fe80:0:0:0:0:5efe:c0a8:c701%net8
DisplayName:Microsoft 托管网络虚拟适配器
Name:wlan2
IP:fe80:0:0:0:6c29:b7c6:d687:691c%wlan2
DisplayName:VMware Virtual Ethernet Adapter for VMnet1
Name:eth6
IP:192.168.52.1
IP:fe80:0:0:0:20d1:2461:f68:f35%eth6
DisplayName:VMware Virtual Ethernet Adapter for VMnet8
Name:eth7
IP:192.168.199.1
IP:fe80:0:0:0:1859:4837:4f9e:32dd%eth7
DisplayName:Microsoft ISATAP Adapter #4
Name:net9
IP:fe80:0:0:0:0:5efe:a0b:b6ed%net9
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #2
Name:wlan3
DisplayName:Microsoft ISATAP Adapter #5
Name:net10
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #3
Name:wlan4
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4
Name:wlan5
IP:fe80:0:0:0:95a5:ed42:ab58:12c4%wlan5
DisplayName:Realtek PCIe GBE 系列控制器-WFP Native MAC Layer LightWeight Filter-0000
Name:eth8
DisplayName:Realtek PCIe GBE 系列控制器-Liebao Wifi NAT Driver-0000
Name:eth9
DisplayName:Realtek PCIe GBE 系列控制器-PPPoe Performance Enhancer-0000
Name:eth10
DisplayName:Realtek PCIe GBE 系列控制器-QoS Packet Scheduler-0000
Name:eth11
DisplayName:Realtek PCIe GBE 系列控制器-WFP 802.3 MAC Layer LightWeight Filter-0000
Name:eth12
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-WFP Native MAC Layer LightWeight Filter-0000
Name:wlan6
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-Virtual WiFi Filter Driver-0000
Name:wlan7
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-Native WiFi Filter Driver-0000
Name:wlan8
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-Liebao Wifi NAT Driver-0000
Name:wlan9
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-PPPoe Performance Enhancer-0000
Name:wlan10
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-QoS Packet Scheduler-0000
Name:wlan11
DisplayName:Qualcomm Atheros AR9485WB-EG Wireless Network Adapter-WFP 802.3 MAC Layer LightWeight Filter-0000
Name:wlan12
DisplayName:Microsoft 托管网络虚拟适配器-WFP Native MAC Layer LightWeight Filter-0000
Name:wlan13
DisplayName:Microsoft 托管网络虚拟适配器-Native WiFi Filter Driver-0000
Name:wlan14
DisplayName:Microsoft 托管网络虚拟适配器-Liebao Wifi NAT Driver-0000
Name:wlan15
DisplayName:Microsoft 托管网络虚拟适配器-PPPoe Performance Enhancer-0000
Name:wlan16
DisplayName:Microsoft 托管网络虚拟适配器-QoS Packet Scheduler-0000
Name:wlan17
DisplayName:Microsoft 托管网络虚拟适配器-WFP 802.3 MAC Layer LightWeight Filter-0000
Name:wlan18
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-WFP Native MAC Layer LightWeight Filter-0000
Name:wlan19
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-Native WiFi Filter Driver-0000
Name:wlan20
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-Liebao Wifi NAT Driver-0000
Name:wlan21
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-PPPoe Performance Enhancer-0000
Name:wlan22
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-QoS Packet Scheduler-0000
Name:wlan23
DisplayName:Microsoft Wi-Fi Direct 虚拟适配器 #4-WFP 802.3 MAC Layer LightWeight Filter-0000
Name:wlan24
DisplayName:WAN 微型端口(IP)-WFP Native MAC Layer LightWeight Filter-0000
Name:eth13
DisplayName:WAN 微型端口(IP)-Liebao Wifi NAT Driver-0000
Name:eth14
DisplayName:WAN 微型端口(IP)-PPPoe Performance Enhancer-0000
Name:eth15
DisplayName:WAN 微型端口(IP)-QoS Packet Scheduler-0000
Name:eth16
DisplayName:WAN 微型端口(IPv6)-WFP Native MAC Layer LightWeight Filter-0000
Name:eth17
DisplayName:WAN 微型端口(IPv6)-Liebao Wifi NAT Driver-0000
Name:eth18
DisplayName:WAN 微型端口(IPv6)-PPPoe Performance Enhancer-0000
Name:eth19
DisplayName:WAN 微型端口(网络监视器)-WFP Native MAC Layer LightWeight Filter-0000
Name:eth20
DisplayName:WAN 微型端口(IPv6)-QoS Packet Scheduler-0000
Name:eth21
DisplayName:WAN 微型端口(网络监视器)-Liebao Wifi NAT Driver-0000
Name:eth22
DisplayName:WAN 微型端口(网络监视器)-PPPoe Performance Enhancer-0000
Name:eth23
DisplayName:WAN 微型端口(网络监视器)-QoS Packet Scheduler-0000
Name:eth24
DisplayName:ChinaNetSNWide
Name:ppp2
IP:10.11.182.237
BUILD SUCCESSFUL (total time: 1 second)

根据IP地址构造InetAddress

byte [] ip = new byte[] { (byte) 202, (byte) 117, (byte)128 , 7};  //可以更改数值超过255InetAddress address1 = InetAddress.getByAddress(ip);InetAddress address2 = InetAddress.getByAddress("www.baidu.com", ip);System.out.println(address1);System.out.println(address2);

利用InetAddress.getByName()按计算机名称获局域网中所有开机主机名称和IP

  for (int i = 0; i <= 100; i++) {int s = i + 1;String host = "192.168.52." + s;try {InetAddress a = InetAddress.getByName(host);System.out.println("The IP is:" + a.getHostAddress());System.out.println("The localhost  is:" + a.getHostName());} catch (UnknownHostException e) {e.printStackTrace();}}

利用InetAddress.getByName()按IP地址获得指定网络段所有开机主机名称/域名和IP地址，结合方法isReachable()

for (int i = 0; i <= 155; i++) {int s = i + 100;String host = "192.168.52." + s;try {InetAddress a = InetAddress.getByName(host);System.out.println("The IP is:" + a.getHostAddress());System.out.println("The localhost  is:" + a.getHostName());a.isReachable(3000);} catch (UnknownHostException e) {}}

InetAddress()　　相关的操作就这么多！

转载于:https://www.cnblogs.com/silianbo/p/4634247.html

InetAddress相关笔记相关推荐

SQL常用用法相关笔记
SQL常用用法相关笔记 1).----CAST和CONVERT的用法 SQL中的cast和convert都是用来将一种数据类型的表达式转换为另一种数据类型的表达式. CAST和CONVERT提供相似的 ...
cscope 相关笔记
cscope 相关笔记 cscope 可以用来解析 c 代码,生成引用信息,用户通过查询引用信息来在代码中进行跳转. 使用步骤如下: find 寻找待 index 的文件,并将文件列表写入到 csco ...
windows相关笔记
windows相关笔记前言一. 彻底关闭windows10自动更新二.开机启动批处理禁用win10更新服务三.解决win和(linux或mac)双系统时间不同步问题四.添加环境变量示例ope ...
矩阵的病态性研究相关笔记
矩阵的病态性研究相关笔记一.概念定义 1.1 良态VS病态病态问题(ill-conditioned problem)是指输出结果相对于输入非常敏感,输入数据哪怕是极少(或者极微妙)的噪声也会导致输 ...
微环谐振器MRR相关笔记
微环谐振器MRR相关笔记这是第一次将自己的笔记上传到博客上,直接全部复制进来好像就成一整个图片了,下次我再排版好一些. 这些是我在科研的途中整理出来的资料,有些直接贴图,有些计算是自己手写的.
[笔记] 最大权闭合子图最大流最小割相关笔记
最大权闭合子图对于最大权闭合子图的理论学习并且补充一部分网络流的笔记有向图中若干个点组成的一个集合\(V\),集合\(V\)的所有出边所连的点也都属于\(V\),这些点构成的图即为闭合子图点有点 ...
SpringBoot的幕后推手，分布式架构演进+相关笔记参考
这两年随着微服务的盛行,SpringBoot框架水到渠成的得到了高曝光,作为程序猿的我们,现在要是不知道一点SpringBoot相关的东西,貌似出去找工作都会被深深地鄙视,不过在我们开始Sprin ...
Javascript使用三大家族和事件来DIY动画效果相关笔记（一）
1.offset家族 ◆offsetWidth和offsetHeight表示盒子真实的宽度高度,这个真实的宽度包括四周的边框.四周的padding.及定义的宽度高度或内容撑开的高度和宽度,可以用来检 ...
记一次mpvue开发完整小程序相关笔记
通过一个月的小程序开发,记录下一点点小心得······ 先给各位大佬请安了~~ 1.wx.previewImage预览图片关闭后会再次触发onShow方法: 在全局变量里定义一个全局变量开关来控制, ...