Java如何獲取本地計算機的IP地址和主機名

可以使用 InetAddress.getLocalHost()，代碼如下：

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import?java.net.*;

public?class?App?{

public?static?void?main(String[]?args)?throws?UnknownHostException?{

InetAddress?local?=?InetAddress.getLocalHost();

System.out.println("計算機名："?+?local.getHostName());

System.out.println("IP："?+?local.getHostAddress());

}

}

java如何獲取機器名

java獲取機器名，主要是使用InterAddress類，如下代碼：

package?com.qiu.lin.he;

import?java.net.InetAddress;

public?class?Ceshi?{

public?static?void?main(String[]?args)?{

InetAddress?addr?=?null;

String?address?=?"";

try?{

addr?=?InetAddress.getLocalHost();//新建一個InetAddress類

address?=?addr.getHostName().toString();//?獲得本機名稱

}?catch?(Exception?e)?{

e.printStackTrace();

}

System.out.println(address);

}

}

結(jié)果如下：

java 怎么根據(jù)IP地址獲取主機名

//看看這個代碼如何。

import?java.net.InetAddress;

import?java.net.UnknownHostException;

import?java.util.Properties;

import?java.util.Set;

public?class?TestSystemProperties?{

public?static?void?main(String?[]?args){

InetAddress?netAddress?=?getInetAddress();

System.out.println("host?ip:"?+?getHostIp(netAddress));

System.out.println("host?name:"?+?getHostName(netAddress));

Properties?properties?=?System.getProperties();

SetString?set?=?properties.stringPropertyNames();?//獲取java虛擬機和系統(tǒng)的信息。

for(String?name?:?set){

System.out.println(name?+?":"?+?properties.getProperty(name));

}

}

public?static?InetAddress?getInetAddress(){

try{

return?InetAddress.getLocalHost();

}catch(UnknownHostException?e){

System.out.println("unknown?host!");

}

return?null;

}

public?static?String?getHostIp(InetAddress?netAddress){

if(null?==?netAddress){

return?null;

}

String?ip?=?netAddress.getHostAddress();?//get?the?ip?address

return?ip;

}

public?static?String?getHostName(InetAddress?netAddress){

if(null?==?netAddress){

return?null;

}

String?name?=?netAddress.getHostName();?//get?the?host?address

return?name;

}

}

這個代碼簡單明了，就是調(diào)用現(xiàn)成的InetAddress類