Question

java 怎么获取本机ip地址

Answer 1

电脑的ip地址怎么查

Answer 2

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();  
        Set<String> set = properties.stringPropertyNames(); //获取java虚拟机和系统的信息。  
        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;  
    }  
  
}

Answer 3

InetAddress addr = InetAddress.getLocalHost();
String ip=addr.getHostAddress().toString;//获得本机IP
String address=addr.getHostName().toString;//获得本机名称