如何从Java中的域名中获取IP地址？
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How to get the IP address from the Domain Name in Java?
提问by giri
I am writing an application where I need the IP address. I have a domain name and I would like to know how to get the IP address from it. For example, "www.girionjava.com". How could I get the IP address of this website by programming in Java? Thanks.
我正在编写一个需要 IP 地址的应用程序。我有一个域名，我想知道如何从中获取 IP 地址。例如，“www.girionjava.com”。如何通过Java编程获取本网站的IP地址？谢谢。
回答by flybywire
InetAddress.getByName("www.girionjava.com")
回答by Powerlord
InetAddress giriAddress = java.net.InetAddress.getByName("www.girionjava.com");
Then, if you want the IP as a String
然后，如果您希望 IP 作为字符串
String address = giriAddress.getHostAddress();
回答by M. Jessup
(Extra mask in printing sine java considers all integers to be signed, but an IP address is unsigned)
（打印正弦 java 中的额外掩码认为所有整数都是有符号的，但 IP 地址是无符号的）
InetAddress[] machines = InetAddress.getAllByName("yahoo.com");
for(InetAddress address : machines){
byte[] ip = address.getAddress();
for(byte b : ip){
System.out.print(Integer.toString(((int)b)&0xFF)+".");
}
System.out.println();
}
回答by redoc
This should be simple.
这应该很简单。
InetAddress[] machines = InetAddress.getAllByName("yahoo.com");
for(InetAddress address : machines){
System.out.println(address.getHostAddress());
}
