解析主机名的 ip 地址

我有 DNS 服务器的 IP 地址和主机名。

使用 Java，我怎样才能找到由该 DNS 服务器返回的 IP 地址和主机名？

java

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最佳答案

Take a look at InetAddress and the getHostAddress() method.

InetAddress address = InetAddress.getByName("www.example.com");
System.out.println(address.getHostAddress());

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You can use InetAddress for this. Try the below code,

InetAddress address = InetAddress.getByName("www.yahoo.com");
System.out.println(address.getHostAddress());
System.out.println(address.getHostName());

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You can do it like this:

for(InetAddress addr : InetAddress.getAllByName("stackoverflow.com"))
System.out.println(addr.getHostAddress());

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As suggested by all above, you can use InetAddress.getByName("hostName") but this can give you a cached IP, Read the java documentation for the same. If you want to get a IP from DNS you can use:

InetAddress[] ipAddress = DNSNameService.lookupAllHostAddr("hostName");