在我的程序中,用户输入一个url字符串,比如说
http://www.engineering.uiowa.edu/~hawkeng//fall01/graphics/potato.gif
我如何获得此网址的IP地址?我尝试使用
InetAddress address = InetAddress.getByName(urlStr);
但结果总是返回null。获取IP地址的正确方法是什么?
答案 0 :(得分:61)
试试这个:
InetAddress address = InetAddress.getByName(new URL(urlString).getHost());
获取原始IP:
String ip = address.getHostAddress();
答案 1 :(得分:10)
您需要将hostname
提供给getByName()方法并返回
主机的IP地址,给定主机名。
URL url = new URL("http://www.engineering.uiowa.edu/~hawkeng//fall01/graphics/potato.gif");
System.out.println(url.getHost());
InetAddress address = InetAddress.getByName(url.getHost());
System.out.println(address.toString());
输出= www.engineering.uiowa.edu/128.255.17.182
获取IP address
String temp = address.toString();
String IP = temp.substring(temp.indexOf("/")+1,temp.length());