import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.URL;
public class UserIP {
/**
- @param args
- @throws Exception
*@author liuwl
*/
public static void main(String[] args) throws Exception {
System.out.println(“本机的外网IP是：”+UserIP.getWebIP(“http://www.ip138.com/ip2city.asp”));
System.out.println(“本机的内网IP是：”+UserIP.getLocalIP());
}
/**
- 获取外网地址
- @param strUrl
- @return
*/
public static String getWebIP(String strUrl) {
try {
//连接网页
URL url = new URL(strUrl);
BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
String s = “”;
StringBuffer sb = new StringBuffer("");
String webContent = “”;
//读取网页信息
while ((s = br.readLine()) != null) {
sb.append(s + “\r\n”);
}
br.close();
//网页信息
webContent = sb.toString();
int start = webContent.indexOf("[")+1;
int end = webContent.indexOf("]");
//获取网页中 当前 的 外网IP
webContent = webContent.substring(start,end);
return webContent;
} catch (Exception e) {
e.printStackTrace();
return “error open url:” + strUrl;
}
}
public static String getLocalIP() throws Exception{
String localIP = “”;
InetAddress addr = (InetAddress) InetAddress.getLocalHost();
//获取本机IP
localIP = addr.getHostAddress().toString();
return localIP;
}
}
外部链接：https://blog.csdn.net/LOVELONG8808/article/details/40654325
