获取本机的内外网ip

package tool;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @description
 * @author: 123.com
 * @create: 2019-01-17 17:34:52
 **/

public class GetIp {
 public static void getip() {
 try {
 InetAddress address = InetAddress.getLocalHost();//获取的是本地的IP地址 //PC-20140317PXKX/192.168.0.121
 String hostAddress = address.getHostAddress();//192.168.0.121
 InetAddress address1 = InetAddress.getByName("www.wodexiangce.cn");//获取的是该网站的ip地址，比如我们所有的请求都通过nginx的，所以这里获取到的其实是nginx服务器的IP地
 String hostAddress1 = address1.getHostAddress();//124.237.121.122
 InetAddress[] addresses = InetAddress.getAllByName("www.baidu.com");//根据主机名返回其可能的所有InetAddress对象
 for(InetAddress addr:addresses){
 System.out.println(addr);//www.baidu.com/14.215.177.38
 //www.baidu.com/14.215.177.37
 }
 } catch (Exception e){
 e.printStackTrace();
 }
 }

 public static void main(String[] args) {
 String serverIp = getServerIp();
 System.out.println(serverIp);
 }

 /**
 * 获取服务器IP地址
 * @return
 */
 @SuppressWarnings("unchecked")
 public static String getServerIp(){
 InetAddress addr = null;
 try {
 addr = InetAddress.getLocalHost();
 } catch (UnknownHostException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 byte[] ipAddr = addr.getAddress();
 String ipAddrStr = "";
 for (int i = 0; i < ipAddr.length; i++) {
 if (i > 0) {
 ipAddrStr += ".";
 }
 ipAddrStr += ipAddr[i] & 0xFF;
 }
 //System.out.println(ipAddrStr);
 return "局域网："+ipAddrStr;
 }
}
/***************************************************分割线******************************************************/

package tool;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import java.net.URL;

public class Getip2 {
 public static String getWebIp() {
 try {

 //如果请求超时 ,请查看查询本机IP网站 是否更换
 URL url = new URL("http://2018.ip138.com/ic.asp");

 BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));

 String s = "";

 StringBuffer sb = new StringBuffer("");

 String webContent = "";


 while ((s = br.readLine()) != null) {
 sb.append(s + "\r\n");

 }

 br.close();
 webContent = sb.toString();
 int start = webContent.indexOf("[")+1;
 int end = webContent.indexOf("]");
 webContent = webContent.substring(start,end);
 return webContent;

 } catch (Exception e) {
 System.err.println("获取IP发生错误");
 e.printStackTrace();
 return "error";

 }

 }

 public static void main(String [] args) throws IOException {
 String ip = Getip2.getWebIp();
// System.out.println(ip);
 String str ="";
 StringBuilder sb = new StringBuilder(ip);
 sb.replace(12,15,str);
 System.out.println("所属外网:" + sb.toString());

 String serverIp = GetIp.getServerIp();
 System.out.println(serverIp);
 }

}