Get Net Ip address - Java Network

Java examples for Network:IP Address

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  4. IP Address

Description

Get Net Ip address

Demo Code


//package com.java2s;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;
import java.net.URLConnection;

public class Main {
    public static void main(String[] argv) throws Exception {
        System.out.println(GetNetIp());
    }/*from  w w  w  .  java  2 s . c o  m*/

    public static String GetNetIp() {
        URL infoUrl = null;
        InputStream inStream = null;
        try {
            infoUrl = new URL("http://iframe.ip138.com/ic.asp");
            URLConnection connection = infoUrl.openConnection();
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            int responseCode = httpConnection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                inStream = httpConnection.getInputStream();
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(inStream, "utf-8"));
                StringBuilder strber = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                    strber.append(line + "\n");
                }
                inStream.close();
                int start = strber.indexOf("[");
                int end = strber.indexOf("]", start + 1);
                line = strber.substring(start + 1, end);
                return line;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

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