package com.http.get;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.sql.Savepoint;

import java.text.DateFormat;

import java.util.Date;

public class HttpUtils {

    private static String URL_PATH="http://www.dazhongtry.com/TryPic/image/20150928/20150928142189698969.jpg";

    public HttpUtils() {

        // TODO Auto-generated constructor stub

    }

    public static void saveImagestodisk() throws IOException

    {

        InputStream inputStream=getInputStream();

        byte[] data=new byte[1024];

        int len=0;

        String ext=URL_PATH.substring(URL_PATH.lastIndexOf(".")).toLowerCase();

        Date date=new Date();

        long lSysTime1 = date.getTime() ;

        FileOutputStream fileoutputstream=new FileOutputStream("D:\\"+lSysTime1+ext);

        while((len=inputStream.read(data))!=-1)

        {

            fileoutputstream.write(data,0,len);

        }

        fileoutputstream.close();

        inputStream.close();

    }

    public static InputStream getInputStream() throws IOException{

        InputStream inputStream=null;

        HttpURLConnection httpurlconn=null;

        try {

            URL url=new URL(URL_PATH);

            if(url!=null)

            {

            httpurlconn=(HttpURLConnection) url.openConnection();

            //设置连接超时时间

            httpurlconn.setConnectTimeout(3000);

            //表示使用GET方式请求

            httpurlconn.setRequestMethod("GET");

            int responsecode=httpurlconn.getResponseCode();

            if(responsecode==200)

            {

                //从服务返回一个输入流

                inputStream=httpurlconn.getInputStream();

            }

            }

        } catch (MalformedURLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        return inputStream;

    }

    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        try {

            saveImagestodisk();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}