first.java

一个简单的抓取网页并保留该网页的程序

import java.io.*;
import java.net.*;
import java.io.InputStreamReader;
public class first
{
	public static void main(String[] args) throws IOException
	{
		String http = "http://finance.sina.com.cn/";
		URL url=null;
		long start_time=System.currentTimeMillis();
		long end_time;
		try{
			url = new URL(http);
		}catch(MalformedURLException e){
			System.out.println("Ip isn't valid!");
		}
        InputStream inputStream = url.openStream();
        try{
        	 BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
             PrintWriter out=new PrintWriter(new BufferedWriter(new FileWriter("d:\\java\\cx\\hw1.html")));
             String s = "";
             while ((s = bufferedReader.readLine()) != null) {
                 out.write(s);
                 }
                  end_time=System.currentTimeMillis();
             out.write("<br>The time used is:"+(end_time-start_time));
             out.flush();
        }catch(EOFException e){
         	System.err.println("End of stream");
         }
  inputStream.close();
	}
}