url2.java

使用字节流访问URL资源

import java.net.*;
import java.io.*;
public class URL2
{
    public static void main(String args[])
    {
        String urlname = "file:d:/jdk1.3/docs/api/index.html";
        if (args.length>0)
            urlname = args[0];
        new URL2().display(urlname);
    }
    public void display(String urlname)
    {
        try
        {
            URL url = new URL(urlname);     //根据URL建立一个数据输入流
            InputStreamReader in=new InputStreamReader(url.openStream());
            BufferedReader br = new BufferedReader(in);
            String aline;
            while((aline=br.readLine())!=null)     //从流中读取一行显示
                System.out.println(aline);
        }
        catch(MalformedURLException murle)
        {
            System.out.println(murle);
        }
        catch(IOException ioe)
        {
            System.out.println(ioe);
        }
    }
}