网络编程 URL

 1 package netTest;
 2 
 3 import java.io.IOException;
 4 import java.io.InputStream;
 5 import java.net.MalformedURLException;
 6 import java.net.URL;
 7 
 8 public class URLConnection {
 9     public static void main(String[] args) throws IOException {
10         URL url = new URL("http://localhost:8080/myweb/demo.html");
11         // 内部帮忙做连接 不用再写socket了，而且是带着协议封装的。此时在应用层
12         java.net.URLConnection conn = url.openConnection();
13         //.out.println(conn);
14         //socket 的inputStream 流
15         InputStream in = conn.getInputStream();
16         byte[] buf = new byte[1024];
17         int len = in.read(buf);
18         System.out.println(new String(buf,0,len));
19     }
20 }