java下載程序

1.import java.io.BufferedInputStream;   
2.import java.io.FileOutputStream;   
3.import java.io.IOException;   
4.import java.net.URL;   
5.import java.net.URLConnection;   
6.  
7.  
8.public class DownLoad {   
9.  
10.private URL url=null;   
11.private URLConnection connection=null;   
12.public DownLoad()   
13.{   
14.     
15.}   
16.public static void main(String[] args) throws IOException   
17.{   
18.   DownLoad load=new DownLoad();   
19.   load.download("http://www.kmabc.com/satan/qhc.mp3","青花瓷.mp3",1024);   
20.   load.close();   
21.}   
22.private void close()   
23.{   
24.     
25.}   
26./**  
27.*   
28.* @param string 下載地址  
29. 
30.* @param buffer 緩衝區大小  
31.* @param string2 保存地址  
32.* @throws IOException  
33.*/  
34.private void download(String string, String string2,int buffer) throws IOException   
35.{   
36.            this.url=new URL(string);   
37.            this.connection=url.openConnection();   
38.           BufferedInputStream in=new BufferedInputStream(this.connection.getInputStream());   
39.            FileOutputStream out=new FileOutputStream(string2);   
40.            byte[] bs=new byte[buffer];   
41.           int n=0;   
42.           int i=0;   
43.            while((n=in.read(bs))!=-1)   
44.          {   
45.             out.write(bs,0,n);   
46.             i++;   
47.             System.out.println("下載中..."+i);   
48.           }   
49.          out.flush();   
50.          out.close();   
51.           in.close();   
52.}   
53.  
54.}