下载

下载示例程序

 

public class Download {	
public void downloadUrl(){	
try {
URL url = new URL("http://www.sina.com.cn");
InputStream is = url.openStream();  
   BufferedReader br = new BufferedReader(new InputStreamReader(is));  
   String line = "";  
       while (line != null) {  
           line = br.readLine();  
           System.out.println(line);  
       } 
} catch (Exception e) {
e.printStackTrace();
}  
      	
}
public void downloadFile(){
try{
System.out.println("正在建立连接");
URL url = new URL("http://www.aaa.com/videos/988/988711.flv");	
InputStream is = url.openStream();  
        Calendar beginTime = Calendar.getInstance();	  
System.out.println("download begin===="+url.getFile());
OutputStream os = new BufferedOutputStream(new FileOutputStream("D:/downloads/ss.flv"));
   
byte[] bytes = new byte[1024] ;
int temp = 0 ;
int fileLength = 0;
while((temp=is.read(bytes))!=-1){
 os.write(bytes,0,temp);
 fileLength += temp;   
}
Calendar endTime = Calendar.getInstance();
long time = endTime.getTimeInMillis() - beginTime.getTimeInMillis() ;
double downloadSpead = fileLength / time ;
os.flush();
os.close();
is.close();
System.out.println("下载完成");
                        System.out.println("下载速度"+downloadSpead);
}catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args){
Download  download = new Download();
download.downloadFile();	
}
}