java根据URL地址下载文件

public static void main(String[] args) throws IOException {

String s = "http://mp3.9ku.com/file2/418/417077.mp3";

// String s = "http://bbs.besgold.com/url/vdisk/11654115.mp3";

System.out.println(s);

InputStream in = new URL(s).openConnection().getInputStream();

OutputStream ou = new FileOutputStream("d:\\11.mp3");

try {

int c = 0;

int k = 0;

float m = 0;

int bread = 0;

byte[] byt = new byte[2048];

while ((bread = in.read(byt, 0, 2048)) != -1) {

ou.write(byt, 0, bread);

c = c + bread;

k = c / 1024;

m = k / 1024;

System.out.println("己下载: " + k + "k " + m + "M");

}

in.close();

ou.close();

} catch (Exception e) {

e.printStackTrace();

}

}