读取网络文件问题

[skycncomp]

我读网络中的一张图片,想在保存到本地如下::

String path = "http://www.sun.com/im/a.gif";
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(new File(path)));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File("d://aa")));

int i = 0;
byte[] b = new byte[1024];
while ((i = bis.read(b)) != -1) {

bos.write(b);
}

bis.close();
bos.close();

为什么总是报异常如下::

java.io.FileNotFoundException: http:\www.sun.com\im\a.gif (文件名、目录名或卷标语法不正确。)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at java.io.FileInputStream.<init>(FileInputStream.java:66)
at cncomp.internet.operatorfile.Internet.savePic(Internet.java:93)
at cncomp.internet.operatorfile.ReadWeb.main(ReadWeb.java:26)
Exception in thread "main"

[humanity]

不是 BufferedInputStream bis = new BufferedInputStream(new FileInputStream(new File("http://www.sun.com/im/a.gif")));

因为你这个地址不是文件,

你要用 URL url =new URL("http://www.sun.com/im/a.gif");
InputStream is = url.openStream();