java下载远程文件到本地

public static boolean httpDownload(String httpUrl, String saveFile) {
// 下载网络文件
//int bytesum = 0;
int byteread = 0;

URL url = null;
try {
url = new URL(httpUrl);
} catch (MalformedURLException e1) {
e1.printStackTrace();
return false;
}

try {
URLConnection conn = url.openConnection();
InputStream inStream = conn.getInputStream();
FileOutputStream fs = new FileOutputStream(saveFile);

byte[] buffer = new byte[1024];
while ((byteread = inStream.read(buffer)) != -1) {
//bytesum += byteread;
//System.out.println(bytesum);
fs.write(buffer, 0, byteread);
}
inStream.close();
fs.close();
return true;
} catch (FileNotFoundException e) {
e.printStackTrace();
return false;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}