关于下载
private static void downloadFile(String url, File outputFile) {?
? try {?? ? ? URL u = new URL(url);?
? ? ? URLConnection conn = u.openConnection();?
? ? ? int contentLength = conn.getContentLength();?
?
? ? ? DataInputStream stream = new DataInputStream(u.openStream());?
?
? ? ? ? byte[] buffer = new byte[contentLength];?
? ? ? ? stream.readFully(buffer);?
? ? ? ? stream.close();?
?
? ? ? ? DataOutputStream fos = new DataOutputStream(new FileOutputStream(outputFile));?
? ? ? ? fos.write(buffer);?
? ? ? ? fos.flush();?
? ? ? ? fos.close();?
? } catch(FileNotFoundException e) {?
? ? ? return; // swallow a 404?
? } catch (IOException e) {?
? ? ? return; // swallow a 404?
? }?
}?
