常用小代码

private static void readFully(InputStream is, OutputStream os) {

try {

byte[] buffer = new byte[BUFFER_LENGTH];

int length = 0;

while ((length = is.read(buffer)) > 0) {

os.write(buffer, 0, length);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

if (is != null) {

try {

is.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if (os != null) {

try {

os.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}