yteCount</code> bytes.

 <p>It is an error to call this method after the body has been consumed.

 <p><strong>Warning:</strong> this method loads the requested bytes into memory. Most
 applications should set a modest limit on <code>byteCount</code>, such as 1 MiB.</div>
<dl>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="java.io中的类或接口">IOException</a></code></dd>
</dl>
</li>
</ul>
<