code>canonicalUrl</code> - the canonical url</dd>
<dd><code>body</code> - the body</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>the string</dd>
</dl>
</li>
</ul>
<a name="doRequestSign-java.security.PrivateKey-java.lang.String...-">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>doRequestSign</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;doRequestSign(<a hre