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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../cn/felord/payment/wechat/v3/SignatureProvider.html#doRequestSign-java.security.PrivateKey-java.lang.String...-">doRequestSign</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/security/PrivateKey.html?is-external=true" title="java.security中的类或接口">PrivateK