我正在使用Flex Builder 4来请求cloudstack API和获取响应。当我执行程序时,生成url。但该网页显示错误,如
<?xml version="1.0" encoding="UTF-8"?>
-<listzonesresponse cloud-stack-version="4.0.1.20130201075054"><errorcode>401</errorcode>
<errortext>unable to verify user credentials and/or request signature
</errortext></listzonesresponse>
谁能说出错误是什么?