我有以下代码：
$login = array(
'login' => $user,
'password' => $pw
);
$soapClient = new \SoapClient("https://confluence.com/confluence/rpc/soap-axis/pdfexport?wsdl", $login);
$token = $soapClient->__soapCall("login", $login);
$result = $soapClient->__soapCall("exportSpace", array("token" => $token, 'spaceKey' => "spacename"));
print_r($result); }
来自soap的错误消息是：
SoapFault：java.lang.NullPointerException