如题，上传文件后，sign_url_auth_with_expire_time计算得到的url无法直接访问，返回AccessDenied。
重现：


#sign_url_auth_with_expire_time(self, method, url, headers = {}, resource="/", timeout = 60):
    method = "GET"
    object = "object_test"
    url = "http://" + HOST + "/" + bucket + "/" + object
    headers = {}
    resource = "/" + bucket + "/" + object

    timeout = 60
    url_with_auth = oss.sign_url_auth_with_expire_time(method, url, headers, resource, timeout)
    print "after signature url is: ", url_with_auth
    res = urllib.urlopen(url_with_auth)
    if res.getcode() != 200:
        print "request auth url Error %s" % res.getcode()
    else:
        print "request auth url, OK"
    print sep
完整代码见附件。