如果试图以不支持的操作来访问某个资源，返回405 Method Not Allowed错误
请求示例：
abc /BucketName HTTP/1.1
Host: storage.aliyun.com
Date: date
Authorization: signatureValue
返回消息头示例：
x-oss-request-id: 2403382433A2EDA8
Allow: GET, DELETE, HEAD, PUT
Content-Type: application/xml
Transfer-Encoding: chunked
Date: Thu, 31 Mar 2011 10:01:52 GMT
Server: AliyunOSS
返回消息体示例:
<?xml version="1.0" ?>
<Error>
<Code>
MethodNotAllowed
</Code>
<Message>
The specified method is not allowed against this resource.
</Message>
<ResourceType>
BUCKET
</ResourceType>
<Method>
abc
</Method>
<RequestId>
2403382433A2EDA8
</RequestId>
<HostId>
storage.aliyun.com
</HostId>
</Error>
注意：如果访问的资源是 /bucket/， ResourceType应该是bucket，如果访问的资源是 /bucket/object，ResourceType应该是object。