这是我正在使用的 json 请求，
http://api.tumblr.com/v2/blog/samarthsave1.tumblr.com/post?oauth_consumer_key=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
&oauth_nonce=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
&oauth_signature=14RMDFmQbzWRKPvfrijQRf%2FoNqY%3D
&oauth_signature_method=HMAC-SHA1
&oauth_timestamp=1347387190
&oauth_token=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
&oauth_version=1.0
&title=This%20test
&url=http%3A%2F%2Fgoogle.com
&description=asd%20as%20asdasas%20ad%20a
&api_key=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
&type=link
我通过以下标题
{"Content-Type":"application/x-www-form-urlencoded","Authorization":"OAuth","Accept":" / "}
我正进入（状态
{"meta":{"status":401,"msg":"Not Authorized"},"response":[]}
我错过了什么？