nl_tokens: 获取 token
pl_tokens: function ( code ) { var params ; var headers = { 'Content-Type' : 'application/x-www-form-urlencoded' } ; if ( this . private ) { headers . Authorization = 'Basic ' + Buffer . from ( this . app_key + ':' + this . app_secret ) . toString ( 'base64' ) ; params = { grant_type : 'client_credentials' } ; } else { if ( arguments . length < 1 ) { throw paramError ; } params = { grant_type : 'authorization_code' , code : code , client_id : this . app_key , redirect_uri : this . redirect_url ? this . redirect_url : this . callback_url } ; } var option = { hostname : this . host , path : '/oauth2/token' , method : 'POST' , headers : headers } ; return this . _request . request ( option , params ) . then ( function ( data ) { if ( ! data . token . length ) { throw <mask> Error ( '无效的 token'); } return data . token ; } ) ; }