我正在尝试编写一个函数来处理 Spotify API 的一些身份验证。我可以使用相当简单的curl命令让它工作,但是当我尝试使用httr或RCurl时,我得到415不支持的媒体类型响应。我现在有点不知所措。我已经让 POST()
和 GET()
可以使用此 API,但此端点无法正常工作。
使用httr:
response <- POST('https://accounts.spotify.com/api/token',
accept_json(),
add_headers('Authorization'=paste('Basic',base64(paste(client_id,':',client_secret)),sep=' ')),
body=list(grant_type='client_credentials'),
encode='json')
我收到 415 status_code(response)
使用RCurl:
httpheader <- c('Authorization'=paste('Basic ',base64(paste(client_id,':',client_secret,sep='')),sep=''))
jsonbody <- toJSON(list(grant_type='client_credentials'))
postForm('https://accounts.spotify.com/api/token/',
postfields=jsonbody,
# grant_type='client_credentials',
.opts = list(httpheader=httpheader,
verbose=TRUE))
postForm 输出:
* Hostname was NOT found in DNS cache
* Trying 194.132.198.228...
* Connected to accounts.spotify.com (194.132.198.228) port 443 (#9)
* found 173 certificates in /etc/ssl/certs/ca-certificates.crt
* server certificate verification OK
* common name: *.spotify.com (matched)
* server certificate expiration date OK
* server certificate activation date OK
* certificate public key: RSA
* certificate version: #3
* subject: C=SE,ST=Stockholm,L=Stockholm,O=Spotify AB,CN=*.spotify.com
* start date: Tue, 15 Apr 2014 00:00:00 GMT
* expire date: Wed, 21 Jun 2017 12:00:00 GMT
* issuer: C=US,O=DigiCert Inc,CN=DigiCert SHA2 Secure Server CA
* compression: NULL
* cipher: AES-256-CBC
* MAC: SHA256
> POST /api/token/ HTTP/1.1
Host: accounts.spotify.com
Accept: */*
Authorization: Basic ZWE...zE=
Content-Length: 182
Expect: 100-continue
Content-Type: multipart/form-data; boundary=------------------------95ce917e6abd21b1
< HTTP/1.1 100 Continue
< HTTP/1.1 415 Unsupported Media Type
* Server nginx is not blacklisted
< Server: nginx
< Date: Wed, 21 Oct 2015 01:38:39 GMT
< Content-Length: 990
< Connection: keep-alive
< Keep-Alive: timeout=10
* HTTP error before end of send, stop sending
<
* Closing connection 9
Error: Unsupported Media Type
通过系统
调用(或从命令行)使用curl实际上是有效的:
system(
paste('curl https://accounts.spotify.com/api/token -H "Authorization: Basic ',
base64(paste(client_id,':',client_secret,sep='')),
'" -d grant_type=client_credentials ',
sep=''),
intern=TRUE)
目前不确定这是否有用。
> devtools::session_info()
Session info -------------------------------------------------------------------------------------------------------
setting value
version R version 3.2.2 (2015-08-14)
system x86_64, linux-gnu
ui RStudio (0.99.441)
language en_US
collate en_US.UTF-8
tz <NA>
date 2015-10-20
Packages -----------------------------------------------------------------------------------------------------------
package * version date source
bitops 1.0-6 2013-08-17 CRAN (R 3.2.1)
caTools 1.17.1 2014-09-10 CRAN (R 3.2.1)
colorspace 1.2-6 2015-03-11 CRAN (R 3.2.1)
curl 0.9.3 2015-08-25 CRAN (R 3.2.2)
DBI 0.3.1 2014-09-24 CRAN (R 3.2.1)
devtools * 1.9.1.9000 2015-10-21 Github (hadley/devtools@0295d20)
digest 0.6.8 2014-12-31 CRAN (R 3.2.1)
git2r 0.11.0 2015-08-12 CRAN (R 3.2.2)
httr * 1.0.0.9000 2015-10-21 Github (hadley/httr@f7593b7)
jsonlite * 0.9.17 2015-09-06 CRAN (R 3.2.2)
knitr 1.11 2015-08-14 CRAN (R 3.2.2)
magrittr 1.5 2014-11-22 CRAN (R 3.2.1)
memoise 0.2.1 2014-04-22 CRAN (R 3.2.1)
R6 2.1.1 2015-08-19 CRAN (R 3.2.2)
Rcpp 0.12.1 2015-09-10 CRAN (R 3.2.2)
RCurl * 1.96-0 2015-07-27 local
RJSONIO * 1.3-0 2014-07-28 CRAN (R 3.2.2)
roxygen2 4.1.1 2015-04-15 CRAN (R 3.2.1)
RSelenium * 1.3.5 2014-10-26 CRAN (R 3.2.2)
rstudioapi 0.3.1 2015-04-07 CRAN (R 3.2.1)
stringi 0.5-5 2015-06-29 CRAN (R 3.2.2)
stringr * 1.0.0 2015-04-30 CRAN (R 3.2.2)
XML * 3.98-1.3 2015-06-30 CRAN (R 3.2.2)
最佳答案
该特定 Spotify 端点正在寻找 Content-Type: application/x-www-form-urlencoded
与 JSON。这应该有效(它对我有用):
library(httr)
response <- POST('https://accounts.spotify.com/api/token',
accept_json(),
authenticate(Sys.getenv("SPOTIFY_CLIENT_ID"), Sys.getenv("SPOTIFY_CLIENT_SECRET")),
body=list(grant_type='client_credentials'),
encode='form',
verbose())
(您可以在生产环境中删除 verbose()
)
请注意 encode='form'
但还要注意,您可以使用 authenticate()
vs 构建您自己的基本身份验证 header (我将所有 key 存储在环境变量中,因此使用 Sys.getenv()
。
关于r - 使用httr和RCurl的415代码,但不仅仅是curl,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33249660/