如何修复grant_type错误是NULL - 不支持的授权类型与Pay Pal的REST API用于访问令牌

Question

我正在调用Paypal的REST API来获取访问令牌https://developer.paypal.com/docs/api/overview/#get-an-access-token

我正在使用superagent节点来进行AJAX调用。

这是我的代码：

const basicAuth = Buffer.from(`${PAYPAL_CLIENT}:${PAYPAL_SECRET}`).toString('base64')

request
  .post(PAYPAL_OAUTH_API)
  .set('Accept', 'application/json')
  .set('grant_type', 'client_credentials')
  .set('Authorization', `Basic ${basicAuth}`)
  .send()
  .end((result) => {
    console.log(result.response.error)
  })

这是我得到的错误的日志

{ Error: cannot POST /v1/oauth2/token/ (400)
    at Response.toError (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\node\response.js:94:15)
    at ResponseBase._setStatusProperties (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\response-base.js:123:16)
    at new Response (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\node\response.js:41:8)
    at Request._emitResponse (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\node\index.js:850:20)
    at parser (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\node\index.js:1036:38)
    at IncomingMessage.res.on (C:\Users\shlomo\projects\tribewise-backend-v1\node_modules\superagent\lib\node\parsers\json.js:19:7)
    at emitNone (events.js:111:20)
    at IncomingMessage.emit (events.js:208:7)
    at endReadableNT (_stream_readable.js:1064:12)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickDomainCallback (internal/process/next_tick.js:218:9)
  status: 400,
  text: '{"error":"unsupported_grant_type","error_description":"Grant Type is NULL"}',
  method: 'POST',
  path: '/v1/oauth2/token/' }

为什么我收到错误的未报告授权类型 - 授权类型为NULL？在postman它可以工作，但我无法让它与superagent和节点一起工作。 Paypal给出了两个带邮差和卷曲的here示例。为什么不和superagent合作？

Answer 1

来自您链接到的paypal文档：

如果使用cURL以外的命令行工具，请将Accept header设置为application/x-www-form-urlencoded

来自您链接到的superget文档：

默认情况下，发送字符串会将Content-Type设置为application/x-www-form-urlencoded

所以将您的请求更改为：

// PAYPAL_LINK = "https://api.sandbox.paypal.com"
// PAYPAL_OAUTH_API = "/v1/oauth2/token"
request(PAYPAL_LINK)
  .post(PAYPAL_OAUTH_API)
  .send('grant_type=client_credentials')
  .auth(PAYPAL_CLIENT, PAYPAL_SECRET)
  .then(response => console.log(response))
  .catch(error => console.error(error))

如果你想要响应Accept: application/json，可以选择设置json