我有一个vapor3应用程序,在里面我试图连接到Xero Api,过程相当简单。我们将用户发送到xero网页,在那里他们使用详细信息登录并授权我们的连接,然后重定向回我的vapor 3应用程序。在应用程序中,我们使用重定向中提供的代码连接到xero服务器,然后xero应该会发出一个访问令牌,以便继续使用。该过程在here中描述
问题是我无法连接到xero来获取访问令牌。我尝试了两种方法,第一种是使用HTTPClient,代码如下:
let m = try decoder.decode(Master.self, from: masterDoc!)
let ci = m.xeroAppKey.data(using: .utf8)?.base64EncodedString() //convert from string to base encoded
let xs = m.xeroAppSec.data(using: .utf8)?.base64EncodedString() //convert from string to base encoded
let authorization = "Basic " + ci! + ":" + xs!
print("authorisation is \(authorization)")
return HTTPClient.connect(hostname: "identity.xero.com", on: req).flatMap{client in
var httpReq = HTTPRequest(method: .POST, url: "https://identity.xero.com/connect/token")
httpReq.headers.add(name: "authorization", value: authorization)
httpReq.headers.add(name: "Content-Type", value: "x-www-form-urlencoded")
httpReq.body = HTTPBody(string: "grant_type=authorization_code&code=\(code)&redirect_uri=http://localhost:8080/XeroAuthRedirect")
return client.send(httpReq).flatMap{resp in
print("response is \(resp) with status \(resp.status)")
return req.future().map{
return .ok
}
}
} 这样,我得到了以下响应:
HTTP/1.1 301 Moved Permanently
Server: AkamaiGHost
Content-Length: 0
Location: https://identity.xero.com/connect/token
Expires: Tue, 02 Jun 2020 07:59:59 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Tue, 02 Jun 2020 07:59:59 GMT
Connection: keep-alive这表明端点已经移动,但建议的位置与我尝试连接的位置相同。我在文档中找不到任何暗示终点已经改变的地方。HTTPClient似乎也不会遵循重定向。
因此,我尝试使用URLSession连接,而不是使用以下代码:
let url = URL(string:"https://identity.xero.com/connect/token")!
let payload = "grant_type=authorization_code&code=\(code)&redirect_uri=http://localhost:8080/XeroAuthRedirect".data(using: .utf8)
let promise = req.eventLoop.newPromise(HTTPStatus.self)
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.addValue(authorization, forHTTPHeaderField: "authorization")
request.addValue("x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpBody = payload
URLSession.shared.dataTask(with: request) {(data, response, error) in
if let error = error {
print(error.localizedDescription)
promise.fail(error: error) // (!)
return
}
guard let data = data else {
print("empty data")
promise.fail(error: SumUpError.invalidResponse) // (!)
return
}
guard let str = String(data: data, encoding: .utf8) else {
print("invalid data")
promise.fail(error: SumUpError.invalidResponse) // (!)
return
}
print(str)
print("response is \(String(describing: response))")
}.resume()在那里我得到了以下错误消息。
{"error":"invalid_request"}任何想法,这里发生了什么,或者我如何才能让这个连接启动和运行,都是非常可取的。
发布于 2020-06-02 23:16:31
好的,所以最后的答案是使用req.client()中的vapor客户端服务。
我使用了以下代码。我还犯了一个新手错误,对客户id和客户机密进行编码,然后对它们进行梳理,而不是先将它们组合在一起,然后再对它们进行编码。文档确实显示了这一点,但我猜还不够清楚。不管怎样,这是用Vapor 3连接Xero Api的代码。
let toBase = "\(clientId):\(clientSecret)".data(using: .utf8)?.base64EncodedString()
let authorization = "Basic " + toBase!
let payload = "grant_type=authorization_code&code=\(code)&redirect_uri=http://localhost:8080/XeroAuthRedirect".data(using: .utf8)!
let request = Request( using: req)
request.http.url = URL(string:"https://identity.xero.com/connect/token")!
request.http.body = payload.convertToHTTPBody()
request.http.method = HTTPMethod.POST
request.http.headers.add(name: "authorization", value: authorization)
request.http.headers.add(name: "Content-Type", value: "application/x-www-form-urlencoded")
return try req.client().send(request).flatMap{resp in
}希望这对任何试图用Vapor添加xero的人都有帮助。
https://stackoverflow.com/questions/62147572
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