问使用SwiftUI组合刷新令牌

EN

private func dataTaskPublisherWithAuth(for request: URLRequest) -> URLSession.DataTaskPublisher {
    return session.dataTaskPublisher(for: request)

        .tryCatch { error -> URLSession.DataTaskPublisher in
guard error.errorCode == 401 else {
throw error
}
var components = URLComponents(url: self.baseUrl, resolvingAgainstBaseURL: true)
components?.path += "/refresh"
components?.queryItems = [
URLQueryItem(name: "refresh_token", value: KeychainHelper.RefreshToken),
]

let url = components?.url
var loginRequest = URLRequest(url: url!)
loginRequest.httpMethod = "GET"
loginRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")

return session.dataTaskPublisher(for: loginRequest)
.decode(type: LoginResponse.self, decoder: JSONDecoder())
.map { result in
if result.accessToken != nil {
// Save access token
KeychainHelper.AccessToken = result.accessToken!
KeychainHelper.RefreshToken = result.refreshToken!
KeychainHelper.ExpDate = Date(timeIntervalSinceNow: TimeInterval(result.expiresIn!))
}
return result
}
.flatMap { data -> URLSession.DataTaskPublisher in
session.dataTaskPublisher(for: request)
}
    }.eraseToAnyPublsiher()

}