我如何在Swift中发出读取多个参数的发布请求？

Question

我正在尝试将JSON正文发送到REST API，但它仅读取第一个参数，而根本无法识别JSON的其余部分。我测试了JSON正文其他部分的错误，但没有像往常一样收到错误。

func postRequest(classroomID: String, email: String, vote: String){

    //declare parameter as a dictionary which contains string as key and value combination.
    let parameters = [
            "classroomID": classroomID,
            "LastUpdated": "2020-01-01",
            "TheVoteData"[
                          "Email": email,
                          "TheVote": vote
              ]
     ]

    //create the url with NSURL
    let url = URL(string: "https://www.api-gateway/dynamoDB/resource")!

    //create the session object
    let session = URLSession.shared

    //now create the Request object using the url object
    var request = URLRequest(url: url)
    request.httpMethod = "POST" //set http method as POST

    do {
        request.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted) // pass dictionary to data object and set it as request body
    } catch let error {
        print(error.localizedDescription)
    }

    //HTTP Headers
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")

    //create dataTask using the session object to send data to the server
    let task = session.dataTask(with: request, completionHandler: { data, response, error in

        guard error == nil else {
            completion(nil, error)
            return
        }

        guard let data = data else {
            return
        }

        do {
            //create json object from data
            guard let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: Any] else {
                return
            }
            print(json)
            completion(json, nil)
        } catch let error {
            print(error.localizedDescription)
        }
    })

    task.resume()
}

这会将教室ID发布到数据库，但不会通过电子邮件或投票发布。我从这里得到这种方法：How to make HTTP Post request with JSON body in Swift

非常感谢您的帮助！

Answer 1

我认为您在参数中提供的JSON数据无效（我使用jsonlint.com进行检查），尝试以下操作：

Answer 2

没有看到您的API代码，您可以尝试使用URLQueryItems（它们也更安全）：