如何在Swift中发出读取1个以上参数的post请求？

Question

我试图将一个JSON主体发送到REST API，但它只读取第一个参数，根本无法识别JSON的其余部分。我测试了JSON主体的其他部分，并没有像通常那样得到错误。

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()
}

这将张贴classroomID到数据库，但不是电子邮件或投票。我从这里得到了这个方法：如何在Swift中用JSON体制作HTTP Post请求

Answer 1

我不认为您在参数中提供的JSON数据是有效的（我使用jsonlint.com进行检查）

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

//declare parameter as a dictionary which contains string as key and value combination.
let parameters: [String:Any] = [
        "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")!


//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")

let jsonData = try! JSONSerialization.data(withJSONObject: parameters, options: [])
//create dataTask using the session object to send data to the server
 let task = URLSession.shared.uploadTask(with: request, from: jsonData) { data, response, error in
    if let data = data, let dataString = String(data: data, encoding: .utf8) {
        print(dataString)
    }
    //Returns HHTP response if
    if let httpResponse = response as? HTTPURLResponse {
        print(httpResponse.statusCode)
    }
}

task.resume()
}