如何通过 POST 方法将数组发送到服务器？

Posted 2023-03-15

【中文标题】如何通过 POST 方法将数组发送到服务器？

【英文标题】：How to send array by POST method to server?

【发布时间】：2017-07-14 08:55:54

【问题描述】：

我正在尝试将数组作为参数发送到服务器，但服务器没有接收到。服务器必须接收我发送的两个数组。但是在服务器中它们没有出现？？我不知道是我的错误还是服务器的错误？ 我的数组名称是 testAns 和 testQuest，我必须将其发送到参数：answer 和 quest。 我的代码：

let userID = UserDefaults.standard.string(forKey: "userID")
let artID = UserDefaults.standard.string(forKey: "index")
let myUrl = URL(string: "http://www.someurls.kz/modules/CheckTestF.php");
var request = URLRequest(url:myUrl!)
request.httpMethod = "POST"
var testAns = [Int]()
var testQuest = [Int]()
testAns = [131,123,23]
testQuest = [123,233,232]
let postString = "uID=97B436E41&idUser=\(userID!)&art_id=\(artID!)&answer=\(testAns)&quest=\(testQuest)"
print(postString)
print(testAns,testQuest)
request.httpBody = postString.data(using: String.Encoding.utf8);
let task = URLSession.shared.dataTask(with: request)  (data: Data?, response: URLResponse?, error: Error?) in
    if error != nil
    
        print("error=\(String(describing: error))")
        return
    
    do 
        _ = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
    
    catch 
        print(error)
    


task.resume()
    

【问题讨论】：

在提出基本问题之前参考更多信息。

@Ragul 我已经编辑了，如果你知道请帮忙，如果有什么不明白的，请告诉我

看看我的回答，如果您有任何进一步的帮助，请告诉我。

这很大程度上取决于您的服务器如何接收数组。请显示服务器端代码或服务器的 API 参考。否则你可能需要玩持久的猜谜游戏......

【参考方案1】：

我不知道如何在您的服务器端对该数组进行编码。 但暂时您可以尝试这种方式并检查您的数据库。

let postString = "uID=97B436E41&idUser=\(userID!)&art_id=\(artID!)&answer[0]=131&answer[1]=123&quest[0]=123&quest[1]=233"

【讨论】：

您需要序列化答案数组，然后附加到 postString。

它是服务器端的php数组。需要这样发送。

【参考方案2】：

您可以使用此时非常流行的Alamofire，它是AFNetworking的高级版 另外，我正在分享帮助您访问 API 的方法，您只需在此方法中传递字典对象，这将在两个块中为您提供响应，您可以根据需要使用它们。

1：不可达（）

2：处理程序（responseDict）

//MARK: *********** HIT POST SERVICE IN JSON FORM***********
    func hitPostServiceJsonForm(_ params:Dictionary<String,Any>,unReachable:(() -> Void),handler:@escaping ((Dictionary<String,Any>?) -> Void)) 
        if networkReachable() == false 
            unReachable()
        
        let BASE_URL = "http://mydoamain"
        var request = URLRequest(url: URL(string: BASE_URL)!)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.httpBody = try! JSONSerialization.data(withJSONObject: params, options: .prettyPrinted)

        print(BASE_URL)
        Alamofire.request(request).responseJSON  response in
            //print("Request: \(String(describing: response.request))")   // original url request
            //print("Response: \(String(describing: response.response))") // http url response
            print("Result: \(response.result)")                         // response serialization result
            switch response.result 
            case .success:
                if let jsonDict = response.result.value as? Dictionary<String,Any> 
                    print("Json Response: \(jsonDict)") // serialized json response
                    handler(jsonDict)
                
                else
                    handler(nil)
                
                if let data = response.data, let utf8Text = String(data: data, encoding: .utf8) 
                    print("Server Response: \(utf8Text)") // original server data as UTF8 string
                
                break
            case .failure(let error):
                handler(nil)
                print(error)
                break
            
        
    



func networkReachable() -> Bool 
     return (NetworkReachabilityManager()?.isReachable)!

【参考方案3】：

将您的数组转换为 json 字符串，然后尝试将其发送到服务器

func post_array()

    let userID = UserDefaults.standard.string(forKey: "userID")
    let artID = UserDefaults.standard.string(forKey: "index")
    let myUrl = URL(string: "http://www.someurls.kz/modules/CheckTestF.php");
    var request = URLRequest(url:myUrl!)
    request.httpMethod = "POST"
    var testAns = [Int]()
    var testQuest = [Int]()
    testAns = [131,123,23]
    testQuest = [123,233,232]

    var tempAns : NSString = ""
    do 
        let arrJson = try JSONSerialization.data(withJSONObject: testAns, options: .prettyPrinted)
        let string = NSString(data: arrJson, encoding: String.Encoding.utf8.rawValue)
        tempAns = string! as NSString
    catch let error as NSError
        print(error)
    

    var tempQuest : NSString = ""
    do 
        let arrJson = try JSONSerialization.data(withJSONObject: testQuest, options: .prettyPrinted)
        let string = NSString(data: arrJson, encoding: String.Encoding.utf8.rawValue)
        tempQuest = string! as NSString
    catch let error as NSError
        print(error)
    
    let postString = "uID=97B436E41&idUser=\(userID!)&art_id=\(artID!)&answer=\(tempAns)&quest=\(tempQuest)"
    print(postString)
    print(testAns,testQuest)
    request.httpBody = postString.data(using: String.Encoding.utf8);
    let task = URLSession.shared.dataTask(with: request)  (data: Data?, response: URLResponse?, error: Error?) in
        if error != nil
        
            print("error=\(String(describing: error))")
            return
        
        do 
            _ = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
        
        catch 
            print(error)
        

    
    task.resume()

【讨论】：

var tempAns : NSString = "" do let arrJson = try JSONSerialization.data(withJSONObject: testAns, options: .prettyPrinted) let string = NSString(data: arrJson, encoding: String.Encoding.utf8 .rawValue) tempAns = 字符串！ as NSString catch let error as NSError print(error)