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标题: php - JSON请求发送空数据(swift) [打印本页]

作者: 菜鸟教程小白 时间: 2022-12-11 19:31
标题: php - JSON请求发送空数据(swift)

我的 iOS 应用正在向网络服务发送空数据。我花了几个小时寻找解决方案，但没有任何效果。应用程序应该通过 php 脚本向数据库发送一个 kontrah 号码。然后数据库必须识别是否可以在数据库中找到康特拉数。然后，如果数字正确，我将收到来自数据库服务器的请求。问题是我发送的号码肯定是正确的。我检查了发送到数据库的内容，但都是空的:

{"kontrah":null,"telefon":null,"opis":null,"afakt":null}

我在 Android Studio 中使用 Java 制作了相同的应用程序，但一切正常。

我的代码:

@IBAction func submitAction(_ sender: AnyObject) {
    let kontrah: String = fkontrah.text!
     let telefon: String = ftelefon.text!



    let json = [ "kontrah" : (kontrah), "telefon" : (telefon), "opis" : (selectedvalue), "afakt" : (selectedafakt)  ]

    print (json)

    do {
        let jsonData = try JSONSerialization.data(withJSONObject: json, options: .prettyPrinted)
        print(jsonData)
        // create post request
        let url = NSURL(string: "http://hetman.pl/ios/post2.php")!
        let request = NSMutableURLRequest(url: url as URL)
        request.httpMethod = "OST"

        // insert json data to the request
        request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
        request.httpBody = jsonData



        let task = URLSession.shared.dataTask(with: request as URLRequest){ data, response, error in
            if error != nil{
                return
            }

            do {
                let t  = try JSONSerialization.jsonObject(with: data!, options: []) as? [String:AnyObject]
                print(t)

            } catch {
                print("Error  43-> \(error)")
            }
        }
        let alert = UIAlertController(title: "Wysłano poprawnie", message: "", preferredStyle: UIAlertControllerStyle.alert)
        alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil))
        self.present(alert, animated: true, completion: nil)


        task.resume()


    }

    catch {
        //handle error. Probably return or mark function as throws
        print(error)
        return
    }
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    self.view.endEditing(true)
}

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return(true)
}

}

日志:

2017-12-29 15:59:43.867463+0100 Hetman4[10692:4029622] Failed to set (titleLabel.adjustsFontSizeToFitWidth) user defined inspected property on (UITextView): [<UITextView 0x7fa1ad829e00> valueForUndefinedKey:]: this class is not key value coding-compliant for the key titleLabel.
2017-12-29 15:59:47.717492+0100 Hetman4[10692:4029622] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/bartoszlucinski/Library/Developer/CoreSimulator/Devices/3BE9103E-97CA-4E0B-AE53-6196EE08C49D/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2017-12-29 15:59:47.717874+0100 Hetman4[10692:4029622] [MC] Reading from private effective user settings.
2017-12-29 15:59:52.225804+0100 Hetman4[10692:4029622] Can't find keyplane that supports type 4 for keyboard iPhone-PortraitChoco-NumberPad; using 4072550144015629828_PortraitChoco_iPhone-Simple-Pad_Default
["telefon": "510356448", "kontrah": "1400-685", "opis": "Świnia", "afakt": "0"]
94 bytes
2017-12-29 15:59:57.074868+0100 Hetman4[10692:4029622] Failed to set (titleLabel.adjustsFontSizeToFitWidth) user defined inspected property on (UITextView): [<UITextView 0x7fa1b0096400> valueForUndefinedKey:]: this class is not key value coding-compliant for the key titleLabel.
2017-12-29 15:59:57.628832+0100 Hetman4[10692:4029622] Presenting view controllers on detached view controllers is discouraged <Hetman4.ViewController: 0x7fa1ac428ef0>.
Optional(["error": <null>, "result": kontrah  doesn't exist, "unAuthorizedRequest": 0, "success": 1])

PHP 脚本:

<?php
$kontrah = urlencode($_POST['kontrah']);
$telefon = urlencode($_POST['telefon']);
$opis = urlencode($_POST['opis']);
$afakt = urlencode($_POST['afakt']);

$url = 'https://hetman.e4b.com.pl/api/services/app/zlecenie/FormAddZlecenie?kontrah='.$kontrah.'&telefon='.$telefon.'&opis='.$opis.'&afakt='.&afakt;

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);


$results = curl_exec($ch);

curl_close($ch);
?>

Best Answer-推荐答案

几个问题:

您的服务器期待 application/x-www-form-urlencoded 请求，而不是 JSON 请求。响应是 JSON，但请求不是。

当我使用 hetman.pl URL，但它重定向到 www.hetman.pl，但将 POST 替换为获取。当我直接向 www.hetman.pl 发送请求时，我收到了不同的消息。不过，我看不懂它们，所以我无法评论这是好是坏。

与手头的问题无关，可以稍微整理一下 Swift 代码，将 NSURL 和 NSURLRequest 替换为 URL和 URLRequest。

综合起来，你会得到如下结果:

let parameters = ["kontrah" : kontrah, "telefon" : telefon, "opis" : selectedvalue, "afakt" : selectedafakt] let url = URL(string: "http://www.hetman.pl/ios/post2.php")! var request = URLRequest(url: url) request.httpMethod = "OST" request.setValue("application/json", forHTTPHeaderField: "Accept") request.setValue("application/x-www-form-urlencoded; charset=utf-8", forHTTPHeaderField: "Content-Type") request.setBodyContent(parameters) let task = URLSession.shared.dataTask(with: request) { data, response, error in guard let data = data, error == nil else { print(error ?? "Unknown error") return } do { let t = try JSONSerialization.jsonObject(with: data) as? [String:AnyObject] print(t ?? "Invalid") } catch { print("Error 43-> \(error)") } } task.resume()

在哪里

extension URLRequest { /// Populate the HTTPBody of `application/x-www-form-urlencoded` request /// /// - parameter parameters: A dictionary of keys and values to be added to the request mutating func setBodyContent(_ parameters: [String : String]) { let parameterArray = parameters.map { (key, value) -> String in let encodedKey = key.addingPercentEncoding(withAllowedCharacters: .urlQueryValueAllowed)! let encodedValue = value.addingPercentEncoding(withAllowedCharacters: .urlQueryValueAllowed)! return "\(encodedKey)=\(encodedValue)" } httpBody = parameterArray .joined(separator: "&") .data(using: .utf8) } } extension CharacterSet { /// Character set containing characters allowed in query value as outlined in RFC 3986. /// /// RFC 3986 states that the following characters are "reserved" characters. /// /// - General Delimiters: ":", "#", "[", "]", "@", "?", "/" /// - Sub-Delimiters: "!", "$", "&", "'", "(", ")", "*", "+", ",", ";", "=" /// /// In RFC 3986 - Section 3.4, it states that the "?" and "/" characters should not be escaped to allow /// query strings to include a URL. Therefore, all "reserved" characters with the exception of "?" and "/" /// should be percent-escaped in the query string. /// /// - parameter string: The string to be percent-escaped. /// /// - returns: The percent-escaped string. static var urlQueryValueAllowed: CharacterSet = { let generalDelimitersToEncode = ":#[]@" // does not include "?" or "/" due to RFC 3986 - Section 3.4 let subDelimitersToEncode = "!$&'()*+,;=" var allowed = CharacterSet.urlQueryAllowed allowed.remove(charactersIn: generalDelimitersToEncode + subDelimitersToEncode) return allowed }() }

关于php - JSON请求发送空数据(swift)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48025086/

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