对php的Swift 4 Json请求
我需要你的帮助。 我试图用Xcode Swift4编写json请求 对PHP的Json请求：对php的Swift 4 Json请求,php,json,swift,request,swift4,Php,Json,Swift,Request,Swift4,我需要你的帮助。 我试图用Xcode Swift4编写json请求 对PHP的Json请求： var request = URLRequest(url: URL(string: "http://example.net/stock_service3.php")!) request.httpMethod = "POST" let postString = "id=112m&name=123" request.httpBody = postStr
var request = URLRequest(url: URL(string: "http://example.net/stock_service3.php")!)
request.httpMethod = "POST"
let postString = "id=112m&name=123"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil else { // check for fundamental networking error
print("error=\(error)")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(response)")
}
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(responseString)")
}
task.resume()
<?php
// Create connection
$con=mysqli_connect("example.mysql:3306","example.net","3445432FruRjCAFk","example.net");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$postdata = json_decode(file_get_contents("php://input"),TRUE);
$id= $postdata["id"];
$name = $postdata["name"];
// Store values in an array
$returnValue = array($id,$name);
// Send back request in JSON format
echo json_encode($returnValue);
// Select all of our stocks from table 'stock_tracker'
$sql ="SELECT m.*
, ( ACOS( COS( RADIANS( $id) )
* COS( RADIANS( m.latitude ) )
* COS( RADIANS( m.longitude ) - RADIANS( $name) )
+ SIN( RADIANS($id) )
* SIN( RADIANS( m.Latitude) )
)
* 6371
) AS distance_in_km
FROM TankBilliger m
HAVING distance_in_km <= 100
ORDER BY distance_in_km ASC
LIMIT 100";
// Confirm there are results
if ($result = mysqli_query($con, $sql))
{
// We have results, create an array to hold the results
// and an array to hold the data
$resultArray = array();
$tempArray = array();
// Loop through each result
while($row = $result->fetch_object())
{
// Add each result into the results array
$tempArray = $row;
array_push($resultArray, $tempArray);
}
// Encode the array to JSON and output the results
echo json_encode($resultArray);
}
// Close connections
mysqli_close($con);
?>
import Foundation
protocol FeedmodelProtocol: class {
func itemsDownloaded(items: NSArray)
}
class Feedmodel: NSObject, URLSessionDataDelegate {
weak var delegate: FeedmodelProtocol!
let urlPath = "http://example.net/stock_service3.php" //Change to the web address of your stock_service.php file
func downloadItems() {
let url: URL = URL(string: urlPath)!
let defaultSession = Foundation.URLSession(configuration: URLSessionConfiguration.default)
let task = defaultSession.dataTask(with: url) { (data, response, error) in
if error != nil {
print("Error")
}else {
print("stocks downloaded")
self.parseJSON(data!)
}
}
task.resume()
}
func parseJSON(_ data:Data) {
var jsonResult = NSArray()
do{
jsonResult = try JSONSerialization.jsonObject(with: data, options:JSONSerialization.ReadingOptions.allowFragments) as! NSArray
} catch let error as NSError {
print(error)
}
var jsonElement = NSDictionary()
let stocks = NSMutableArray()
for i in 0 ..< jsonResult.count
{
jsonElement = jsonResult[i] as! NSDictionary
let stock = Stockmodel()
//the following insures none of the JsonElement values are nil through optional binding
if let Datum = jsonElement["Datum"] as? String,
let Tankstelle = jsonElement["Tankstelle"] as? String,
let Kraftstoff1 = jsonElement["Kraftstoff1"] as? String,
let Preis1 = jsonElement["Preis1"] as? String,
let Kraftstoff2 = jsonElement["Kraftstoff2"] as? String,
let Preis2 = jsonElement["Preis2"] as? String,
let Notiz = jsonElement["Notiz"] as? String,
let longitude = jsonElement["longitude"] as? String,
let latitude = jsonElement["latitude"] as? String
{
print (Datum)
print(Tankstelle)
print(Kraftstoff1)
print(Preis1)
print(Kraftstoff2)
print(Preis2)
print(Notiz)
print(longitude)
print(latitude)
stock.Datum = Datum
stock.Tankstelle = Tankstelle
stock.Kraftstoff1 = Kraftstoff1
stock.Preis1 = Preis1
stock.Kraftstoff2 = Kraftstoff2
stock.Preis2 = Preis2
stock.Notiz = Notiz
stock.longitude = longitude
stock.latitude = latitude
}
stocks.add(stock)
}
DispatchQueue.main.async(execute: { () -> Void in
self.delegate.itemsDownloaded(items: stocks)
})
}
}
代码错误：
jsonElement=jsonResult[i]as！NSDictionary我认为swift只连接https，我这样说是因为我编写了一个swift 4 iOS应用程序，与现有的Android Java应用程序一起使用（两者都使用PHP服务器并通过json进行通信），我讨厌将整个服务器迁移到https并迁移所有Android用户。也许有办法解决这个问题，但我认为这是一个“问题”。找到导致崩溃的那行代码，因为您显示的代码中似乎没有出现该错误。没有（NS）字典提及。这是一行：jsonElement=jsonResult[i]as！有什么背景吗？因为你没有写这条线，也不知道你是怎么做到的jsonResult[i]NSNull