json swift ios - 发送参数到php-sql

Question

你好，我正尝试从SWIFT IOS应用程序使用JSON发送一个参数到PHP-SQL数据库。已经尝试了几个例子sycronus和asyncronus，但我没有得到它的工作。

跟上JSON参数字符串的转换为将要在对方接收的格式..

（当我在浏览器中尝试将应用程序本身没有work..but）困扰？下面是代码 - 从操场 （响应为API响应：可选的（缺少JSON）

// Playground - noun: a place where people can play 

import UIKit 
import CoreLocation 
var str = "Hello, playground debug use of JSON and PHP" 
import Foundation 


let url = NSURL(string:"http://mywebserver-replaced.no/POSITION/update.php?") 
let cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData 
var request = NSMutableURLRequest(URL: url!, cachePolicy: cachePolicy, timeoutInterval: 2.0) 
request.HTTPMethod = "POST" 

// set Content-Type in HTTP header 
let boundaryConstant = "----------V2ymHFg03esomerandomstuffhbqgZCaKO6jy"; 
let contentType = "multipart/form-data; boundary=" + boundaryConstant 
NSURLProtocol.setProperty(contentType, forKey: "Content-Type", inRequest: request) 

// set data 
var dataString = " " 
dataString = "json={\"FBID\":10,\"Driving\":1,\"Latitude\":\"68.123\",\"Longitude\":\"22.124\",\"Time\":\"18:24\",\"Date\":\"07.10.2014\",\"Heading\":90}" 
let requestBodyData = (dataString as NSString).dataUsingEncoding(NSUTF8StringEncoding) 
request.HTTPBody = requestBodyData 

println("\(requestBodyData)") // This will print "Optional(<6a736f6e...and so on.. 
           // And except the optional it is quite correct.. json={ 

request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type") 

// set content length 
// NSURLProtocol.setProperty(requestBodyData.length, forKey: "Content-Length", inRequest: request) 

var response: NSURLResponse? = nil 
var error: NSError? = nil 
let reply = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&error) 

let results = NSString(data:reply!, encoding:NSUTF8StringEncoding) 
println("API Response: \(results)") 

什么我dooing错

Answer 1

要设置错误的Content-Type

request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type") 

应该

request.setValue("application/json", forHTTPHeaderField: "Content-Type") 

而且还

dataString = "json={\"FBID\":10,\"Driving\":1,\"Latitude\":\"68.123\",\"Longitude\":\"22.124\",\"Time\":\"18:24\",\"Date\":\"07.10.2014\",\"Heading\":90}" 

取出JSON =，这使得身体不是一个有效的JSON。