ios - swift post请求编码加号变为空白

Question

最近我发现当我发送包含“+”号的post数据时，“+”会变成空白。例如 { dish_name: fish+chips }。这导致服务器端无法读取数据。所以我尝试跟随，我使用:

request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")

将我的请求编码为 UTF-8。但是，这一行导致我的发布数据变为空。我不知道为什么会这样。 或者有没有更好的解决方案来在发布方法中将“+”号保持为本身？

func PostMethod(url:NSURL,Data:String) {

   let request = NSMutableURLRequest(URL: url)
   let session = NSURLSession.sharedSession()
   let submitContent = Data
   request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
   request.HTTPMethod = "POST"
   request.HTTPBody = submitContent.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)


   //print("——request——")
   //print(request)

   let task = session.dataTaskWithRequest(request){
       data, response, error in


       if data != nil{

           let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding) as! String
           print(responseString)

           let jsonall = self.commonControl.StringToJson(responseString)
           if let dataFromString = jsonall["body"].stringValue.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false) {
               let json = JSON(data: dataFromString)
}}}}

Answer 1

您可以尝试将您的 + 转换成它的 ASCII 码。例如:

让 content = exampleString.stringByReplacingOccurrencesOfString("+", withString: "%2B", options: [], range: nil)

swift 3+

let content = exampleString.replacingOccurrences(of: "+", with: "%2B")