将curl命令转换为iOS [英] Converting curl command to iOS

问题描述

以下卷曲工作

  curl -G -Hapi_key：MYAPIKEYhttps://api.semantics3.com / test / v1 / products -d'q = {upc：70411576937}'
  

但是，在尝试将其转换为iOS时，我收到以下错误：

 错误域= NSURLErrorDomain Code = -1005连接丢失。 {NSErrorFailingURLStringKey = https：//api.semantics3.com/test/v1/products，...} 
  

我已经附上我的代码下面，但我相信我的问题是q =正在提交到URL的json数据之前。如果是这样，这是什么，我怎么把q =我的json数据之前？我不能确切地告诉，因为iOS的不可改变的能力，为我们提供无关的错误消息。谢谢。

  var urlString =https://api.semantics3.com/test/v1/products
 var request = NSMutableURLRequest（URL：NSURL（string：urlString）！）
 var response：NSURLResponse？ 
 var error：NSErrorPointer = nil 
 var reqText = [upc：70411576937] 
 var err：NSError？ 
 
 request.HTTPBody = NSJSONSerialization.dataWithJSONObject（reqText，options：nil，error：& err）
 request.HTTPMethod =GET
 request.addValue（MYAPIKEY ，forHTTPHeaderField：api_key）
 request.addValue（application / json，forHTTPHeaderField：Content-Type）
 request.addValue（application / json，forHTTPHeaderField：Accept）
 var session = NSURLSession.sharedSession（）
 
 var task = session.dataTaskWithRequest（request，completionHandler：{data，response，error  - > Void in 
 var strData = NSString data：data，encoding：NSUTF8StringEncoding）
 if（err！= nil）{
 println（err！.localizedDescription）
} 
 else {
 //这是错误打印
 println（error）
 var parseError：NSError？
 //解析数据
 let unparsedArray：AnyObject？= NSJSONSerialization.JSONObjectWithData（data，options：NSJSONReadingOptions。 AllowFragments，错误：& parseError）
 println（parseError）
如果let resp = unparsedArray as？ NSDictionary {
 println（resp）
} 
} 
}）
 task.resume（）
  

解决方案

正文不用于GET http方法。使用以下代码连接您的参数：

 扩展字符串{
 
 ///百分比转义值要添加到RFC 3986中指定的URL查询值
 /// 
 ///此百分比转义所有字符包含字母数字字符集和 - ，。，_ ，和〜。 
 /// 
 /// http://www.ietf.org/rfc/rfc3986.txt 
 /// 
 ///：返回：返回前缀转义字符串。 
 
 func stringByAddingPercentEncodingForURLQueryValue（） - >串？ {
 let characterSet = NSMutableCharacterSet.alphanumericCharacterSet（）
 characterSet.addCharactersInString（-._〜）
 
 return self.stringByAddingPercentEncodingWithAllowedCharacters（characterSet）
} 
 
} 
 
扩展字典{
 
 ///构建键和对象的HTTP参数字典的字符串表示
 /// 
 ///此百分比转义符合RFC 3986 
 /// 
 /// http://www.ietf.org/rfc/rfc3986.txt 
 /// 
 ///：returns：以key1 = value1& key2 = value2的形式表示的字符串，其中键和值是百分比转义
 
 func stringFromHttpParameters（） - > String {
 let parameterArray = map（self）{（key，value） - > 
中的字符串let percentEscapedKey =（key as！String）.stringByAddingPercentEncodingForURLQueryValue（）！ 
 let percentEscapedValue =（value as！String）.stringByAddingPercentEncodingForURLQueryValue（）！ 
 return\（percentEscapedKey）= \（percentEscapedValue）
} 
 
 return join（&，parameterArray）
} 
 
} 
 
 
 var urlString =https://api.semantics3.com/test/v1/products
 var reqText = [upc： 70411576937] 
 var err：NSError？ 
 
 let parameterString = reqText.stringFromHttpParameters（）
 let requestURL = NSURL（string：\（urlString）？\（parameterString））！ 
 
 var request = NSMutableURLRequest（URL：NSURL（string：urlString）！）
 var response：NSURLResponse？ 
 var error：NSError？ 
 
 request.HTTPMethod =GET
 request.addValue（MYAPIKEY，forHTTPHeaderField：api_key）
 request.addValue（application / json，forHTTPHeaderField： Content-Type）
 request.addValue（application / json，forHTTPHeaderField：Accept）
 var session = NSURLSession.sharedSession（）
  pre> 
 
 
 部分编辑：SWIFT 2.1（更新） 
  extension Dictionary {
 
 func stringFromHttpParameters（） - > String {
 let parameterArray = self.map {（key，value） - > 
中的字符串let percentEscapedKey =（key as！String）.stringByAddingPercentEncodingForURLQueryValue（）！ 
 let percentEscapedValue =（value as！String）.stringByAddingPercentEncodingForURLQueryValue（）！ 
 return\（percentEscapedKey）= \（percentEscapedValue）
} 
 
 return parameterArray.joinWithSeparator（&）
} 
 
} 
  
 
The following curl works 
curl -G -H "api_key: MYAPIKEY" https://api.semantics3.com/test/v1/products -d 'q={"upc":"70411576937"}'
However, upon trying to convert it to iOS I get the following error:
Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." {NSErrorFailingURLStringKey=https://api.semantics3.com/test/v1/products,...}
I have attached my code below but I believe that my problem is the "q=" right before the json data that is being submitted to the URL. If so, what is this called and how do I put "q=" before my json data? I can't exactly tell though, due to iOS' unfaltering ability to provide us with unrelated error messages. Thank you.
    var urlString = "https://api.semantics3.com/test/v1/products"
    var request = NSMutableURLRequest(URL: NSURL(string: urlString)!)
    var response: NSURLResponse?
    var error: NSErrorPointer = nil
    var reqText = ["upc": "70411576937"]
    var err: NSError?

    request.HTTPBody = NSJSONSerialization.dataWithJSONObject(reqText, options: nil, error: &err)
    request.HTTPMethod = "GET"
    request.addValue("MYAPIKEY", forHTTPHeaderField: "api_key")
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")
    var session = NSURLSession.sharedSession()

    var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
        var strData = NSString(data: data, encoding: NSUTF8StringEncoding)
        if(err != nil) {
            println(err!.localizedDescription)
        }
        else {
            //this is where the error is printed
            println(error)
            var parseError : NSError?
            // parse data
            let unparsedArray: AnyObject? = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments, error: &parseError)
            println(parseError)
            if let resp = unparsedArray as? NSDictionary {
                println(resp)
            }
        }
    })
    task.resume()

解决方案
Body is not used in GET http methods. Use the following code to concat your params:
extension String {

    /// Percent escape value to be added to a URL query value as specified in RFC 3986
    ///
    /// This percent-escapes all characters besize the alphanumeric character set and "-", ".", "_", and "~".
    ///
    /// http://www.ietf.org/rfc/rfc3986.txt
    ///
    /// :returns: Return precent escaped string.

    func stringByAddingPercentEncodingForURLQueryValue() -> String? {
        let characterSet = NSMutableCharacterSet.alphanumericCharacterSet()
        characterSet.addCharactersInString("-._~")

        return self.stringByAddingPercentEncodingWithAllowedCharacters(characterSet)
    }

}

extension Dictionary {

    /// Build string representation of HTTP parameter dictionary of keys and objects
    ///
    /// This percent escapes in compliance with RFC 3986
    ///
    /// http://www.ietf.org/rfc/rfc3986.txt
    ///
    /// :returns: String representation in the form of key1=value1&key2=value2 where the keys and values are percent escaped

    func stringFromHttpParameters() -> String {
        let parameterArray = map(self) { (key, value) -> String in
            let percentEscapedKey = (key as! String).stringByAddingPercentEncodingForURLQueryValue()!
            let percentEscapedValue = (value as! String).stringByAddingPercentEncodingForURLQueryValue()!
            return "\(percentEscapedKey)=\(percentEscapedValue)"
        }

        return join("&", parameterArray)
    }

}


var urlString = "https://api.semantics3.com/test/v1/products"
var reqText = ["upc": "70411576937"]
var err: NSError?

let parameterString = reqText.stringFromHttpParameters()
let requestURL = NSURL(string:"\(urlString)?\(parameterString)")!

var request = NSMutableURLRequest(URL: NSURL(string: urlString)!)
var response: NSURLResponse?
var error: NSError?

request.HTTPMethod = "GET"
request.addValue("MYAPIKEY", forHTTPHeaderField: "api_key")
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
var session = NSURLSession.sharedSession()
PARTIAL EDIT: SWIFT 2.1 (updated)
extension Dictionary {

    func stringFromHttpParameters() -> String {
        let parameterArray = self.map { (key, value) -> String in
            let percentEscapedKey = (key as! String).stringByAddingPercentEncodingForURLQueryValue()!
            let percentEscapedValue = (value as! String).stringByAddingPercentEncodingForURLQueryValue()!
            return "\(percentEscapedKey)=\(percentEscapedValue)"
        }

        return parameterArray.joinWithSeparator("&")
    }

}


                        
这篇关于将curl命令转换为iOS的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！