用swift发送http请求

我想用swift发送一个http请求到PHP服务器。我管理发送数据，并阅读服务器的响应。我只是想根据请求类型是存在于JSON请求用swift发送http请求

这里我的PHP服务器上做不同的动作是我的发送请求的方法：

func sendHttpRequests(data : Dictionary<String, AnyObject>) //-> NSDictionary 
{ 
    let url = NSURL (string : "http://aaa.bbb.ccc.ddd")! 
    let request:NSMutableURLRequest = NSMutableURLRequest(URL : url) 

    let payload1 = "\"r\":\"login\"" 
    request.HTTPMethod = "POST" 

    request.HTTPBody = payload1.dataUsingEncoding(NSUTF8StringEncoding); 


    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue()) 
     { 
      (response, data, error) in 

      if let httpResponse = response as? NSHTTPURLResponse { 
       let responseCode = httpResponse.statusCode 
       print("Request Status \(responseCode)") 
      } 
      do 
      { 
       let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .AllowFragments) 

       print("Json received \(json)") 

       if let currItem = json["myKey"] as? String 
       { 
        print(currItem) 
       } 
      } 
      catch 
      { 
       print("error: \(error)") 
      } 
    } 
}

当我刚刚发回一个响应此PHP剧本我得到回应成功：

<?php 
$arr = array("myKey" => "myValue"); 
echo json_encode($arr); 
?>

相反，当我尝试这样的事：

<?php 
$postVar = $_POST['r']; 

if (!empty($postVar)) 
{ 
    $arr = array("status" => "it's ok"); 
    echo json_encode($arr); 
} 
else 
{ 
    $arr = array("status" => "something wrong"); 
    echo json_encode($arr); 
} 
?>

我得到这个错误：

Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}

来源

2016-02-26 Marco Castano

马可，

不要使用NSMutableURLRequests，使用会话......前者是由苹果弃用。

下面是一个例子..

func getMetaData(lePath:String, completion: (string: String?, error: ErrorType?) -> Void) { 
// **** get_metadata **** 
    let request = NSMutableURLRequest(URL: NSURL(string: "https://api.dropboxapi.com/2/files/get_metadata")!) 
    let session = NSURLSession.sharedSession() 
    request.HTTPMethod = "POST" 

    request.addValue("Bearer ab-blah", forHTTPHeaderField: "Authorization") 
    request.addValue("application/json",forHTTPHeaderField: "Content-Type") 
    request.addValue("path", forHTTPHeaderField: lePath) 
    let cursor:NSDictionary? = ["path":lePath] 
    do { 
     let jsonData = try NSJSONSerialization.dataWithJSONObject(cursor!, options: []) 
     request.HTTPBody = jsonData 
     print("json ",jsonData) 
    } catch { 
     print("snafoo alert") 
    } 

    let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in 
     if let error = error { 
      completion(string: nil, error: error) 
      return 
     } 
     let strData = NSString(data: data!, encoding: NSUTF8StringEncoding) 
     print("Body: \(strData)\n\n") 
     do { 
      let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions.MutableContainers); 
      self.jsonParser(jsonResult,field2file: "ignore") 
      for (key, value) in self.parsedJson { 
       print("key2 \(key) value2 \(value)") 
      } 

      completion(string: "", error: nil) 
     } catch { 
      completion(string: nil, error: error) 
     } 
    }) 
    task.resume() 

}

来源

2016-02-26 15:28:52 user3069232

lePath是什么？ –

我只是用这个方法替换那个方法，但问题仍然存在 –

lePath是这个调用的一个参数，你可以忽略它。发布你的修改过的代码呢？ – user3069232

马可，

我建议使用alamofire

看看这个例子

Alamofire.request(.GET, "https://httpbin.org/get", parameters: ["foo": "bar"]) 
     .responseJSON { response in 
      print(response.request) // original URL request 
      print(response.response) // URL response 
      print(response.data)  // server data 
      print(response.result) // result of response serialization 

      if let JSON = response.result.value { 
       print("JSON: \(JSON)") 
      } 
     }

很容易，序列化可以正常使用

您可以将它与pod一起安装在一行中。

来源

2016-03-03 10:28:59

用swift发送http请求

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