son - ios Sube imagen y texto usando HTTP POST

que formato son las fotos del iphone

Question

Gracias por leer.

Soy nuevo en iOS y estoy tratando de subir una imagen y un texto usando la multi-part form encoding en iOS.

El equivalente curl es algo como esto: curl -F "param1=value1" -F "[email protected]" " http://some.ip.address:5000/upload "

El comando curl anterior devuelve la respuesta correcta esperada en JSON.

Problema: recibo una solicitud HTTP 400, lo que significa que estoy haciendo algo mal al componer el cuerpo HTTP POST.

Lo que hice: como referencia, probé la aplicación Flickr API para iOS "¡El tamaño de POST es demasiado grande!" y Objetivo C: ¿Cómo subir imágenes y texto usando HTTP POST? . Pero, sigo obteniendo un HTTP 400.

Intenté ASIHttpRequest pero tuve un problema diferente allí (nunca se llamó a la devolución de llamada). Pero no investigé más sobre eso porque escuché que el desarrollador dejó de admitir la biblioteca: http://allseeing-i.com/[request_release] ;

¿Podría alguien ayudarme?

Answer 1

Aquí está mi biblioteca de kit de red similar para cargar archivos como formulario multiparte:

WebRequest *request = [[WebRequest alloc] initWithPath:@"...documents/create.json"];

// optional attributes
request.delegate = delegate;
request.notificationName = @"NotificationDocumentUploaded";
request.queue = myQueue;

NSMutableData *body = [NSMutableData data];
NSString *boundary = @"TeslaSchoolProjectFormBoundary";

[body appendPartName:@"document[name]" value:@"Test" boundary:boundary];
[body appendPartName:@"document[description]" value:@"This is a description" boundary:boundary];
[body appendPartName:@"document[category]" value:@"Drama" boundary:boundary];
...
[body appendPartName:@"commit" value:@"Save" boundary:boundary];
NSData *fileData = [[NSData alloc] initWithContentsOfURL:someFileURL];
[body appendPartFile:fileName name:@"document[file]" data:fileData mimeType:mimeType boundary:boundary];
[body appendData:[[NSString stringWithFormat:@"--%@--/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPBody:body];

NSString *bodyLength = [NSString stringWithFormat:@"%lu",(unsigned long)[body length]];
[request addValue:bodyLength forHTTPHeaderField:@"Content-Length"];
[request setValue:[NSString stringWithFormat:@"multipart/form-data; charset=utf-8; boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"];


// optional values
[request addValue:@"gzip,deflate,sdch" forHTTPHeaderField:@"Accept-Encoding"];
[request addValue:@"max-age=0" forHTTPHeaderField:@"Cache-Control"];
[request addValue:@"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" forHTTPHeaderField:@"Accept"];
[request addValue:@"en-US,en;q=0.8,hr;q=0.6,it;q=0.4,sk;q=0.2,sl;q=0.2,sr;q=0.2" forHTTPHeaderField:@"Accept-Language"];


[request setHTTPMethod:@"POST"];
[WebRequestProcessor process:request];

Use el delegado para notificar sobre el progreso de carga.

Use el notificationName para notificar cuando la solicitud ha finalizado.

Use la cola para agregar esta solicitud en su cola de operaciones para que se procese en el momento adecuado.

Answer 2

Aquí hay un código de mi aplicación para publicar una imagen en nuestro servidor web:

// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
[_params setObject:[NSString stringWithFormat:@"%d", userId] forKey:[NSString stringWithString:@"userId"]];
[_params setObject:[NSString stringWithFormat:@"%@",title] forKey:[NSString stringWithString:@"title"]];

// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];

// string constant for the post parameter ''file''. My server uses this name: `file`. Your''s may differ 
NSString* FileParamConstant = [NSString stringWithString:@"file"];

// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@""]; 

// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];                                    
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod:@"POST"];

// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];

// post body
NSMutableData *body = [NSMutableData data];

// add params (all params are strings)
for (NSString *param in _params) {
    [body appendData:[[NSString stringWithFormat:@"--%@/r/n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"%@/"/r/n/r/n", param] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"%@/r/n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}

// add image data
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
if (imageData) {
    [body appendData:[[NSString stringWithFormat:@"--%@/r/n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"%@/"; filename=/"image.jpg/"/r/n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"Content-Type: image/jpeg/r/n/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:imageData];
    [body appendData:[[NSString stringWithFormat:@"/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];
}

[body appendData:[[NSString stringWithFormat:@"--%@--/r/n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];

// setting the body of the post to the reqeust
[request setHTTPBody:body];

// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];

// set URL
[request setURL:requestURL];

Answer 3

Aquí hay una versión de Swift. Tenga en cuenta que si no desea enviar datos de formulario, es importante enviar el límite de formulario vacío. Flask, en particular, espera que los datos del formulario sean seguidos por los datos del archivo y no llenará request.files sin el primer límite.

  let composedData = NSMutableData()

  // Set content type header
  let BoundaryConstant = "--------------------------3d74a90a3bfb8696"
  let contentType = "multipart/form-data; boundary=/(BoundaryConstant)"
  request.setValue(contentType, forHTTPHeaderField: "Content-Type")

  // Empty form boundary
  composedData.appendData("--/(BoundaryConstant)/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

  // Build multipart form to send image
  composedData.appendData("--/(BoundaryConstant)/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)
  composedData.appendData("Content-Disposition: form-data; name=/"file/"; filename=/"image.jpg/"/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)
  composedData.appendData("Content-Type: image/jpeg/r/n/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)
  composedData.appendData(rawData!)
  composedData.appendData("/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)
  composedData.appendData("--/(BoundaryConstant)--/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

  request.HTTPBody = composedData

  // Get content length
  let length = "/(composedData.length)"
  request.setValue(length, forHTTPHeaderField: "Content-Length")

Answer 4

La respuesta de XJones funcionó como el encanto.

Pero él no mencionó / ​​declaró las variables _params , BoundaryConstant y requestURL . Entonces, pensé en publicar esa parte como un complemento a su publicación, para que pueda ayudar a otros en el futuro.

// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
[_params setObject:[NSString stringWithFormat:@"%d", userId] forKey:[NSString stringWithString:@"userId"]];
[_params setObject:[NSString stringWithFormat:@"%@",title] forKey:[NSString stringWithString:@"title"]];

// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];

// string constant for the post parameter ''file''. My server uses this name: `file`. Your''s may differ 
NSString* FileParamConstant = [NSString stringWithString:@"file"];

// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@""]; 

Como mencioné Earler, esta no es una respuesta en sí misma, solo un complemento para la publicación de XJones .

Answer 5

Para http post imagen y nombre de usuario y contraseña que envían a través del método de publicación

 NSString *str=[NSString stringWithFormat:@"[e-mail]",appdel.baseUrl];
 NSString *urlString = [NSString stringWithFormat:@"%@",str];

 NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
 [request setURL:[NSURL URLWithString:urlString]];
 [request setHTTPMethod:@"POST"];
 NSMutableData *body = [NSMutableData data];
 NSString *boundary = @"---------------------------14737809831466499882746641449";
 NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
 [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

 [body appendData:[[NSString stringWithFormat:@"--%@/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"Content-Disposition: form-data; name=/"file/"; filename=/"a.jpg/"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"Content-Type: application/octet-stream/r/n/r/n" dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[NSData dataWithData:imgData]];
 [body appendData:[@"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];

 //  parameter username

 [body appendData:[[NSString stringWithFormat:@"--%@/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"username/"/r/n/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];

 [body appendData:[userName.text dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];


 //  parameter token
 [body appendData:[[NSString stringWithFormat:@"--%@/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"email/"/r/n/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];

 [body appendData:[eMail.text dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];


 // parameter method
 [body appendData:[[NSString stringWithFormat:@"--%@/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"pass/"/r/n/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];

 [body appendData:[passWord.text dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];


 //parameter method
 NSLog(@"%@",countryCode);
 [body appendData:[[NSString stringWithFormat:@"--%@/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"country/"/r/n/r/n"] dataUsingEncoding:NSUTF8StringEncoding]];

 [body appendData:[countryCode dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[@"/r/n" dataUsingEncoding:NSUTF8StringEncoding]];

 // close form
 [body appendData:[[NSString stringWithFormat:@"--%@--/r/n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];


 // setting the body of the post to the reqeust
 [request setHTTPBody:body];


 NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
 // NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
 NSDictionary *dict=[NSJSONSerialization JSONObjectWithData:returnData options:NSJSONReadingMutableLeaves error:nil];
 Nslog(@"%@",dict);
 //

Answer 6

Puedo mostrar un ejemplo de carga de un archivo .txt a un servidor con NSMutableURLRequest y NSURLSessionUploadTask con la ayuda de un script php .

-(void)uploadFileToServer : (NSString *) filePath
{
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://YourURL.com/YourphpScript.php"]];
[request setHTTPMethod:@"POST"]; 
[request addValue:@"File Name" forHTTPHeaderField:@"FileName"];
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultConfigObject];

NSURLSessionUploadTask* uploadTask = [defaultSession uploadTaskWithRequest:request fromFile:[NSURL URLWithString:filePath] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)
                                      {
                                          NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                          if (error || [httpResponse statusCode]!=202)
                                          {

                                              //Error
                                          }
                                          else
                                          {
                                             //Success
                                          }
                                          [defaultSession invalidateAndCancel];
                                      }];
[uploadTask resume];
}

php Script

<?php 
$request_body = @file_get_contents(''php://input'');
foreach (getallheaders() as $name => $value) 
{
    if ($FileName=="FileName") 
    {
        $header=$value;
        break;
    }
}   
$uploadedDir = "directory/";
@mkdir($uploadedDir);
file_put_contents($uploadedDir."/".$FileName.".txt",
$request_body.PHP_EOL, FILE_APPEND);
header(''X-PHP-Response-Code: 202'', true, 202);  
?>       

Answer 7

Suba la imagen con los datos del formulario usando la clase NSURLConnection en Swift 2.2 :

    func uploadImage(){
        let imageData = UIImagePNGRepresentation(UIImage(named: "dexter.jpg")!)

        if imageData != nil{
            let str = "https://staging.mywebsite.com/V2.9/uploadfile"
            let request = NSMutableURLRequest(URL: NSURL(string:str)!)
            request.HTTPMethod = "POST"

            let boundary = NSString(format: "---------------------------14737809831466499882746641449")

            let contentType = NSString(format: "multipart/form-data; boundary=%@",boundary)
            request.addValue(contentType as String, forHTTPHeaderField: "Content-Type")

            let body = NSMutableData()

            // append image data to body
            body.appendData(NSString(format: "/r/n--%@/r/n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)
            body.appendData(NSString(format:"Content-Disposition: form-data; name=/"file/"; filename=/"img.jpg/"//r/n").dataUsingEncoding(NSUTF8StringEncoding)!)
            body.appendData(NSString(format: "Content-Type: application/octet-stream/r/n/r/n").dataUsingEncoding(NSUTF8StringEncoding)!)
            body.appendData(imageData!)
            body.appendData(NSString(format: "/r/n--%@/r/n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)

            request.HTTPBody = body

            do {
                let returnData = try NSURLConnection.sendSynchronousRequest(request, returningResponse: nil)
                let returnString = NSString(data: returnData, encoding: NSUTF8StringEncoding)
                print("returnString = /(returnString!)")
            }
            catch let  error as NSError {
                print(error.description)
            }
        }
    }

Nota: utilice sendAsynchronousRequest método sendAsynchronousRequest lugar de sendSynchronousRequest para cargar / descargar datos para evitar el bloqueo del hilo principal. Aquí utilicé sendSynchronousRequest solo para fines de prueba.

Answer 8

Use AFNetworking; Coloque otros parámetros en el diccionario de parámetros y anexe los datos de la imagen en los datos del formulario.

//Upload Image Using AFNetworking

-(BOOL)uploadImageAFNetworkingWithURL:(NSString *)path andImage:(UIImage *)image andImageNameWithExtension:(NSString *)strImageName andParamDict:(NSDictionary *)dictParam andKeyForUploadingImage:(NSString *)keyUplaodImg{

    NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
    NSString *strError = EMPTY_STRING;

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
     manager.requestSerializer = [AFJSONRequestSerializer serializer];
    [manager POST:path parameters:dictParam constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

        [formData appendPartWithFileData:imageData name:keyUplaodImg fileName:strImageName mimeType:@"image/jpeg"];

    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"success = %@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"error = %@", error);
        NSLog(@"Response = %@", operation);
        [strError stringByAppendingString:STR_ERR_MESSAGE];
    }];
    if(strError.length>0){
        return NO;
    }else{
        return YES;
    }
}

Answer 9

aquí está el código rápido de trabajo traducido del código provisto por @xjones. Muchas gracias por su ayuda compañero. La tuya fue la única forma que funcionó para mí. Utilicé este método para enviar 1 imagen y otro parámetro a un servicio web hecho en asp.net

                    let params = NSMutableDictionary()

                    let boundaryConstant  = "----------V2y2HFg03eptjbaKO0j1"

                    let file1ParamConstant = "file1"
                    params.setObject(device_id!, forKey: "deviceID")

                    let requestUrl = NSURL(string: "/(siteurl):/(port)/FileUpload/Upload")

                    let request = NSMutableURLRequest()

                    request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData
                    request.HTTPShouldHandleCookies=false
                    request.timeoutInterval = 30
                    request.HTTPMethod = "POST"

                    let contentType = "multipart/form-data; boundary=/(boundaryConstant)"

                    request.setValue(contentType, forHTTPHeaderField: "Content-Type")

                    let body = NSMutableData()

                    // parameters

                    for param in params {

                    body.appendData("--/(boundaryConstant)/r/n" .dataUsingEncoding(NSUTF8StringEncoding)! )
                    body.appendData("Content-Disposition: form-data; name=/"/(param)/"/r/n/r/n" .dataUsingEncoding(NSUTF8StringEncoding)!)
                    body.appendData("/(param.value)/r/n" .dataUsingEncoding(NSUTF8StringEncoding)!)

                    }
                    // images

                    // image begin
                    body.appendData("--/(boundaryConstant)/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

                    body.appendData("Content-Disposition: form-data; name=/"/(file1ParamConstant)/"; filename=/"image.jpg/"/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)
                    body.appendData("Content-Type: image/jpeg/r/n/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

                    body.appendData(passportImageData)
                    body.appendData("/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

                    // image end



                    body.appendData("--/(boundaryConstant)--/r/n".dataUsingEncoding(NSUTF8StringEncoding)!)

                    request.HTTPBody  = body
                    let postLength = "/(body.length)"
                    request.setValue(postLength, forHTTPHeaderField: "Content-Length")
                    request.URL = requestUrl

                    var serverResponse = NSString()

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

                        if error != nil
                        {
                            print("error=/(error)")
                            return
                        }


                        print("response = /(response)")


                        let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
                        print("responseString = /(responseString!)")
                        serverResponse = responseString!


                        }

                            task.resume()

Answer 10

use below code. it will work fine for me.

+(void) sendHttpRequestWithArrayContent:(NSMutableArray *) array 
ToUrl:(NSString *) strUrl withHttpMethod:(NSString *) strMethod 
withBlock:(dictionary)block
{
if (![Utility isConnectionAvailableWithAlert:TRUE])
{
    [Utility showAlertWithTitle:@"" andMessage:@"No internet connection available"];
}


NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;

[request setURL:[NSURL URLWithString:strUrl]];
[request setTimeoutInterval:120.0];
[request setHTTPMethod:strMethod];

NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];

NSMutableData *body=[[NSMutableData alloc]init];

for (NSMutableDictionary *dict in array)
{
    if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[NSString class]])
    {
        [body appendData:[self contentDataFormStringWithValue:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
    }
    else if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[UIImage class]])
    {
        [body appendData:[self contentDataFormImage:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
    }
    else if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[NSMutableDictionary class]])
    {
        [body appendData:[self contentDataFormStringWithValue:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
    }
    else
    {
        NSMutableData *dataBody = [NSMutableData data];
        [dataBody appendData:[[NSString stringWithFormat:@"/r/n--%@/r/n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [dataBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"%@/"; filename=/"ipodfile.jpg/"/r/n",@"image"] dataUsingEncoding:NSUTF8StringEncoding]];
        [dataBody appendData:[@"Content-Type: application/octet-stream/r/n/r/n" dataUsingEncoding:NSUTF8StringEncoding]];

        [dataBody appendData:[dict valueForKey:[[dict allKeys]objectAtIndex:0]]];

        [body appendData:dataBody];
    }
}

[body appendData:[[NSString stringWithFormat:@"/r/n--%@--/r/n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPBody:body];

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError)
 {
     if (!data) {
         NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
          [dict setObject:[NSString stringWithFormat:@"%@",SomethingWentWrong] forKey:@"error"];
         block(dict);
         return ;
     }
     NSError *error = nil;
    // NSString *str=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
     NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
     NSLog(@"%@",dict);
     if (!dict) {
         NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
         [dict setObject:ServerResponceError forKey:@"error"];
         block(dict);
         return ;
     }
     block(dict);

 }];

}
+(NSMutableData*) contentDataFormStringWithValue:(NSString*)strValue 
withKey:(NSString *) key
{
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSMutableData *data=[[NSMutableData alloc]init];
[data appendData:[[NSString stringWithFormat:@"/r/n--%@/r/n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[data appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"%@/"/r/n/r/n",key] dataUsingEncoding:NSUTF8StringEncoding]];
[data appendData:[[NSString stringWithFormat:@"%@",strValue] dataUsingEncoding:NSUTF8StringEncoding]];  // title
return data;
}

+(NSMutableData*) contentDataFormImage:(UIImage*)image withKey:
(NSString *) key
{
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"/r/n--%@/r/n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=/"%@/"; filename=/"ipodfile.jpg/"/r/n",key] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream/r/n/r/n" dataUsingEncoding:NSUTF8StringEncoding]];
NSData *imageData=UIImageJPEGRepresentation(image, 0.40);
[body appendData:imageData];

return body;
}