Как загрузить изображения на сервер?

Question

  NSMutableDictionary *files = [[NSMutableDictionary alloc] init]; 
      UIImage *imageFromImageView = userpic.image; 

      NSData *data1 = UIImageJPEGRepresentation(imageFromImageView, 0.8); 
      if ([data1 length]>0) { 
       [files setValue:data1 forKey:@"photo"]; 
      } 


    NSString *urlString =@"http://chkdin.com/dev/api/user/update_user?"; 
    NSURL *url = [NSURL URLWithString:urlString]; 

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

    NSString *parameterString=[NSString stringWithFormat:@"skey=%@&user_id=%@&first_name=%@&last_name=%@&designation=%@&company=%@&display_name=%@&photo=%@",@"sa6rw9er7twefc9a7dvcxcheckedin",[[NSUserDefaults standardUserDefaults]objectForKey:@"UserId"],FirstNameString,LastNameString,DesignationString,OrganizationString,displayname,files]; 

    NSLog(@"%@",parameterString); 

    [request setHTTPMethod:@"POST"]; 
    [request setURL:url]; 
    [request setValue:parameterString forHTTPHeaderField:@"Content-Length"]; 
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; 

    NSData *postData = [parameterString dataUsingEncoding:NSUTF8StringEncoding]; 
    [request setHTTPBody:postData]; 

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; 
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration]; 
    NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) { 
     if (error) { 
      [activityIndicatorView stopAnimating]; 
     } else { 
      NSLog(@"%@ %@", response, responseObject); 
    } 
     }]; 
    [dataTask resume]; 

Это я попробовал код, здесь выбранное пользователем изображение Я загружаю на сервер, но изображение не загружается. Здесь пользователь выбрал изображение, которое я преобразовал в файл formate, затем отправлю на сервер. Не могли бы вы помочь мне в чем проблема моего кода.

Answer 1

Вы должны использовать multipart/form-data для загрузки файлов на сервер. Попробуйте это:

NSMutableDictionary *params=[NSMutableDictionary dictionary]; 
[params setObject:@"sa6rw9er7twefc9a7dvcxcheckedin" forKey:@"skey"]; 
[params setObject:[[NSUserDefaults standardUserDefaults]objectForKey:@"UserId"] forKey:@"user_id"]; 
[params setObject:FirstNameString forKey:@"first_name"]; 
[params setObject:LastNameString forKey:@"last_name"]; 
[params setObject:DesignationString forKey:@"designation"]; 
[params setObject:OrganisationString forKey:@"company"]; 
[params setObject:displayname forKey:@"display_name"]; 

NSError *error = nil; 

NSData *jsonData=[NSJSONSerialization dataWithJSONObject:params options:0 error:&error]; 
NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[jsonData length]]; 

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://chkdin.com/dev/api/user/update_user"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:180]; 

[request setHTTPMethod:@"POST"]; 
[request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 

//Post value as form data 

NSMutableData *body = [NSMutableData data]; 

NSString *boundary = @"---------------------------14737800031466499882746641949"; 
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; charset=utf-8; boundary=%@", boundary]; 

[request addValue:contentType forHTTPHeaderField:@"Content-Type"]; 

[params enumerateKeysAndObjectsUsingBlock:^(NSString *parameterKey, NSString *parameterValue, BOOL *stop) { 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", parameterKey] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"%@\r\n", parameterValue] dataUsingEncoding:NSUTF8StringEncoding]]; 
}]; 

//Image upload part 
UIImage *imageFromImageView = userpic.image; 

NSData *dataImage = UIImageJPEGRepresentation(imageFromImageView, 0.8); 

[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: attachment; name=\"photo\"; filename=\"%@\"\r\n",@"photoname"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[@"Content-Type: image/jpg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:dataImage]; 
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 

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

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; 
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration]; 

NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) { 
     if (error) { 
      [activityIndicatorView stopAnimating]; 

     } else { 
      NSLog(@"%@ %@", response, responseObject); 
     } 
}]; 
[dataTask resume]; 

Answer 2

Попробуйте это:

NSMutableDictionary *files = [[NSMutableDictionary alloc] init]; 
      UIImage *imageFromImageView = userpic.image; 

      NSData *data1 = UIImageJPEGRepresentation(imageFromImageView, 0.8); 
      if ([data1 length]>0) { 
       [files setValue:data1 forKey:@"photo"]; 
      } 


     NSString *Datestr = [self dateStringJPG]; 
     NSString *str=@"http://chkdin.com/dev/api/user/update_user?"; 

     NSString *parameterString=[NSString stringWithFormat:@"skey=%@&user_id=%@&first_name=%@&last_name=%@&designation=%@&company=%@&display_name=%@&photo=%@",@"sa6rw9er7twefc9a7dvcxcheckedin",[[NSUserDefaults standardUserDefaults]objectForKey:@"UserId"],FirstNameString,LastNameString,DesignationString,OrganizationString,displayname,files]; 

     NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
     NSString *BoundaryConstant = @"----------V2ymHFg03ehbqgZCaKO6jy"; 
     NSString* FileParamConstant = @"file"; 
     NSURL* requestURL = [NSURL URLWithString:str]; 
     request = [[NSMutableURLRequest alloc] init]; 
     [request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData]; 
     [request setHTTPShouldHandleCookies:NO]; 
     [request setTimeoutInterval:60]; 
     [request setHTTPMethod:@"PUT"]; 
     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", BoundaryConstant]; 
     [request setValue:contentType forHTTPHeaderField: @"Content-Type"]; 
     NSMutableData *body = [NSMutableData data]; 

     NSData *imageData = UIImageJPEGRepresentation(image, 0.5); 
     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:[@"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]]; 
    NSData *postData = [parameterString dataUsingEncoding:NSUTF8StringEncoding]; 
    [request setHTTPBody:postData];   
     NSString *postLength = [NSString stringWithFormat:@"%d", [body length]]; 
     [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
     [request setURL:requestURL]; 
     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { 
      if(data.length > 0) 
      { 
       NSLog(@"success jpg %@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]); 
      } 
      else 
      { 
       NSLog(@"---xxerror %@-%@",data,error); 
      } 
     }]; 

Answer 3

-(void)sendDataToServer 
{ 
indicators.hidden=NO; 
[indicators startAnimating]; 
NSUserDefaults*defaults=[NSUserDefaults standardUserDefaults]; 

dict = [defaults objectForKey:@"Ucountry"]; 

NSMutableDictionary* _params = [[NSMutableDictionary alloc] init]; 
    [_params setObject:[dict objectForKey:@"id"] forKey:@"userId"]; 

[_params setObject:@"" forKey:@"address"]; 
[_params setObject:txtCity.text forKey:@"city"]; 
[_params setObject:@"" forKey:@"country"]; 
[_params setObject:txtemail.text forKey:@"emailId"]; 
[_params setObject:txtFullName.text forKey:@"firstName"]; 
[_params setObject:txtPhoneNumber.text forKey:@"mobile"]; 
[_params setObject:txtState.text forKey:@"state"]; 
[_params setObject:txtZipCode.text forKey:@"zipcode"]; 


DLog(@"data=====>%@",_params); 
[_params setObject:@"editprofile" forKey:@"action"]; 


NSString *BoundaryConstant = @"----------V2ymHFg03ehbqgZCaKO6jy"; 
NSString* FileParamConstant = @"image"; 

NSURL* requestURL = [NSURL URLWithString:BaseURL]; 


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

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 
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:[@"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:@"%lu", (unsigned long)[body length]]; 
[request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
// set URL 
[request setURL:requestURL]; 

NSURLResponse *response = nil; 
NSError *requestError = nil; 

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&requestError]; 


if (requestError == nil) 
{ 

    NSDictionary* json = [NSJSONSerialization JSONObjectWithData:returnData options:kNilOptions error:&requestError]; 

    dict=json; 
    DLog(@"data=====>%@",dict); 

    if ([[dict objectForKey:@"status"] isEqualToString:@"Success"]==TRUE) 
    { 
     [hud hideAnimated:YES]; 


     NSUserDefaults *defUser = [NSUserDefaults standardUserDefaults]; 
     [defUser setObject:[dict objectForKey:@"response"]forKey:@"Ucountry"]; 
     [defUser synchronize]; 

     UIStoryboard*storyboard=[AppDelegate storyBoardType]; 
     DashboardVC*dsvc=(DashboardVC*)[storyboard instantiateViewControllerWithIdentifier:@"DashboardVCId"]; 
     [self.navigationController pushViewController:dsvc animated:YES]; 
       }else{ 
        [hud hideAnimated:YES]; 

    } 
} 
} 
-(void)Open_Camera{ 

#if TARGET_IPHONE_SIMULATOR 

NSLog(@"No Camera is set up in Simulator"); 

#else 

UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
picker.delegate = self; 
picker.allowsEditing = YES; 
picker.sourceType = UIImagePickerControllerSourceTypeCamera; 
[self presentViewController:picker animated:YES completion:NULL]; 

#endif 

} 

-(void)Open_Library{ 

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; 

imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
imagePicker.delegate=self; 
imagePicker.navigationBar.tintColor=[UIColor whiteColor]; 
imagePicker.allowsEditing = YES; 

if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) 
{ 
    [self presentViewController:imagePicker animated:YES completion:nil]; 
} 
else{ 
    [self presentViewController:imagePicker animated:YES completion:nil]; 
} 
} 

-(void)selectphoto{ 
UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
picker.delegate = self; 
picker.allowsEditing = YES; 
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
[self presentViewController:picker animated:YES completion:NULL]; 
} 
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 


    UIImage *img = [info objectForKey:UIImagePickerControllerOriginalImage]; 
imgView.image =img; 
NSLog(@"image user png is -----<%@",imgView.image); 

if(imgView==nil) 
{ 
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"OOPS" message:@"No Image Foundy " 
                     preferredStyle:UIAlertControllerStyleAlert]; 

    UIAlertAction *actionOk = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:nil]; 
    [alertController addAction:actionOk]; 
    [self presentViewController:alertController animated:YES completion:nil]; 

} 
else 
{ 
    imageData=[self compressImage:img]; 

    [picker dismissViewControllerAnimated:YES completion:nil]; 

} 
return; 

} 

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { 

[picker dismissViewControllerAnimated:YES completion:NULL]; 

} 

-(NSData *)compressImage:(UIImage *)image1 { 

float actualHeight = image1.size.height; 
float actualWidth = image1.size.width; 
float maxHeight = 500.0; 
float maxWidth = 500.0; 
float imgRatio = actualWidth/actualHeight; 
float maxRatio = maxWidth/maxHeight; 
float compressionQuality = 0.5; 

if(imgRatio < maxRatio){ 

    imgRatio = maxHeight/actualHeight; 
    actualWidth = maxWidth; 
    actualHeight = maxHeight; 
} 
else if(imgRatio > maxRatio){ 

    imgRatio = maxWidth/actualWidth; 
    actualHeight = maxHeight; 
    actualWidth = maxWidth; 
} 
else{ 
    actualHeight = maxHeight; 
    actualWidth = maxWidth; 
} 
CGRect rect = CGRectMake(0.0, 0.0, actualWidth, actualHeight); 
UIGraphicsBeginImageContext(rect.size); 
[image1 drawInRect:rect]; 
UIImage *img = UIGraphicsGetImageFromCurrentImageContext(); 
imageData = UIImageJPEGRepresentation(img, compressionQuality); 
UIGraphicsEndImageContext(); 

return imageData; 
} 
-(IBAction)actionSheetForCameraAndGalleryClick:(id)sender{ 
    UIAlertController*alertAction=[UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet]; 

    UIAlertAction *action=[UIAlertAction actionWithTitle:@"Camera" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){ 

     [self Open_Camera]; 
    }]; 


    UIAlertAction *action1=[UIAlertAction actionWithTitle:@"Gallery" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){ 

     [self Open_Library]; 
    }]; 


    UIAlertAction *cancelAlert=[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){ 


     [self dismissViewControllerAnimated:YES completion:nil]; 
    }]; 


    [alertAction addAction:action]; 
    [alertAction addAction:action1]; 
    [alertAction addAction:cancelAlert]; 

    [self presentViewController:alertAction animated:YES completion:nil]; 
} 
- (IBAction)CameraOpena:(id)sender { 

[self Open_Camera]; 
} 

- (IBAction)GalleryOpen:(id)sender { 

[self Open_Library]; 
} 

Answer 4

Напишите метод API запроса, как это, используя Afnetworking ...

-(void)apiRequestImageUploadWithCompleteBlock:(NSString *)methodName methodParameters:(NSDictionary *)methodParameters imageName:(NSString *)imageName uploadImageData:(NSData *)uploadImageData inputParameters:(NSDictionary *)inputParameters completeBlock:(RTDictionaryResponseBlock)completeBlock failBlock:(RTFailBlock)failBlock 
{ 
    AFHTTPSessionManager *session = [AFHTTPSessionManager manager]; 
    //AFHTTPSessionManager *session = [[AFHTTPSessionManager alloc]initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]]; 
    session.requestSerializer = [AFJSONRequestSerializer serializer]; 
    [session.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 

    //-------------------------------------------------------------------------------------- 
NSString *URL_String = [NSString stringWithFormat:@"%@",baseUrl]; 

     NSDictionary *params = @{ 
           @"securitykey”:@“”, 
           @"fc":@"", 
           @"module":@"" 
           }; 

     NSMutableDictionary *dict_parameters=[params mutableCopy]; 
     [dict_parameters addEntriesFromDictionary:inputParameters]; 

     //Add method parameters 
     [dict_parameters addEntriesFromDictionary:methodParameters]; 



     [session POST:URL_String parameters:dict_parameters constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) { 

      [formData appendPartWithFileData:uploadImageData name:@"image" fileName:imageName mimeType:@"image/png"]; 

     } progress:^(NSProgress * _Nonnull uploadProgress) { 

     } success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { 

      NSDictionary *dataObj = (NSDictionary *)responseObject; 

      completeBlock(dataObj); 

     } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { 

      NSLog(@"%s :%@",__PRETTY_FUNCTION__,error.description); 

      failBlock(); 
     }]; 
    }