Tải lên nhiều hình ảnh trong một yêu cầu

Question

Tôi muốn tải lên nhiều hình ảnh trong yêu cầu dịch vụ đơn lẻ. Làm thế nào tôi có thể làm điều đó. Tính đến bây giờ tôi có thể tải lên hình ảnh duy nhất như là

NSData *imageData = UIImageJPEGRepresentation(image, 90); 


NSString *boundary = @"---------------------------14737809831466499882746641449"; 


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

NSMutableData *postBody = [NSMutableData data]; 

// file 
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[[NSString stringWithString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"files\"; filename=\”%@\”\r\n”,@“imagename”]] dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
[postBody appendData:[NSData dataWithData:imageData]]; 
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 


[postBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 

Bây giờ tôi muốn tải lên hai hình ảnh đến máy chủ làm thế nào tôi có thể làm điều đó.

Answer 1

câu trả lời của bạn là ở đây. Nó đã được thử nghiệm và tôi đang sử dụng phương pháp dưới đây để tải lên nhiều hình ảnh cùng với các thông số khác.

- (void)uploadMultipleImageInSingleRequest 
{ 

    NSString *returnString; 
    NSDictionary *aParametersDic; // It's contains other parameters. 
    NSDictionary *aImageDic; // It's contains multiple image data as value and a image name as key 
    NSString *urlString; // an url where the request to be posted 
    NSURL *url = [NSURL URLWithString:urlString]; 
    NSMutableURLRequest *request= [[NSMutableURLRequest alloc] initWithURL:url] ; 

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

    NSMutableData *postbody = [NSMutableData data]; 
    NSString *postData = [self getHTTPBodyParamsFromDictionary:aParametersDic boundary:boundary]; 
    [postbody appendData:[postData dataUsingEncoding:NSUTF8StringEncoding]]; 

    [aImageDic enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) { 
     if(obj != nil) 
     { 
      [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
      [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"PostedImage\"; filetype=\"image/png\"; filename=\"%@\"\r\n", key] dataUsingEncoding:NSUTF8StringEncoding]]; 
      [postbody appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
      [postbody appendData:[NSData dataWithData:obj]]; 
     } 
    }]; 

    [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [request setHTTPBody:postbody]; 

    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
    returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 
} 

.

-(NSString *) getHTTPBodyParamsFromDictionary: (NSDictionary *)params boundary:(NSString *)boundary 
{ 
    NSMutableString *tempVal = [[NSMutableString alloc] init]; 
    for(NSString * key in params) 
    { 
     [tempVal appendFormat:@"\r\n--%@\r\n", boundary]; 
     [tempVal appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n%@",key,[params objectForKey:key]]; 
    } 
    return [tempVal description]; 
} 

Answer 2

Một lựa chọn sử dụng AFNetworking tải nhiều hình ảnh

//create image data 
UIImage *image = ...... 
NSData *imageData = UIImageJPEGRepresentation(image, 0.5); 

UIImage *image2 = ...... 
NSData *imageData2 = UIImageJPEGRepresentation(image2, 0.5); 

//Now add to array and also create array of images data 
NSArray *arrImagesData = [NSArray arrayWithObjects:imageData,imageData2,nil]; 

//Create manager 
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; 
//parameters if any 
NSDictionary *parameters = ....... 
//Now post 
[manager POST:@"your url here" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { 
    //add img data one by one 
    for(int i=0; i<[arrImagesData count];i++) 
    { 
     NSData *imageData = arrImagesData[i]; 
     NSString *strName = [NSString stringWithFormat:@"name%d",i] 
     [formData appendPartWithFormData:imageData name:strName]; 
    } 


} success:^(AFHTTPRequestOperation *operation, id responseObject) { 
    NSLog(@"Success: %@", responseObject); 

} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
    NSLog(@"Error: %@", error); 
}]; 

Answer 3

#define kStartTag @"--%@\r\n" 
#define kEndTag  @"\r\n" 
#define kContent @"Content-Disposition: form-data; name=\"%@\"\r\n\r\n" 
#define kBoundary @"---------------------------14737809831466499882746641449" 

-(void)uploadImageonServers 
    { 
     NSMutableURLRequest *request = nil; 
     NSLog(@"image upload"); 

     NSMutableData *body = [NSMutableData data]; 
     request = [[NSMutableURLRequest alloc] init]; 
     NSString *requestURL = [NSString stringWithFormat:@"http://192.168.1.101/gmento/index.php/api/professional/addServices"]; 

     [request setURL:[NSURL URLWithString:requestURL]]; 
     [request setHTTPMethod:@"POST"]; 
     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",kBoundary]; 
     [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 


     // user ID parameter 
     [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kContent, @"professional_id"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[@"1232" dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 


     // Grop ID parameter 
     [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kContent, @"title"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[@"test" dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 


     // prepration_type_id parameter 
     [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kContent, @"price"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[@"test" dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 

     // description parameter 
     [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:kContent, @"description"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[@"test" dataUsingEncoding:NSUTF8StringEncoding]]; 

     [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 




     NSMutableArray *arr_images=[[NSMutableArray alloc] init]; 
     [arr_images addObject:[UIImage imageNamed:@"1.jpg"]]; 
     [arr_images addObject:[UIImage imageNamed:@"1.jpg"]]; 
     for (int i=0; i<arr_images.count;i++) 
     { 
      NSData *image_videoData;//isImageSet?imgMyProfPict.image:@"" 
      image_videoData = UIImageJPEGRepresentation([arr_images objectAtIndex:i], 1.0); 
      if (image_videoData) 
      { 
       // image File 
       [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=%@; filename=imageName.jpeg\r\n", @"services_image[]"] dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:image_videoData]; 
       [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 
      } 
      else 
      { 
       [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
      } 

     } 


     for (int i=0; i<arr_images.count;i++) 
     { 
      NSData *image_videoData;//isImageSet?imgMyProfPict.image:@"" 
      image_videoData = UIImageJPEGRepresentation([arr_images objectAtIndex:i], 1.0); 
      if (image_videoData) 
      { 
       // image File 
       [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=%@; filename=imageName.jpeg\r\n", @"glimpses_image[]"] dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
       [body appendData:image_videoData]; 
       [body appendData:[[NSString stringWithFormat:kEndTag] dataUsingEncoding:NSUTF8StringEncoding]]; 
      } 
      else 
      { 
       [body appendData:[[NSString stringWithFormat:kStartTag, kBoundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
      } 

     } 


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


     NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[body length]]; 
     [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
     [request setHTTPBody:body]; 

     NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
     NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

     NSError *error; 
     id receivedData = [NSJSONSerialization JSONObjectWithData:returnData options:NSJSONReadingMutableContainers error:&error]; 

     NSDictionary *dicResponse = (NSDictionary *)receivedData; 
     if ([[dicResponse valueForKeyPath:@"status"] intValue] == 1) 
     { 
     } 
     else 
     { 
     } 

    } 

Answer 4

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
[request setHTTPShouldHandleCookies:NO]; 
[request setTimeoutInterval:60]; 
[request setHTTPMethod:@"POST"]; 
NSString *boundary = @"------VohpleBoundary4QuqLuM1cE5lMwCy"; 
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; 
[request setValue:contentType forHTTPHeaderField: @"Content-Type"]; 

NSMutableData *body = [NSMutableData data]; 
NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init]; 
[parameters setValue:@"IOS Testing" forKey:@"subject"]; 
[parameters setValue:@"Message" forKey:@"message"]; 
    for (NSString *param in parameters) { 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"%@\r\n", [parameters objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]]; 
} 


NSMutableArray *multipleArray=[[NSMutableArray alloc] init]; 
[multipleArray addObject:[UIImage imageNamed:@"images.jpeg"]]; 
[multipleArray addObject:[UIImage imageNamed:@"pic3.png"]]; 
for (int i=0; i<multipleArray.count;i++) 
{ 
    NSData *imageData; 
    imageData = UIImageJPEGRepresentation([multipleArray objectAtIndex:i], 1.0); 
    if (imageData) 
    { 
     [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", @"uploaded_file[]"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[@"Content-Type:image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
     [body appendData:[NSData dataWithData:imageData]]; 
     [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    } 
    else 
    { 
     [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    } 

} 

[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
[request setHTTPBody:body]; 
[request setURL:[NSURL URLWithString:BASEURL]]; 
[NSURLConnection sendAsynchronousRequest:request 
            queue:[NSOperationQueue mainQueue] 
         completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { 
          NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response; 
          if ([httpResponse statusCode] == 200) { 
           NSLog(@"success"); 
          } 

}]; 

}