将图片上传到 Cloudinary IOS
Upload image to Cloudinary IOS
我无法通过 HTTPS POST 请求将图片上传到 Cloudinary 主机，我想使用简单的 API 方法而不是 SDK。我在将图像格式化为字节数组缓冲区或 Base64 编码时遇到问题。
这是我的代码：
UIImage *image = [UIImage imageNamed:@"image.png"];
NSData *imageData = UIImagePNGRepresentation(image);
NSString *strImageData = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSURL *url = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/MYSECTER/image/upload"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
NSString *strRequest = [NSString stringWithFormat:@"file=%@&upload_preset=MYSECTER", strImageData];
request.HTTPBody = [strRequest dataUsingEncoding:NSUTF8StringEncoding];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
不幸的是，我从服务器收到以下答复："Unsupported source URL..."
我确实尝试了很多其他方法，但我无法使它起作用。
更新： 当我把 URL link 放在 'file' 参数时一切正常。
我对 Cloudinary 没有任何经验 API 但我希望这对您有所帮助。我查看了“Uploading with a direct call to the API”上的文档。
我认为您需要提供 'file' 和 'upload_preset' 作为 POST 参数（不作为正文中的数据连接）。
UIImage *image = [UIImage imageNamed:@"image.png"];
NSData *imageData = UIImagePNGRepresentation(image);
NSString *strImageData = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSURL *url = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/MYSECTER/image/upload"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
// Replace this:
//NSString *strRequest = [NSString stringWithFormat:@"file=%@&upload_preset=MYSECTER", strImageData];
//request.HTTPBody = [strRequest dataUsingEncoding:NSUTF8StringEncoding];
// With this:
NSString *imageDataStr = [[NSString alloc] initWithData:imageData encoding:NSUTF8StringEncoding];
[request setValue:imageDataStr forHTTPHeaderField:@"file"];
[request setValue:@"MYSECTER" forHTTPHeaderField:@"upload_preset"];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
我找到了解决方案，效果很好：
// image for sending
UIImage *image = [UIImage imageNamed:@"image.png"];
// 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:@"SECKET_PRESET" forKey:@"upload_preset"];
// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = @"----------V2ymHFg03ehbqgZCaKO6jy";
// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = @"file";
// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/SECKET_KEY/image/upload"];
// 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 = UIImagePNGRepresentation(image);
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];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
您可以使用 Cloudinary 的 SDK 来执行上传图片任务，如下所述：http://cloudinary.com/blog/direct_upload_made_easy_from_browser_or_mobile_app_to_the_cloud
The following code samples show a direct unsigned upload API call in Objective-C for iOS...:
CLCloudinary *cloudinary = [[CLCloudinary alloc] init];
[cloudinary.config setValue:@"demo" forKey:@"cloud_name"];
NSString *imageFilePath = [[NSBundle mainBundle] pathForResource:@"logo"
ofType:@"png"];
CLUploader* uploader = [[CLUploader alloc] init:cloudinary delegate:self];
[uploader unsignedUpload:imageFilePath uploadPreset:@"zcudy0uz" options:@{}];
The following code samples show a more advanced example: specifying a custom public ID of user_sample_image_1002, making it possible to later access the uploaded image, and assigning a tag to simplify management of the images. In addition, we show an example of building a dynamic URL that performs an on-the-fly image manipulation: generating a 150x100 face-detection-based thumbnail of the uploaded images for embedding in your application.
NSData *imageData = [NSData dataWithContentsOfFile:imageFilePath];
[uploader unsignedUpload:imageData uploadPreset:@"zcudy0uz" options:
[NSDictionary dictionaryWithObjectsAndKeys:@"user_sample_image_1002",
@"public_id", @"tags", @"ios_upload", nil] withCompletion:^(NSDictionary
*successResult, NSString *errorResult, NSInteger code, id context) {
if (successResult) {
NSString* publicId = [successResult valueForKey:@"public_id"];
NSLog(@"Upload success. Public ID=%@, Full result=%@", publicId,
successResult);
CLTransformation *transformation = [CLTransformation transformation];
[transformation setWidthWithInt: 150];
[transformation setHeightWithInt: 100];
[transformation setCrop: @"fill"];
[transformation setGravity:@"face"];
NSLog(@"Result: %@", [cloudinary url:publicId
options:@{@"transformation":
transformation, @"format": @"jpg"}]);
} else {
NSLog(@"Upload error: %@, %d", errorResult, code);
}
} andProgress:^(NSInteger bytesWritten, NSInteger totalBytesWritten,
NSInteger totalBytesExpectedToWrite, id context) {
NSLog(@"Upload progress: %d/%d (+%d)", totalBytesWritten,
totalBytesExpectedToWrite, bytesWritten);
}];
我无法通过 HTTPS POST 请求将图片上传到 Cloudinary 主机，我想使用简单的 API 方法而不是 SDK。我在将图像格式化为字节数组缓冲区或 Base64 编码时遇到问题。
这是我的代码：
UIImage *image = [UIImage imageNamed:@"image.png"];
NSData *imageData = UIImagePNGRepresentation(image);
NSString *strImageData = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSURL *url = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/MYSECTER/image/upload"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
NSString *strRequest = [NSString stringWithFormat:@"file=%@&upload_preset=MYSECTER", strImageData];
request.HTTPBody = [strRequest dataUsingEncoding:NSUTF8StringEncoding];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
不幸的是，我从服务器收到以下答复："Unsupported source URL..."
我确实尝试了很多其他方法，但我无法使它起作用。
更新： 当我把 URL link 放在 'file' 参数时一切正常。
我对 Cloudinary 没有任何经验 API 但我希望这对您有所帮助。我查看了“Uploading with a direct call to the API”上的文档。
我认为您需要提供 'file' 和 'upload_preset' 作为 POST 参数（不作为正文中的数据连接）。
UIImage *image = [UIImage imageNamed:@"image.png"];
NSData *imageData = UIImagePNGRepresentation(image);
NSString *strImageData = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSURL *url = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/MYSECTER/image/upload"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
// Replace this:
//NSString *strRequest = [NSString stringWithFormat:@"file=%@&upload_preset=MYSECTER", strImageData];
//request.HTTPBody = [strRequest dataUsingEncoding:NSUTF8StringEncoding];
// With this:
NSString *imageDataStr = [[NSString alloc] initWithData:imageData encoding:NSUTF8StringEncoding];
[request setValue:imageDataStr forHTTPHeaderField:@"file"];
[request setValue:@"MYSECTER" forHTTPHeaderField:@"upload_preset"];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
我找到了解决方案，效果很好：
// image for sending
UIImage *image = [UIImage imageNamed:@"image.png"];
// 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:@"SECKET_PRESET" forKey:@"upload_preset"];
// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = @"----------V2ymHFg03ehbqgZCaKO6jy";
// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = @"file";
// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@"https://api.cloudinary.com/v1_1/SECKET_KEY/image/upload"];
// 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 = UIImagePNGRepresentation(image);
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];
[[[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSDictionary *recievedData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"RECEIVED: %@", recievedData);
}] resume];
您可以使用 Cloudinary 的 SDK 来执行上传图片任务，如下所述：http://cloudinary.com/blog/direct_upload_made_easy_from_browser_or_mobile_app_to_the_cloud
The following code samples show a direct unsigned upload API call in Objective-C for iOS...:
CLCloudinary *cloudinary = [[CLCloudinary alloc] init];
[cloudinary.config setValue:@"demo" forKey:@"cloud_name"];
NSString *imageFilePath = [[NSBundle mainBundle] pathForResource:@"logo"
ofType:@"png"];
CLUploader* uploader = [[CLUploader alloc] init:cloudinary delegate:self];
[uploader unsignedUpload:imageFilePath uploadPreset:@"zcudy0uz" options:@{}];
The following code samples show a more advanced example: specifying a custom public ID of user_sample_image_1002, making it possible to later access the uploaded image, and assigning a tag to simplify management of the images. In addition, we show an example of building a dynamic URL that performs an on-the-fly image manipulation: generating a 150x100 face-detection-based thumbnail of the uploaded images for embedding in your application.
NSData *imageData = [NSData dataWithContentsOfFile:imageFilePath];
[uploader unsignedUpload:imageData uploadPreset:@"zcudy0uz" options:
[NSDictionary dictionaryWithObjectsAndKeys:@"user_sample_image_1002",
@"public_id", @"tags", @"ios_upload", nil] withCompletion:^(NSDictionary
*successResult, NSString *errorResult, NSInteger code, id context) {
if (successResult) {
NSString* publicId = [successResult valueForKey:@"public_id"];
NSLog(@"Upload success. Public ID=%@, Full result=%@", publicId,
successResult);
CLTransformation *transformation = [CLTransformation transformation];
[transformation setWidthWithInt: 150];
[transformation setHeightWithInt: 100];
[transformation setCrop: @"fill"];
[transformation setGravity:@"face"];
NSLog(@"Result: %@", [cloudinary url:publicId
options:@{@"transformation":
transformation, @"format": @"jpg"}]);
} else {
NSLog(@"Upload error: %@, %d", errorResult, code);
}
} andProgress:^(NSInteger bytesWritten, NSInteger totalBytesWritten,
NSInteger totalBytesExpectedToWrite, id context) {
NSLog(@"Upload progress: %d/%d (+%d)", totalBytesWritten,
totalBytesExpectedToWrite, bytesWritten);
}];