Upload image to .net server using POST method - ios

Question

I am trying to upload a UIImage to .Net server by converting the image into base 64 and NSData. But I am getting the response null. Here is my code.
NSString *base64Encoded = [imageData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed];
NSString *post= [NSString stringWithFormat:#"myServerSideUrl?Image=%#",base64Encoded];
NSLog(#"PostData: %#",post);
NSString* webStringURL = [post stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]];
NSURL* url = [NSURL URLWithString:webStringURL];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSError *error;
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSData *responseData = [[NSData alloc]initWithData:urlData];
if ([response statusCode] >=200 )
{
NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData: responseData options:0 error:nil];
NSLog(#"%#",jsonData);
}
After some time, I just checked in postman showing like url too long HttpResponseCode:414. Also I tried to send the image in NSData format using AFNetwork, getting the same response. And I just googled about this, saying like send the base 64 string in body. When I tried to send image in body, server side can't get the image. They are creating the API like GET method but the actual method is POST. Is there any other solution about this. Any suggestions.

Answer 1

You are setting NSData to your request body without defining any key-value pair.
Try this code using AFNetworking...
- (void) uploadFileRequestWithHttpHeaders:(NSMutableDictionary*) headers
withServiceName:(NSString*) serviceName
withParameters:(NSMutableDictionary*) params
withFileData:(NSArray*) files
{
NSString *serviceUrl = [httpBaseURL stringByAppendingPathComponent:serviceName];
if (headers == nil)
{
NSDictionary *headers = [[NSDictionary alloc] initWithObjectsAndKeys:#"multipart/form-data",#"Content-Type",nil];
[self setHeaders:headers];
}
else
{
[headers setObject:#"multipart/form-data" forKey:#"Content-Type"];
[self setHeaders:headers];
}
[httpSessionManager POST:serviceUrl
parameters:params
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
for (NSData *fileData in files)
{
[formData appendPartWithFileData:fileData name:#"userProfileImg" fileName:#"profile_pic.jpg" mimeType:#"image/jpeg"];
}
}
success:^(NSURLSessionDataTask *task, id responseObject) {
if (success != nil)
}
failure:^(NSURLSessionDataTask *task, NSError *error) {
if (failure != nil)
}];
}
- (void) setHeaders:(NSDictionary*) headers
{
if (headers != nil)
{
NSArray *allHeaders = [headers allKeys];
for (NSString *key in allHeaders)
{
[httpSessionManager.requestSerializer setValue:[headers objectForKey:key] forHTTPHeaderField:key];
}
}
}
- (void) addQueryStringWithParams:(NSDictionary*) params
{
[httpSessionManager.requestSerializer setQueryStringSerializationWithBlock:^NSString *(NSURLRequest *request, NSDictionary *parameters, NSError *__autoreleasing *error) {
__block NSMutableString *query = [NSMutableString stringWithString:#""];
NSError *err;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:params options:0 error:&err];
NSMutableString *jsonString = [[NSMutableString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
query = jsonString;
return query;
}];
}
And call this method like this..
NSArray *objects = [NSArray arrayWithObjects:#"multipart/form-data",#"1.0",#"ios",token, nil];
NSArray *Keys = [NSArray arrayWithObjects:#"content-type",#"version",#"os",#"token", nil];
NSMutableDictionary *headers = [[NSMutableDictionary alloc]initWithObjects:objects forKeys:Keys];
NSMutableDictionary *paraDic = [[NSMutableDictionary alloc] init];
[paraDic setObject:self.userNameField.text forKey:#"name"];
NSData * userProfileImg = UIImageJPEGRepresentation(image, 0.8f);
imageDataArray = [NSArray arrayWithObjects:userProfileImg, nil];
[self uploadFileRequestWithHttpHeaders:headers withServiceName:#"updateProfile" withParameters:params withFileData:files];

Answer 2

You can try this code using NSURLSession-
- (void)postRequestForSubmitDataToServer {
//Put your action URL
NSURL *aUrl = [NSURL URLWithString:#"action_url.php?&attachment=att&submit=submit"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:aUrl
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request setHTTPMethod:#"POST"];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if(error == nil) {
//change JSON type according to ur need.
NSArray *JSON = [NSJSONSerialization JSONObjectWithData:data options: NSJSONReadingMutableContainers error: &error];
NSLog(#"Data = %#",JSON);
} else {
NSLog(#"%#", error);
}
}];
[postDataTask resume];
}
My form data-
<form action="action_url.php" method="post" enctype="multipart/form-data">
Your Photo: <input type="file" name="attachment" size="25" /><br>
<input type="submit" name="submit" value="Submit" /> </form>