Upload image to web service in ios - ios

Question

I tried AFNetworking's "Create an upload task" and this to upload image in .net server, but couldn't. This is what I tried.
- (void)uploadJPEGImage:(NSString*)requestURL image:(UIImage*)image
{
NSURL *url = [[NSURL alloc] initWithString:requestURL];
NSMutableURLRequest *urequest = [NSMutableURLRequest requestWithURL:url];
[urequest setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[urequest setHTTPShouldHandleCookies:NO];
[urequest setTimeoutInterval:60];
[urequest setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[urequest setValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
// add image data
NSData *imageData = UIImageJPEGRepresentation(qrCodeImage.image, 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", pictureName] 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", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[urequest setHTTPBody:body];
NSLog(#"Check response if image was uploaded after this log");
//return and test
NSData *returnData = [NSURLConnection sendSynchronousRequest:urequest returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"%#", returnString);
}
Since AFNetworking code gives, me this run time error despite adding
self.acceptableContentTypes = [[NSSet alloc] initWithObjects:#"application/xml", #"text/xml", #"text/html", nil];
Thanks.

Answer 1

Your code was missing the __VIEWSTATE content par. I've added in code to extract the URL of the uploaded image at the end:
- (void)uploadJPEGImage:(NSString*)requestURL image:(UIImage*)image
{
NSURL *url = [[NSURL alloc] initWithString:requestURL];
NSMutableURLRequest *urequest = [NSMutableURLRequest requestWithURL:url];
[urequest setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[urequest setHTTPShouldHandleCookies:NO];
[urequest setTimeoutInterval:60];
[urequest setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[urequest setValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
// Add __VIEWSTATE
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"__VIEWSTATE\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"/wEPDwUKLTQwMjY2MDA0M2RkXtxyHItfb0ALigfUBOEHb/mYssynfUoTDJNZt/K8pDs=" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
// add image data
NSData *imageData = UIImageJPEGRepresentation(image, 1.0);
if (imageData) {
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"FileUpload1\"; filename=\"image.jpg\"\r\n" 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", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[urequest setHTTPBody:body];
NSLog(#"Check response if image was uploaded after this log");
//return and test
NSHTTPURLResponse *response = nil;
NSData *returnData = [NSURLConnection sendSynchronousRequest:urequest returningResponse:&response error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"%#", returnString);
// Extract the imageurl
NSArray *parts = [returnString componentsSeparatedByString:#"\r\n"];
if (parts.count > 0) {
NSError *error = NULL;
NSDictionary *result = [NSJSONSerialization JSONObjectWithData:[parts[0] dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingAllowFragments error:&error];
NSLog(#"%#", result[#"imageurl"]); // Will either be nil or a URL string
}
}

Answer 2

1.I think you miss the hidden input in upload page:
2.Using the code below, i can upload successfully and get the right response string:
UIImage *image = [UIImage imageNamed:#"a.jpg"];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer new];
// add hidden parameter here
NSDictionary * parameters = #{#"__VIEWSTATE":#"/wEPDwUKLTQwMjY2MDA0M2RkXtxyHItfb0ALigfUBOEHb/mYssynfUoTDJNZt/K8pDs="};
[manager POST:#"http://cnapi.iconnectgroup.com/upload/fileuploadnew.aspx" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
// add image date here
[formData appendPartWithFileData:UIImageJPEGRepresentation(image, 0.5) name:#"FileUpload1" fileName:#"avatar.jpg" mimeType:#"image/jpeg"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSData * data = (NSData *)responseObject;
NSLog(#"Success,Response string: %#", [NSString stringWithCString:[data bytes] encoding:NSISOLatin1StringEncoding]);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];