objective c - saber - Solicitud de publicación HTTP en Objective-C no funciona

monarquias actuales 2018

Question

Estoy escribiendo una solicitud HTTP Post, pero por alguna razón los parámetros no se están agregando correctamente, y no puedo por la vida de entender qué estoy haciendo mal. Esto es lo que tengo:

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

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

// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:@"text; boundary=%@", boundary];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];

// post body
NSMutableData *body = [NSMutableData data];

// Dictionary that holds post parameters. 
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:subject forKey:@"subject"];
[_params setObject:message forKey:@"message"];
[_params setObject:[[UIDevice currentDevice] systemName] forKey:@"device"];

// add params 
for (NSString *param in _params) {
    [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", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}

// the server url
NSURL* requestURL = [NSURL URLWithString:CIVCManifest.contactFeed];

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

// setting the body of the post to the reqeust
[request setHTTPBody:body];

// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];

// set URL
[request setURL:requestURL];

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

La solicitud se está completando, sin embargo, todos los parámetros no se están agregando correctamente. Tenía un script de Post trabajando que subiría una foto, y copié y pegué la mayor parte de ella en esta, pero de alguna manera esta no funciona. Espero que sea solo un error simple que me estoy perdiendo.

Answer 1

Prueba esto

 NSString *Post = [[NSString alloc] initWithFormat:@"Post Parameters"];
    NSURL *Url = [NSURL URLWithString:@"Url"];

    NSData *PostData = [Post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

    NSString *postLength = [NSString stringWithFormat:@"%d", [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];