objective-c HTTP POST send request as form - ios

Question

I have used POST method to call API with header values and params for body on my application.
The server only accepts forms in the format
"form": {
"action" : "login",
"user" : "311"
},
When we use code
NSString *urlString = [NSString stringWithFormat:#"%#", url_string];
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSError *error;
NSDictionary *parameters = #{#"action": #"login", #"user": #"311"};
NSString *params = [self makeParamtersString:parameters withEncoding:NSUTF8StringEncoding];
NSData *jsonData2 = [params dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody: jsonData2];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];
My form looks like this
form = {
action = login;
user = 311;
};
Can you produce the result you want?
Could you please help me to solve this issue.

Answer 1

Try
NSString *urlString = [NSString stringWithFormat:#"%#", url_string];
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSError *error;
NSDictionary *parameters = #{#"action": #"login", #"user": #"311"};
NSData *jsonData = [NSJSONSerialization dataWithJSONObject: parameters options:0 error:&error];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody: jsonData];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];

Answer 2

How about change the parameters like this.
NSDictionary *parameters = #{#"form":#{#"action": #"login", #"user": #"311"}};
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:nil];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request addValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody: jsonData];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];

Answer 3

Try This if you need base64 encoding
NSMutableDictionary *param = [#{#"form":#{#"action": #"login", #"user": #"311"}} mutableCopy];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:serviceURL];
NSString *strEncoded = [self encodeParameters:param];
NSData *requestData = [strEncoded dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:requestData];
[request setValue:[NSString stringWithFormat:#"%lu",(unsigned long)requestData.length] forHTTPHeaderField:#"Content-Length"];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
// Function encodeParameters
+(NSString *)encodeParameters:(NSDictionary *)dictEncode
{
// Encode character set as per BASE64
NSCharacterSet *URLBase64CharacterSet = [[NSCharacterSet characterSetWithCharactersInString:#"/+=\n"] invertedSet];
NSMutableString *stringEncode = [[NSMutableString alloc] init];
NSArray *allKeys = [dictEncode allKeys];
for (int i = 0;i < allKeys.count; i++) {
NSString *key = [allKeys objectAtIndex:i];
if([dictEncode valueForKey:key])
{
[stringEncode appendFormat:#"%#=%#",key,[[dictEncode valueForKey:key] stringByAddingPercentEncodingWithAllowedCharacters:URLBase64CharacterSet]];
}
if([allKeys count] > i+1)
{
[stringEncode appendString:#"&"];
}
}
return stringEncode;
}

Answer 4

Try this
NSURL * url = [NSURL URLWithString:#"%#",url_string];
NSURLSessionConfiguration * config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession * session = [NSURLSession sessionWithConfiguration:config];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
request.HTTPMethod = #"POST";
NSDictionary * paramters = [NSDictionary dictionaryWithObjectsAndKeys:#"login",#"action",#"311",#"user", nil]; // [NSDictionary dictionaryWithObjectsAndKeys:#"value",#"key", nil];
NSDictionary *params = #{#"form": paramters};
NSError *err = nil;
NSData *jsonData2 = [NSJSONSerialization dataWithJSONObject:params options:0 error:&err];

Answer 5

Try this,
NSString *parameters = #"\"form\":{\"action\" : \"login\", \"user\" : \"311\"}";
NSData *jsonData2 = [parameters dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody: jsonData2];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];

Answer 6

NSError *error;
NSDictionary *parameters = #{#"form": #{#"action": #"login", #"user": #"311"}};
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters
options:NSJSONWritingPrettyPrinted error:&error];
request.HTTPBody = jsonData
//Using NSURLSession is better option than using NSURLConnection
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
NSHTTPURLResponse* respHttp = (NSHTTPURLResponse*) response;
if (!error && respHttp.statusCode == 200) {
NSDictionary* respondData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(#"%#", respondData);
} else{
NSLog(#"%#", error);
}
}];
[dataTask resume];

Answer 7

Try AFNetwoking
NSString *urlString = [NSString stringWithFormat:#"URL"];
NSDictionary *para= #{#"action": #"login", #"user": #"311"};
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"text/html"];
[manager POST:urlString parameters:para success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"JSON: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];