Post request with raw body using NSURLSession

问题:

I have stuck here. Below is my code for Post request with raw body using NSURLSession. I got response = NULL and no error.

NSString* stringRequest = @"https://chocudan.com/api/shops/by_ids";
NSURL* urlRequest = [NSURL URLWithString:stringRequest];

NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:urlRequest];
request.HTTPMethod = @"POST";

NSString* bodyRequest = @"563c268b84ba489c4729f149";

//I have to tried a base64 convert here but still not work.
//request.HTTPBody = [NSData base64DataFromString:bodyRequest];

request.HTTPBody = [bodyRequest dataUsingEncoding:NSUTF8StringEncoding];


NSURLSessionConfiguration* configureSession = [NSURLSessionConfiguration defaultSessionConfiguration];

configureSession.HTTPAdditionalHeaders = @{@"Content-Type" : @"application/json charset=utf-8",
                                           @"Content-Lenght" : @"180"};

NSURLSession* session = [NSURLSession sessionWithConfiguration:configureSession];

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];

I have to try with postman and everything work fine. This is pictures.

Thank in advance.

回答1:

Try changing it too

    NSArray* bodyArray = @[@"563c268b84ba489c4729f149"]
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:bodyArray 
          options:NSJSONWritingPrettyPrinted error:&error];
   request.HTTPBody = jsonData;

回答2:

My raw data was like :

{
"email":"[e-mail]",
"password":"12345678"
}

and what I did is :

NSMutableDictionary *dict  = [[NSMutableDictionary alloc] init];
[dict setValue:@"[e-mail]" forKey:@"email"];
[dict setValue:@"12345678" forKey:@"password"];

NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict
                  options:NSJSONWritingPrettyPrinted error:&error];
                  request.HTTPBody = jsonData;

回答3:

This fixed it for me:

let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
    configuration.HTTPAdditionalHeaders = ["Content-Type" : "text/plain"]

回答4:

I guess that it was not data that was null but respondData was null?

That is because your service sends an Array with exactly one Object. JSONSerialisation creates an NSArray from that with one NSDictionary in it. The dictionary has the keys _id, contact and so on.

So it is

NSArray* respondData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];

BTW

 NSHTTPURLResponse* respHttp = (NSHTTPURLResponse*) response;

does not make much of a sense but does not harm either.

With respect to the body of your request, see mihir's answer. He is just right. It may help you understanding mihir's point when you do this:

NSString* bodyRequest = @"[563c268b84ba489c4729f149]";

However, this is rather quick & dirty but may help you understanding the principles. Once understood you will certainly follow mihir's suggestion.

回答5:

If you want to post raw, and param is a format of NSString, you only need to do this:

NSData *param_data = [encry_str dataUsingEncoding:NSUTF8StringEncoding];
murequest.HTTPBody = param_data;

If we can’t get anything from that response, notice that the response serializer is correct. Any additional settings, please deal it with server.