CODEWITHSUNDEEP
iosobjective-cnsurlsession
aircraft
aircraft

Reputation: 26886

NSMutableURLRequest's response do not contain the information

NSString *url = [NSString stringWithFormat: @"http://apis.haoservice.com/weather?cityname=%@&key=%@", cityname, China_Weather_APP_KEY];

NSString *url_after = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url_after]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"GET"];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", response);  // Here I print the response information
                                                }
                                            }];
[dataTask resume];

The NSLog information is this:

2017-02-08 12:17:21.324 XXX[4168:197023] <NSHTTPURLResponse: 0x608000436240> { URL: http://apis.haoservice.com/weather?cityname=%E6%88%90%E9%83%BD&key=af4587a7d87740ae9a0d73697e0cccc9 } { status code: 200, headers {
"Cache-Control" = private;
Connection = "keep-alive";
"Content-Encoding" = gzip;
"Content-Type" = "text/html; charset=utf-8";
Date = "Wed, 08 Feb 2017 03:48:39 GMT";
Server = "nginx/1.10.2";
"Transfer-Encoding" = Identity;
"X-AspNet-Version" = "4.0.30319";
"X-Powered-By" = "ASP.NET";
"X-Safe-Firewall" = "zhuji.360.cn 1.0.9.47 F1W1";
} }

But if I post this url to the browser:

http://apis.haoservice.com/weather?cityname=成都&key=af4587a7d87740ae9a0d73697e0cccc9

The page will show the result I want get:

enter image description here

Why my response did not contain the picture's information?

Upvotes: 0

Views: 36

Answers (1)

Nirav D
Nirav D

Reputation: 72410

You need to access the data that you have got with your server response to get the JSON response, so use NSJSONSerialization to get Dictionary object from the rsponse data.

if (error) {
    NSLog(@"%@", error);
} else {
    NSError* parseError;
    NSDictionary* json = [NSJSONSerialization JSONObjectWithData: data options:kNilOptions error:&parseError];
    NSLog(@"%@",json);                                   
}

Upvotes: 1

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