iOS5'te JSON veri nesnesini sunucuya nasıl POST yaparım?

Question

veri türünü kullanarak, POST yöntemiyle bir alıcı sunucusuna iOS üzerinde oluşturulmuş yeni bir nesne göndermek istiyorum. IOS'taki numaralı veriden veri alma hakkında bildiğim kadarıyla, tüm JSON işlemenin Apple tarafından iOS 5'in kullanıma sunulması basitleştirildi. Ancak, JSON nesnelerini GETting'e aykırı olarak, POST'leri bulamadım. ... Ben denemek ve aşağıdaki gibi sorun görünüyordu çözmek aldı

ilk adımlar:

//build an info object and convert to json 
    NSDictionary *newDatasetInfo = [NSDictionary dictionaryWithObjectsAndKeys:name, @"name", language, @"language", nil]; 

    //convert object to data 
    NSData* jsonData = [NSJSONSerialization dataWithJSONObject:newDatasetInfo options:kNilOptions error:&error]; 

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:someURLSetBefore]; 
    [request setHTTPMethod:@"POST"]; 
    // any other things to set in request? or working this way? 

    [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
    // What to do with NSURLConnection? Or how to send differently? 

Ama gerçekten bir POST yöntemini kullanarak bir sunucuya bir JSON nesnesi göndermek nasıl bilmiyorum hiç. Herhangi biri bana yardım edebilir mi?

Answer 1

Etrafa biraz deneyerek dışarı çalıştı, burada benim kod:

//build an info object and convert to json 
    NSDictionary *newDatasetInfo = [NSDictionary dictionaryWithObjectsAndKeys:name, @"name", language, @"language", nil]; 

    //convert object to data 
    NSData* jsonData = [NSJSONSerialization dataWithJSONObject:newDatasetInfo options:kNilOptions error:&error]; 

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:someURLSetBefore]; 
    [request setHTTPMethod:@"POST"]; 
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 
    [request setValue:@"application/json" forHTTPHeaderField:@"Accept"]; 
    [request setHTTPBody:jsonData]; 

    // print json: 
    NSLog(@"JSON summary: %@", [[NSString alloc] initWithData:jsonData 
                encoding:NSUTF8StringEncoding]); 
    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
    [connection start]; 

Answer 2

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://webstar52.com/demo/webcommunity/work.php"]]]; 
    NSString *post = [NSString stringWithFormat:@"&tag=%@&user_id=%@",@"getcontact",@"10408"]; 
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; 
    NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]]; 
    [request setHTTPMethod:@"POST"];  
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"]; 
    [request setHTTPBody:postData]; 
    conn = [[NSURLConnection alloc]initWithRequest:request delegate:self]; 

Answer 3

NSString * strUrl = @ "URL"; NSURL * url = [NSURL URLWithString: strUrl];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:60.0]; 

// For set postdata in string 
NSString *strPatientID = [NSString stringWithFormat:@"%@%@%@%@",self.txtDegit1.text,self.txtDegit2.text,self.txtDegit3.text,self.txtDegit4.text]; 
NSString *deviceToken = @""; 
postString = [NSString stringWithFormat:@"practiceid=%@&email=%@&password=%@&devicetoken=%@",strPatientID,self.txtUsername.text,self.txtPassword.text,deviceToken]; 


NSMutableData *httpDataBody = [NSMutableData data]; 
[httpDataBody appendData:[postString dataUsingEncoding:NSUTF8StringEncoding]]; 

NSString *strPostLength = [NSString stringWithFormat:@"%lu",[httpDataBody length]]; 

if ([httpDataBody length ] > 0){ 

    [request addValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"]; 
    [request setHTTPMethod:@"POST"]; 
    [request addValue:strPostLength forHTTPHeaderField:@"Content-Type"]; 
    [request setHTTPBody:httpDataBody]; 

} 

urlConnection = [[NSURLConnection alloc]initWithRequest:request delegate:self]; 
[urlConnection start]; 

Answer 4

- (IBAction)txtFetchData2:(id)sender { 
NSString *queryString = [NSString stringWithFormat:@"http://example.com/username.php?name=%@", [self.txtName text]]; 
NSMutableURLRequest *theRequest=[NSMutableURLRequest 
          requestWithURL:[NSURL URLWithString: 
              queryString] 
          cachePolicy:NSURLRequestUseProtocolCachePolicy 
          timeoutInterval:60.0]; 
NSDictionary* jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys: 
           @"Value1", @"Key1", 
           @"Value2", @"Key2", 
           nil]; 
NSError *error; 
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary 
         options:NSJSONWritingPrettyPrinted error:&error]; 
[theRequest setHTTPMethod:@"POST"]; 
[theRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 
// should check for and handle errors here but we aren't 
[theRequest setHTTPBody:jsonData]; 
[NSURLConnection sendAsynchronousRequest:theRequest queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { 
    if (error) { 
     //do something with error 
    } else { 
     NSString *responseText = [[NSString alloc] initWithData:data encoding: NSASCIIStringEncoding]; 
     NSLog(@"Response: %@", responseText); 

     NSString *newLineStr = @"\n"; 
     responseText = [responseText stringByReplacingOccurrencesOfString:@"<br />" withString:newLineStr];    
     [self.lblData setText:responseText]; 
    } 
}]; 
}