如何使用NSURLSESSION通过mvc控制器Web服务从json post方法返回数据？

Question

首先请的，点击这个link然后...

我如何得到这个输出，如姓名，STD &分配到文本框，我已经在Xcode 5做到了这一点，但NSURLConnection的在Xcode 7.2未使用所以使用NSURLSESSION我如何绑定到文本框？

NSError *error = nil; 


    NSMutableDictionary *dic2 = [[NSMutableDictionary alloc] init]; 

    [dic2 setObject:@"324" forKey:@"grno"]; 


    NSMutableDictionary *dic = [[NSMutableDictionary alloc] init]; 

    [dic setObject:@"RestAPI" forKey:@"interface"]; 

    [dic setObject:@"StudentLogin" forKey:@"method"]; 

    [dic setObject:dic2 forKey:@"parameters"]; 


    NSData *postData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&error]; 


    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://ios.skyzon.in/STudent/STudentDetail"]]; 

    [req setHTTPMethod:@"POST"]; 

    [req setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 

    [req setHTTPBody:postData]; 


    NSURLSessionDataTask * dataTask =[defaultSession dataTaskWithRequest:req 

    completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { 

      NSLog(@"Response:%@ %@\n", response, error); 

      if(error == nil) 

      { 

        // NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding]; 

        // NSLog(@"Data = %@",text); 

        NSMutableDictionary *responseDic = [[NSMutableDictionary alloc]init]; 

        responseDic = [NSJSONSerialization JSONObjectWithData:postData options:NSJSONReadingAllowFragments error:&error]; 

        NSLog(@"%@",responseDic); 

        self.txt.text = [responseDic objectForKey:@"Name"]; 

        NSLog(@"%@",[responseDic objectForKey:@"Name"]); 

      } 

    }]; 

    [dataTask resume]; 

Answer 1

你可以像你这样的NSURLSESSION。

NSURLSession *session = [NSURLSession sharedSession]; 
    NSURLSessionDataTask *dataTask = [session dataTaskWithURL:[NSURL URLWithString:@"http://ios.skyzon.in/STudent/STudentDetail"] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { 
     NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; 
     NSLog(@"%@", json); 
self.txt.text = [responseDic objectForKey:@"Name"]; 

    }]; 

可能会帮助你。