Question

我想在我的app.my中JSON格式JSON是这样的：

{
    user: {
      id: 2
    },
    items: [
      {
        id: 2,
        num: 3
      }
    ]
}

我可以用这段代码制作JSON格式：

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

    NSMutableDictionary *users = [[NSMutableDictionary alloc]init];
    [users setObject:@"2" forKey:@"id"];

    NSMutableDictionary *item = [[NSMutableDictionary alloc]init];
    [item setObject:@"22" forKey:@"id"];
    [item setObject:@"33" forKey:@"num"];

    NSMutableArray *itemArray = [[NSMutableArray alloc]initWithObjects:item, nil];

    [json setObject:users forKey:@"user"];
    [json setObject:itemArray forKey:@"items"];

    NSLog(@"%@",json);

    NSError *error = nil;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:json
                                                       options:0
                                                         error:&error];

现在我想知道这是真的吗？如果这是真的，请指导我如何使用JSON方法将此POST发送到网址？

此代码用于发送JSON：

NSURL *url = [NSURL URLWithString: @"http://192.168.1.193/deliapi/order/new?token=absc"];

    NSString *postLength = [NSString stringWithFormat:@"%d",[jsonData length]];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];

    [request setURL:url];

    [request setHTTPMethod:@"POST"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setHTTPBody:jsonData];
    NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];

    [conn start];


    if(conn)
    {
        NSLog(@"Connection Successful");
    }
    else
    {
        NSLog(@"Connection could not be made");
    }

Answer 1

我的朋友你的代码是对的！你应该为HeaderField确定application / json：

编写此代码：

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

我希望能帮到你!!!

如何使用POST方法发送json格式

1 个答案: