Ios 如何在post方法中使用NSURLSession传递字典？

我不知道如何通过POST使用NSURLSession将字典中的值传递到服务器。请帮我解决这个问题

我的字典只包含联系人信息名称和电话号码，其中键是此人的姓名，值是其电话号码

我有使用nsurl连接的示例代码-如何将其转换为使用NSURLSession

---

我使用以下方法解决问题：

NSError *error;

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL * url = [NSURL URLWithString:[ NSString stringWithFormat:@"http://holla.com/login/save_contact"]];;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];

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

[request setHTTPMethod:@"POST"];

NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys:@"212333333",@"ABCD",@"6544345345",@"NMHG",
                         nil];
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request setHTTPBody:postData];


NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)

{       

    if(error == nil)
    {
        NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
        NSLog(@"Data = %@",text);
    }

}];

[postDataTask resume];

---

我使用以下方法解决问题：

NSError *error;

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
NSURL * url = [NSURL URLWithString:[ NSString stringWithFormat:@"http://holla.com/login/save_contact"]];;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];

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

[request setHTTPMethod:@"POST"];

NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys:@"212333333",@"ABCD",@"6544345345",@"NMHG",
                         nil];
NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
[request setHTTPBody:postData];


NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)

{       

    if(error == nil)
    {
        NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
        NSLog(@"Data = %@",text);
    }

}];

[postDataTask resume];

---

我有办法，我有办法。