使用 JSON 将 Facebook 用户数据发布到服务器

Question

我是 ios 编程的初学者。我正在为我的应用程序集成 fb 身份验证。我可以使用 NSlog 成功登录并在控制台上获取用户数据。现在，我想使用 json 将用户数据（如姓名、电子邮件 ID 等）发送到服务器。我搜索了很多 get this post 但我不明白。根据我的代码，任何示例代码示例都很棒。这是我试过的。我可以用空值访问我的服务器。请指导我，如何将 first_name、last_name 等参数发送到服务器。

(IBAction)btnFacebookPressed:(id)sender {
FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login logInWithReadPermissions:@[@"email"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
    if (error) {
        // Process error
    } else if (result.isCancelled) {
        // Handle cancellations
    } else {
        // If you ask for multiple permissions at once, you
        // should check if specific permissions missing
        if ([result.grantedPermissions containsObject:@"email"])
        {
            // Do work
            if ([FBSDKAccessToken currentAccessToken])
            {

                [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"id, name, first_name, last_name, email"}]

                 startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error)
                {

                     if (!error)
                     {
                         NSDictionary *userData = (NSDictionary *)result;
                         NSString *facebookID = userData[@"id"];
                         NSString *userName = userData[@"name"];
                         NSString *firstName = userData[@"first_name"];
                         NSString *lastName = userData[@"last_name"];
                         NSString *emailid = userData[@"email"];

                         NSLog(@"user data:%@", userData);

                         //NSLog(@"fetched user:%@", result);


                         NSMutableURLRequest *request = [NSMutableURLRequest
                                                         requestWithURL:[NSURL URLWithString:@"http:xxxxxxxxxxxxx"]];

                         NSDictionary *requestData = [[NSDictionary alloc] initWithObjectsAndKeys:facebookID,@"userId", firstName,@"firstName", lastName,@"lastName",emailid,@"emailId", nil];

                         NSLog(@"requested json data is: %@", requestData);

                         NSData *postData = [NSJSONSerialization dataWithJSONObject:requestData options:0 error:&error];
                         NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];
                        [request setHTTPMethod:@"POST"];
                        [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
                        [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
                        [request setValue:@"application/x-www-form-urlencoded; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
                        [request setHTTPBody:postData];

                         NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

                         NSError *error = [[NSError alloc] init];
                         NSHTTPURLResponse *response = nil;
                         NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
                         NSLog(@"Response code: %ld", (long)[response statusCode]);


                     }
                 }];
            }





            {
            [self performSegueWithIdentifier:@"loginSuccess" sender:self];
            }

        }
    }
}];
}

@end

Answer 1

终于，我成功了:)这是代码，可能对像我这样的初学者有所帮助。虽然代码没有优化，但它可以帮助人们理解基本功能。我正在发布完整代码，其中包括自定义 facebook 登录按钮、获取 fb 用户数据以及使用嵌套 json 在服务器上发布此数据。

- (void)viewDidLoad {
[super viewDidLoad];
}
-(void)didReceiveMemoryWarning 
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.

}
-(IBAction)btnFacebookPressed:(id)sender {
FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login logInWithReadPermissions:@[@"email"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
    if (error) {
        // Process error
    } else if (result.isCancelled) {
        // Handle cancellations
    } else {
        // If you ask for multiple permissions at once, you
        // should check if specific permissions missing
        if ([result.grantedPermissions containsObject:@"email"])

{
            if ([FBSDKAccessToken currentAccessToken])
            {

[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"id, name, first_name, last_name, email"}]

                 startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error)
                {

                     if (!error)
                     {
                         NSDictionary *userData = (NSDictionary *)result;
                         NSString *facebookID = userData[@"id"];
                         NSString *userName = userData[@"name"];
                         NSString *firstName = userData[@"first_name"];
                         NSString *lastName = userData[@"last_name"];
                         NSString *emailid = userData[@"email"];

                         NSLog(@"user data:%@", userData);
                         NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://xxxxxxxxxxxxxxx(your connection url)"]];
                         NSDictionary *newDataInfo =[NSDictionary dictionaryWithObjectsAndKeys:facebookID,@"userId", firstName,@"firstName", lastName,@"lastName",emailid,@"emailID",nil];

                         NSDictionary *requestData = [[NSDictionary alloc] initWithObjectsAndKeys:newDataInfo,@"rqBody", nil];



                         NSData *postData = [NSJSONSerialization dataWithJSONObject:requestData options:kNilOptions error:&error];

                         NSDictionary *json = [NSJSONSerialization JSONObjectWithData:postData
                                                                              options:kNilOptions
                                                                                error:&error];
                         NSString *jsonString = [[NSString alloc] initWithData:postData
                                                                      encoding:NSUTF8StringEncoding];
                         NSLog(@"Response JSON=%@", jsonString);



                         NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];

                        [request setHTTPMethod:@"POST"];
                        [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
                         [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
                        [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
                        //[request setValue:@"application/x-www-form-urlencoded; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
                        [request setHTTPBody:postData];

                         NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

                         NSError *error = [[NSError alloc] init];
                         NSHTTPURLResponse *response = nil;
                         NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
                         NSLog(@"Response code: %ld", (long)[response statusCode]);
 }
                 }];
            }

            {
                [self performSegueWithIdentifier:@"loginSuccess" sender:self];
            }

        }
    }
}];

发布 json 会像这样

Response JSON={"rqBody":{"firstName":"Kunal","lastName":"Kumar","emailID":"abcd@efgh.com","userId":"1234567890"}}

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