对不起，这个新问题，但我正在为这个问题撕心裂肺。我可以通过 FireFox 的 POSTER 之类的程序成功地将数据发布到我的端点 URL。但是，我正在尝试将相同的 JSON 数据从我的应用程序发布到我的端点 URL(Drupal 服务 push_notifications 端点)，但由于某种原因它无法成功发布。这是我正在使用的代码:

ViewController.m

NSString *urlString1 = @"http://app.com/endpoint001/push_notifications";
 NSDictionary *jsonBodyDict = @{@"token":postDeviceID, @"type":@"ios"};
 NSData *jsonBodyData = [NSJSONSerialization dataWithJSONObject:jsonBodyDict options:kNilOptions error:nil];
 // watch out: error is nil here, but you never do that in production code. Do proper checks!

 NSString *urlString2 = [NSString stringWithFormat:@"http://app.com/endpoint001/push_notifications?token=%@&type=%@",
                         postDeviceID,@"ios"];

 NSMutableURLRequest *request = [NSMutableURLRequest new];
 request.HTTPMethod = @"POST";

 // for alternative 1:
 [request setURL:[NSURL URLWithString:urlString1]];
 [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
 [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
 [request setHTTPBody:jsonBodyData];
 [request addValue:csrfToken forHTTPHeaderField:@"X-CSRF-Token"];

 // for alternative 2:
 [request setURL:[NSURL URLWithString:urlString2]];
 // no body needed, though that ultimately depends on your server. Also, I didn't test this for lack of a backend :)

 NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
 NSURLSession *session = [NSURLSession sessionWithConfiguration:config
                                                       delegate:nil
                                                  delegateQueue:[NSOperationQueue mainQueue]];
 NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                         completionHandler:^(NSData * _Nullable data,
                                                             NSURLResponse * _Nullable response,
                                                             NSError * _Nullable error) {
                                             NSLog(@"Yay, done! Check for errors in response!");

                                             NSHTTPURLResponse *asHTTPResponse = (NSHTTPURLResponse *) response;
                                             NSLog(@"The response is: %@", asHTTPResponse);
                                             // set a breakpoint on the last NSLog and investigate the response in the debugger

                                             // if you get data, you can inspect that, too. If it's JSON, do one of these:
                                             NSDictionary *forJSONObject = [NSJSONSerialization JSONObjectWithData:data
                                                                                                           options:kNilOptions
                                                                                                             error:nil];
                                             // or
                                             NSArray *forJSONArray = [NSJSONSerialization JSONObjectWithData:data
                                                                                                     options:kNilOptions
                                                                                                       error:nil];

                                             NSLog(@"One of these might exist - object: %@ \n array: %@", forJSONObject, forJSONArray);

                                         }];
 [task resume];

2017-07-17 17:31:11.421281-0700 app[977:206852] Yay, done! Check for errors in response!
2017-07-17 17:31:11.422198-0700 app[977:206852] The response is: <NSHTTPURLResponse: 0x170239b40> { URL: http://app.com/endpoint001/push_notifications?token=9526687d594944513b0wabf704eae3223f0de9bf69136a0aae3ab046863474b1&type=ios } { status code: 401, headers {
    "Cache-Control" = "no-cache, must-revalidate";
    Connection = "keep-alive";
    "Content-Type" = "application/json";
    Date = "Tue, 18 Jul 2017 00:14:35 GMT";
    Expires = "Sun, 19 Nov 1978 05:00:00 GMT";
    Server = Apache;
    "Transfer-Encoding" = Identity;
    Vary = Accept;
    "X-Content-Type-Options" = nosniff;
} }
2017-07-17 17:31:27.172085-0700 app[977:207024] XPC connection interrupted
2017-07-17 17:31:27.172311-0700 app[977:206852] One of these might exist - object: (
    "CSRF validation failed"
) 
 array: (
    "CSRF validation failed"
)

最佳答案

汤姆的回答给出了正确的方向，但我看到缺乏描述代码实际所做的事情让你感到困惑。此外，您使用的是不推荐使用的方法(来自 NSURLConnection )，所以我使用 NSURLSession 做了一个快速(未经测试)的示例及其相关类。别担心，它基本上是一样的。

话虽如此，您在原始代码中尝试此操作的方式让我怀疑您是否真的在发送 json 正文(即您的后端期望)，或者更确切地说系统依赖于无聊的 URL 参数。所以我在我的代码中添加了两种方式:

NSString *postDeviceID = @"something";

NSString *urlString1 = @"http://myurl.com/endpoint01/push_notifications";
NSDictionary *jsonBodyDict = @{@"token":postDeviceID, @"type":@"ios"};
NSData *jsonBodyData = [NSJSONSerialization dataWithJSONObject:jsonBodyDict options:kNilOptions error:nil];
// watch out: error is nil here, but you never do that in production code. Do proper checks!

NSString *urlString2 = [NSString stringWithFormat:@"http://myurl.com/endpoint01/push_notifications?token=%@&type=%@",
                        postDeviceID,@"ios"];

NSMutableURLRequest *request = [NSMutableURLRequest new];
request.HTTPMethod = @"POST";

// for alternative 1:
[request setURL:[NSURL URLWithString:urlString1]];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setHTTPBody:jsonBodyData];

// for alternative 2:
[request setURL:[NSURL URLWithString:urlString2]];
// no body needed, though that ultimately depends on your server. Also, I didn't test this for lack of a backend :)

NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:config
                                                      delegate:nil
                                                 delegateQueue:[NSOperationQueue mainQueue]];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                        completionHandler:^(NSData * _Nullable data,
                                                            NSURLResponse * _Nullable response,
                                                            NSError * _Nullable error) {
                                            NSLog(@"Yay, done! Check for errors in response!");

                                            NSHTTPURLResponse *asHTTPResponse = (NSHTTPURLResponse *) response;
                                            NSLog(@"The response is: %@", asHTTPResponse);
                                            // set a breakpoint on the last NSLog and investigate the response in the debugger

                                            // if you get data, you can inspect that, too. If it's JSON, do one of these:
                                            NSDictionary *forJSONObject = [NSJSONSerialization JSONObjectWithData:data
                                                                                                          options:kNilOptions
                                                                                                            error:nil];
                                            // or
                                            NSArray *forJSONArray = [NSJSONSerialization JSONObjectWithData:data
                                                                                                    options:kNilOptions
                                                                                                      error:nil];

                                            NSLog(@"One of these might exist - object: %@ \n array: %@", forJSONObject, forJSONArray);

                                        }];
[task resume];

关于ios - Obj-C - POST JSON 数据到服务器？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44814745/