将 POST 数据从 Objective-C 传递到 PHP

Question

我正在尝试将一些 POST 数据从 Objective-c 传递到 PHP，但 PHP 文件似乎没有获取数据。

这是我发送它的方式：

- (void) sendJSONData:(NSDictionary *)dictData {

    NSError *error;

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
    NSURL *url = [NSURL URLWithString:kRootWebService];
    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: @"TEST IOS", @"name",
                             @"IOS TYPE", @"typemap",
                             nil];
    NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
    [request setHTTPBody:postData];

    NSLog(@" URL: %@", request);
    NSLog(@" Body: %@", [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding]);

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

        NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*) response;
        NSLog(@"%@", httpResponse.allHeaderFields);
        if (httpResponse.statusCode == 200) {

            NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
            NSLog(@"This is my print out of data to string\n%@",str);

            //deseriealize the return
            id JSONObject = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];

            NSDictionary* dictJSON;
            NSArray* arrJSON;

            NSLog(@"%@", dictJSON);

        } else {

            NSLog(@"There was an error connecting with the server, the status code returned was %i", (int)httpResponse.statusCode);

        }

    }];

    [postDataTask resume];


}

这是URL（URL正确）和Body的日志：

URL: http://xxxxxxxx.com/xxxxxx.php }
2017-07-30 15:20:10.602 MirrorBox[89680:5646406]  Body: {"name":"TEST IOS","typemap":"IOS TYPE"}

这是请求标头的日志

2017-07-30 15:20:10.751 MirrorBox[89680:5646478] {
    Age = 0;
    Connection = "keep-alive";
    "Content-Length" = 34;
    "Content-Type" = "text/html";
    Date = "Sun, 30 Jul 2017 19:20:10 GMT";
    Server = "Apache/2";
    "X-Powered-By" = "PHP/5.5.22";
}

这是返回数据的日志，错误信息是我自己的：

This is my print out of data to string
{"key":"could not read POST data"}

这里是 PHP 文件：

<?php

    if (!$_POST['IOS_TYPE']) { 
        echo json_encode(array("key" => "could not read POST data"));
    } else { 
        echo json_encode(array("key" => "returned string"));
    }


?>

Answer 1

如果您使用密钥 .. 传递 POST，您应该使用相同的密钥访问

 <?php

   if (!$_POST['typemap']) { 
      echo json_encode(array("typemap" => "could not read POST data"));
   } else { 
       echo json_encode(array("typemap" => "returned string"));
   }


?>

或更好

  if (isset($_POST['typemap'])){
     if ($_POST['typemap'] == 'IOS TYPE' ) {
          echo 'IOS TYPE type in typemap POST';
     }
 }
  .....

Answer 2

由于您在请求正文中传递 JSON，请尝试以下方式：

 $content = file_get_contents('php://input');
 $obj     = json_decode($content , false);      // decode to stdObj
 $typemap = $obj->typemap;

或者如果您更喜欢使用关联数组：

 $ary     = json_decode($content , true);      // decode to array
 $typemap = $ary['typemap'];