Question

我一直在尝试从我的ViewControllers之一发送一个帖子请求，该请求从另一个ViewController通过

收集一些数据

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender

无论如何，当我尝试发送post请求将变量发送到数据库时，最后两个参数值存储为0.我已经将float变量转换为NSStrings。在通过NSLog发送帖子请求之前，我检查了以确保值正确无误。但它仍然显示为零。当我通过具有完全相同值的Web浏览器手动输入表单时，它们将存储在数据库中。

我的帖子请求如下所示：

NSString *dateString = _date.text;
NSString *times = _time.text;
NSString *shape_illuminated = _shape.text;
NSString *orientation_illuminatedString = _orientation.text;
NSLog(@"compass is:%@%@", compassReceived, rollReceived);

NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];

NSURL * url = [NSURL URLWithString:@"http://example.com/mobile_app/submit.php"];
NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:url];
NSString * params = [NSString stringWithFormat:@"date=%@&time=%@&shape_illuminated=%@&orientation_illuminated=%@&=compass_direction=%@&=degreehorizon=%@", dateString, times, shape_illuminated, orientation_illuminatedString, compassReceived, rollReceived];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:[params dataUsingEncoding:NSUTF8StringEncoding]];

NSURLSessionDataTask * dataTask =[defaultSession dataTaskWithRequest:urlRequest
                                                   completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                       NSLog(@"Response:%@ %@\n", response, error);
                                                       if(error == nil)
                                                       {
                                                           NSString * text = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
                                                           NSLog(@"HttpReponseData = %@",text);
                                                           NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];



                                                               UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Account error"
                                                                                                               message:[NSString stringWithFormat:@"%@", dictionary]
                                                                                                              delegate:nil
                                                                                                     cancelButtonTitle:@"OK"
                                                                                                     otherButtonTitles:nil];
                                                               [alert show];

                                                       }

                                                   }];
[dataTask resume];

这些NSLog的一些值是：

罗盘是：127.0Angle：99.485866

在mysql中，我将字段设置为浮点数。

有什么想法吗？

UPADATE：我试着对compass_direction和degreehorizon的值进行硬编码，但它仍然没有用。

更新：我现在尝试使用以下方法正确配置url参数：

-(NSString *)urlenc:(NSString *)val
{
    CFStringRef safeString =
    CFURLCreateStringByAddingPercentEscapes(NULL,
                                            (CFStringRef)val,
                                            NULL,
                                            CFSTR("/%&=?$#+-~@<>|,.()[]{}^!"),
                                            kCFStringEncodingUTF8);
    return [NSString stringWithFormat:@"%@", safeString];
}

然后添加：

SString *query =
    [NSString stringWithFormat:@"shape_illuminated=%@&orientation_illuminated=%@&=compass_direction=%@&=degreehorizon=%@",
     [self urlenc:shape_illuminated],
     [self urlenc:orientation_illuminatedString],
     [self urlenc:convertedCompass],
     [self urlenc:convertedRoll]];
     NSLog(@"%@", query);
     [urlRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content- type"];
    [urlRequest setHTTPMethod:@"POST"];
    [urlRequest setHTTPBody:[query dataUsingEncoding:NSUTF8StringEncoding]];

但这两个值仍未发送。 nslog的输出对我来说很好看。我甚至制作了一个php表格并在我的电脑上输入了相同的值，效果很好，所以我不知道这里发生了什么。

IOS浮动不通过POST请求发送

0 个答案: