如何将此邮递员请求转换为 iOs 代码

How can transform this Postman Request into iOs Code

我收到了以下 Postman 请求,它工作正常(屏幕截图 http://postimg.org/image/s7zm3qhvh/)。但是当我在 iOS 中尝试相同的方法时,它将不起作用。也许有人可以告诉我一些信息为什么。

我的Objective-c代码:

UIImage *yourImage= [UIImage imageNamed:@"login-main-bg.png"];


NSString *imageString = [UIImagePNGRepresentation(yourImage) base64Encoding];

NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
                      imageString, @"image",
                      nil];
NSError *error;

NSData* jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
if (error) {
    NSLog(@"%@",[error localizedDescription]);
}
NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[jsonData length]];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:@"http://server.website.net/api/collaboration/ImageTest"]];
[request setHTTPMethod:@"POST"];
[request setValue:@"multipart/form-data" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:jsonData];

 //print json:
NSLog(@"JSON summary: %@", [[NSString alloc] initWithData:jsonData
                            encoding:NSUTF8StringEncoding]);
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];

希望有人能帮助我!谢谢!

您正在 post 对图像的 base64 编码字符串进行 json 表示。 postman 请求正在执行具有多部分形式边界的原始二进制文件 post。

您想要更像这里显示的内容