有没有一种快速的方法将NSDictionary发布到Python/Django服务器？

我希望向运行Django的服务器发送一个NSDictionary，如果我只需要很少或根本不需要编写编码器/解析器，我会更愿意这样做

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是否有一种简单的方法来完成此任务？

iOS不支持将此作为一行程序来完成，但您可以这样做：

@interface NSString (URLEncoding)

- (NSString *)urlEncodedUTF8String;

@end

@interface NSURLRequest (DictionaryPost)

+ (NSURLRequest *)postRequestWithURL:(NSURL *)url
                          parameters:(NSDictionary *)parameters;

@end

@implementation NSString (URLEncoding)

- (NSString *)urlEncodedUTF8String {
  return (id)CFURLCreateStringByAddingPercentEscapes(0, (CFStringRef)self, 0,
    (CFStringRef)@";/?:@&=$+{}<>,", kCFStringEncodingUTF8);
}

@end

@implementation NSURLRequest (DictionaryPost)

+ (NSURLRequest *)postRequestWithURL:(NSURL *)url
                          parameters:(NSDictionary *)parameters {

  NSMutableString *body = [NSMutableString string];

  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
  [request setHTTPMethod:@"POST"];
  [request addValue:@"application/x-www-form-urlencoded"
           forHTTPHeaderField:@"Content-Type"];

  for (NSString *key in parameters) {
    NSString *val = [parameters objectForKey:key];
    if ([body length])
      [body appendString:@"&"];
    [body appendFormat:@"%@=%@", [[key description] urlEncodedUTF8String],
                                 [[val description] urlEncodedUTF8String]];
  }
  [request setHTTPBody:[body dataUsingEncoding:NSUTF8StringEncoding]];
  return request;
}

@end

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请注意，在本例中，我们并不关心响应。如果您关心它，请提供一个块，这样您就可以使用它做一些事情。

iOS 5在框架中支持它。看看NSJSONSerialization。下面是post的示例代码。下面的代码中省略了创建请求对象

NSDictionary *postDict = [NSDictionary dictionaryWithObjectsAndKeys:[NSDictionary dictionaryWithObjectsAndKeys:API_KEY, @"apiKey", userName, @"loginUserName", hashPassword, @"hashPassword", nil], @"loginReq", nil];

[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"content-type"];
NSError *error = nil;
[request setHTTPBody:[NSJSONSerialization dataWithJSONObject:postDict options:0 error:&error]];

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这是否支持复杂对象？包含和字典数组的字典？您现在可以使用NSString的“stringByRemovingPercentEncoding”方法，而不是此答案中的NSString类别增强。（iOS 7.0+）

NSDictionary *postDict = [NSDictionary dictionaryWithObjectsAndKeys:[NSDictionary dictionaryWithObjectsAndKeys:API_KEY, @"apiKey", userName, @"loginUserName", hashPassword, @"hashPassword", nil], @"loginReq", nil];

[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"content-type"];
NSError *error = nil;
[request setHTTPBody:[NSJSONSerialization dataWithJSONObject:postDict options:0 error:&error]];