PUT請求，更改標題和使用RESTkit

Question

保存在覈心數據響應我要發送到服務器上，使用以下請求標頭的PUT請求的請求：

Content-Type: application/json; charset=UTF-8 

而下面NSDictionary：

{"title": "Sumit"} 

我正在做一個使用reskit的請求，提出了請求，但給出了有關頭的錯誤。 我想知道如何在向遠程服務器發送請求時設置標題和字典。 另外，該方法是最好的RKObjectManager對之間的這種任務： -

方法1： -

- NSMutableURLRequest *request = [manager requestWithObject:newImage 
                method:RKRequestMethodPUT 
                path:[kImageUrl stringByAppendingString:imageUrl] 
               parameters:jsonParameters]; 

方法2： -

- (NSMutableURLRequest *)multipartFormRequestWithObject:(id)object 
               method:(RKRequestMethod)method 
                path:(NSString *)path 
              parameters:(NSDictionary *)parameters 
           constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block; 

錯誤我得到： -

(400 Bad Request) [0.4221 s]: Error Domain=AFNetworkingErrorDomain Code=-1016 
"Expected content type {(
    "application/x-www-form-urlencoded", 
    "application/json" 
)}, got text/plain" UserInfo=0xa0951c0 {NSLocalizedRecoverySuggestion=Bad Request, 
AFNetworkingOperationFailingURLRequestErrorKey=<NSMutableURLRequest 
http://staging.zoomdeck.com/api/image/c5ot31sxnh8v/>, 
NSErrorFailingURLKey=http://staging.zoomdeck.com/api/image/c5ot31sxnh8v/, 
NSLocalizedDescription=Expected content type {(
    "application/x-www-form-urlencoded", 
    "application/json" 
)}, got text/plain, AFNetworkingOperationFailingURLResponseErrorKey=< 
NSHTTPURLResponse: 0xa194530>} 
2013-01-16 17:19:43.860 Zoomdeck[2905:4a07] E 
restkit.network:RKObjectRequestOperation.m:285 Object request failed: 
Underlying HTTP request operation failed with error: Error 
Domain=AFNetworkingErrorDomain Code=-1016 "Expected content type {(
    "application/x-www-form-urlencoded", 
    "application/json" 
)}, got text/plain" UserInfo=0xa0951c0 {NSLocalizedRecoverySuggestion=Bad Request, 
AFNetworkingOperationFailingURLRequestErrorKey=<NSMutableURLRequest 
http://staging.zoomdeck.com/api/image/c5ot31sxnh8v/>, 
NSErrorFailingURLKey=http://staging.zoomdeck.com/api/image/c5ot31sxnh8v/, 
NSLocalizedDescription=Expected content type {(
    "application/x-www-form-urlencoded", 
    "application/json" 
)}, got text/plain, AFNetworkingOperationFailingURLResponseErrorKey= 
<NSHTTPURLResponse: 0xa194530>} 
2013-01-16 17:19:43.861 Zoomdeck[2905:c07] Expected content type {(
    "application/x-www-form-urlencoded", 
    "application/json" 
)}, got text/plain 

Answer 1

您的其他服務期望內容類型

"application/x-www-form-urlencoded" 

或

"application/json" 

但它得到的內容類型

text/plain 

你要設置的contentType爲您的要求是這樣的：

NSMutableURLRequest *request = [manager requestWithObject:newImage 
               method:RKRequestMethodPUT 
               path:[kImageUrl stringByAppendingString:imageUrl] 
              parameters:jsonParameters]; 



[request setValue:@"application/json" forHTTPHeaderField:@"content-type"];