AFNetworking在發送請求的JSON參數中發送數組

我試圖通過POST將參數發送到我的服務器，它一般工作，但我無法弄清楚如何發送包含數組作爲參數的JSON 。以下是我試過的：AFNetworking在發送請求的JSON參數中發送數組

AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:myURL]]; 
NSMutableArray *objectsInCart = [NSMutableArray arrayWithCapacity:[_cart count]]; 
for(NSDictionary *dict in _cart) 
{ 
    NSObject *object = [dict objectForKey:@"object"]; 
    NSDictionary *objectDict = @{@"product_id": [NSString stringWithFormat:@"%d",[object productID]], 
           @"quantity": [NSString stringWithFormat:@"%d", [[dict objectForKey:@"count"] intValue]], 
           @"store_id": [NSString stringWithFormat:@"%d", [Store getStoreID]], 
           @"price": [NSString stringWithFormat:@"%.2f", [object price]]}; 
    [objectsInCart addObject:objectDict]; 
} 
NSError *error = nil; 
NSString *cartJSON = [[NSString alloc] initWithData:[NSJSONSerialization dataWithJSONObject:objectsInCart 
                        options:NSJSONWritingPrettyPrinted 
                         error:&error] 
              encoding:NSUTF8StringEncoding]; 

if(error) 
{ 
    NSLog(@"Error serializing cart to JSON: %@", [error description]); 
    return; 
} 

NSDictionary *parameters = @{@"status": @"SUBMITTED", 
          @"orders": cartJSON}; 

NSMutableURLRequest *orderRequest = [httpClient requestWithMethod:@"POST" 
                  path:@"/app/carts" 
                 parameters:parameters]; 

AFJSONRequestOperation *JSONOperation = [[AFJSONRequestOperation alloc] initWithRequest:orderRequest];

但是，發送此JSON時出現錯誤。任何建議都非常感謝！

來源

2013-08-20 Mason

我不知道服務器期望什麼，但通常情況下，JSON中的每個項目都有一個密鑰，包括數組。你現在只是發送數組，沒有密鑰。試試'NSString * cartJSON = @''products'：％@「，[[NSString alloc] initWithData：[NSJSONSerialization dataWithJSONObject：objectsInCart options：NSJSONWritingPrettyPrinted error：＆error] encoding：NSUTF8StringEncoding]; – dirkgroten

如果你看'參數'字典，數組的關鍵是'@「命令」' – Mason

好吧，我不好，我錯過了。你看過通過線路發送的實際數據嗎？我非常重視查爾斯代理這樣的應用程序，以攔截從我的應用程序到外部服務器的所有流量。 – dirkgroten

我沒有看到你指定要張貼JSON，所以我打賭你發送表單URL參數編碼，這是這樣的，根據AFHTTPClient文檔：

If a query string pair has a an NSArray for its value, each member of the array will be represented in the format field[]=value1&field[]=value2 . Otherwise, the pair will be formatted as "field=value". String representations of both keys and values are derived using the -description method. The constructed query string does not include the ? character used to delimit the query component.

如果您的服務器確實期待您張貼JSON，在第二行添加此告訴AFNetworking說：

// AFNetworking 1.0 
// httpClient is a subclass of AFHTTPClient 
httpClient.parameterEncoding = AFJSONParameterEncoding; 

// AFNetworking 2.0 
// httpClient is a subclass of AFHTTPRequestOperationManager or AFHTTPSessionManager 
httpClient.requestSerializer = AFJSONRequestSerializer;

你會然後刪除您的來電NSJSONSerialization，只是把objectsInCart到parameters DIC tionary。

甲側面說明：這是正常子類AFHTTPRequestOperationManager或AFHTTPSessionManager（AFNetworking 2.0）或AFHTTPClient（AFNetworking 1.0），並把這種類型的配置在initWithBaseURL:方法。（你可能不想爲每個請求啓動一個新的客戶端。）

來源

2013-08-21 01:00:00

加耶是的，我發現這一點，應該已經更新了這篇文章。謝謝！ – Mason

AFNetworking在發送請求的JSON參數中發送數組

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