在iOS中對於長字符串的http-post請求

Question

我正在尋找發送很長的字符串，這是一個編碼爲字符串的圖像。我需要使用POST方法發送這些信息。我在Android using key-value pair中實現了相同的功能，我需要在iOS中使用鍵值對實現相同的功能。請幫助我獲得有用的資源/方法。

編輯1

我有什麼企圖

[dictionnary setObject:@"admin" forKey:@"username"]; 
[dictionnary setObject:@"123123" forKey:@"password"]; 

NSError *error = nil; 

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionnary 
                options:kNilOptions 
                error:&error]; 

NSString *urlString = @"MY CALL URL"; 

NSURL *url = [NSURL URLWithString:urlString]; 
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; 
[request setHTTPMethod:@"POST"]; 

[request setHTTPBody:jsonData]; 
NSURLResponse *response = NULL; 
NSError *requestError = NULL; 
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&requestError]; 
NSLog(@"response is obtained"); 

NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding] ; 
NSLog(@"%@", responseString); 

EDIT 2

錯誤我得到

Request Error Error Domain=kCFErrorDomainCFNetwork Code=303 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 303.)" UserInfo=0x7ba0120 {NSErrorFailingURLKey=http://yahoo.com/, NSErrorFailingURLStringKey=http://yahoo.com/} 

Answer 1

可以使用的NSMutableDictionary

look this

Answer 2

添加您的圖像串在您的文章詞典：

[dictionnary setObject:imageEncodedString forKey:@"image"];