正確格式化NSString for JSON

Question

將我的NSString處理成有效的JSON字符串時遇到一些麻煩。

NSString *version  = @"1.1"; 
NSString *callMethod = @"auth.login"; 
NSString *paramsConfig = [NSString stringWithFormat:@"{\"email\":\"%@\",\"password\":\"%@\"}", usernameString, passwordString]; 

int queryId  = arc4random()% 10000000; 

NSDictionary *userData   = [NSDictionary dictionaryWithObjectsAndKeys:version, @"version", callMethod, @"method", [NSNumber numberWithInt:queryId], @"id", paramsConfig, @"params", nil]; 
NSString* jsonString   = [userData JSONRepresentation]; 

預期JSON字符串：

{"version":"1.1","params":"{"email":"s","password":"s"}","id":12345678,"method":"auth.login"} 

實際JSON字符串：

{"version":"1.1","params":"{\"email\":\"s\",\"password\":\"s\"}","id":12345678,"method":"auth.login"} 

不能確定我要去哪裏錯了。有什麼想法嗎？

感謝

山姆

Answer 1

您的JSON的paramsConfig部分是一個字符串，將被轉義爲這樣的。 IIRC，如果您將paramsConfig更改爲NSDictionary，然後在此處設置電子郵件和密碼的值，則會輸出正確的JSONRepresentation。