转换为NSDictionary在Swift中返回nil

Question

我正在尝试在Swift中提交JSON-RPC请求，我正在关注此（Perform POST request in iOS Swift）指南。

不幸的是，通过这样做，我无法将答案的“结果”部分转换为NSDictionary：

if let responseDictionary = responseObject as? NSDictionary {
    if let errorDictionary = responseDictionary["error"] as? NSDictionary {
        println("error logging in (bad userid/password?): \(errorDictionary)")
    } else if let resultDictionary = responseDictionary["result"] as? NSDictionary {
        println("successfully logged in, refer to resultDictionary for details: \(resultDictionary)")
    } else {
        println("we should never get here")
        println("responseObject = \(responseObject)")
    }
}

其中responseObject是AnyObject。

我的回复对象如下所示：

{
id = 1;
jsonrpc = "2.0";
result = "[{\"ID\":11,\"Name\":\"MyName\",\"LLogon\":\"2015-03-16T13:04:14\"}]";}

Answer 1

正如Hot Licks和Martin R所指出的，这确实是服务器方面的问题。