Code = -1016“`parameters`参数不是有效的JSON。”UserInfo = {NSLocalizedFailureReason =`parameters`参数是无效的JSON。}

Question

我正在清理一些代码并尝试在我的NSManagedObject类中放置一个serverRequest。完全相同的函数在它最初编写的UIViewController中完美地工作，但是，当我在CoreData对象文件中调用它时，我得到以下错误：

Error Domain=com.alamofire.error.serialization.request Code=-1016 "The `parameters` argument is not valid JSON." UserInfo={NSLocalizedFailureReason=The `parameters` argument is not valid JSON.}

我在原始案例和新案例中打印了我的“参数”，它们完全相同。我成功地访问了我在此CoreData对象类中设置的其他端点，但由于某种原因，这个端点失败了。

有任何想法吗？

Successful: uploading question packet ChecklistTABLEVIEW.swift

["answers": ["each": <_TtGCs23_ContiguousArrayStoragePs9AnyObject__ 0x604000c551b0>(
{
    answerString = "";
    "assigned_emails" =     (
        "[email protected]"
    );
    "checklist_id" = 186;
    questionId = 4274;
    rating = "";
    "report_time" = "2018-09-13 19:40:21 +0000";
},
{
    answerString = "";
    "assigned_emails" =     (
        "[email protected]"
    );
    "checklist_id" = 186;
    questionId = 293112;
    rating = "";
    "report_time" = "2018-09-13 19:40:21 +0000";
    selected =     (
    );
}
)
, "checklist_id": 186], "user": ["authentication_token": "TOKEN", "email": "[email protected]"], "count": 2]

Unsuccessful: uploading question packet CHECKLIST.swift

["answers": ["each": <_TtGCs23_ContiguousArrayStoragePs9AnyObject__ 0x600000c57ee0>(
{
    answerString = "";
    "assigned_emails" =     (
        "[email protected]"
    );
    "checklist_id" = 186;
    questionId = 4274;
    rating = "";
    "report_time" = "2018-09-13 19:40:21 +0000";
},
{
    answerString = "";
    "assigned_emails" =     (
        "[email protected]"
    );
    "checklist_id" = 186;
    questionId = 293112;
    rating = "";
    "report_time" = "2018-09-13 19:40:21 +0000";
    selected =     (
    );
}
)
, "checklist_id": 186], "user": ["authentication_token": "TOKEN", "email": "[email protected]"], "count": 2]

这些参数在Successful和Unsuccessful案例中完全相同，只是从不同的文件中调用它们。为什么会从AFNetworking获得序列化错误？

Answer 1

我发现了这个问题。我的参数中有一个日期，必须将其转换为String。

我使用此代码来查找具体问题。

if JSONSerialization.isValidJSONObject(params)
{
    if let data = try? JSONSerialization.data(withJSONObject: params, options: [])
    {
        print("JSON data object is: \(data)")
    }
}            
else
{
    do
    {
        let data = try JSONSerialization.data(withJSONObject: params, options: [])
        print("JSON data object is: \(data)")
    }
    catch let error as NSError
    {
        print("no  bueno: \(error)")
    }
}