[英]Strange results serializing a dictionary to JSON
我目前正在研究將WCF用於REST服務。 我遇到的一個問題是序列化字典的結果。 我以前在建議的包裝類這篇文章連載由字符串表示的日期(如“20.10.2011”)和布爾變量的字典。 當我測試結果時,我看到以下內容:
{
"DeparturesResult":
{
"_x0032_1.10.2011":true,
"_x0032_4.10.2011":true,
"_x0032_6.10.2011":true,
"_x0032_8.10.2011":true,
"_x0033_1.10.2011":true
}
}
..每個鍵中的第一個字符被寫為UTF-8代碼。 如果在字符串前加上字母,則不會遇到此問題。 (例如d21.10.2011)
這是我用來序列化字典的代碼:公共類FlService:IFlService {#region IFlService成員
public AjaxDictionary<string, bool> Departures(string from, string to, string portFrom, string portTo)
{
var startDate = DateTime.Today; // DateTime.ParseExact(from, "dd.MM.yyyy", null);
var endDate = DateTime.ParseExact(to, "dd.MM.yyyy", null);
var client = new Timetables();
var result = client.GetJourneys(startDate, endDate.AddDays(1), portFrom, portTo);
var js = result
.GroupBy(x => x.DepartureTime.CarResToDateTime())
.Select(x => x.Key)
.OfType<DateTime>()
.Select(x => x.Date)
.Distinct()
.ToDictionary(x => x.Date.ToString("dd.MM.yyy"), x => true);
return new AjaxDictionary<string, bool>(js);
}
#endregion
#region Nested type: AjaxDictionary
[Serializable]
public class AjaxDictionary<TKey, TValue> : ISerializable
{
private readonly Dictionary<TKey, TValue> _dictionary;
public AjaxDictionary()
{
_dictionary = new Dictionary<TKey, TValue>();
}
public AjaxDictionary(Dictionary<TKey, TValue> dic)
{
_dictionary = dic;
}
public AjaxDictionary(SerializationInfo info, StreamingContext context)
{
_dictionary = new Dictionary<TKey, TValue>();
}
public TValue this[TKey key]
{
get { return _dictionary[key]; }
set { _dictionary[key] = value; }
}
#region ISerializable Members
public void GetObjectData(SerializationInfo info, StreamingContext context)
{
foreach (var key in _dictionary.Keys)
info.AddValue(key is string ? key as string : key.ToString(), _dictionary[key]);
}
#endregion
public void Add(TKey key, TValue value)
{
_dictionary.Add(key, value);
}
}
#endregion
}
編輯:在接受的答案中添加評論:這對於javascript是正確的,但是對於JSON卻不是。 看起來序列化器有點狂熱,不僅要序列化為JSON,還要確保JSON是javascript。 添加https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/JSON上的完整JSON語法
JSON = null
or true or false
or JSONNumber
or JSONString
or JSONObject
or JSONArray
JSONNumber = - PositiveNumber
or PositiveNumber
PositiveNumber = DecimalNumber
or DecimalNumber . Digits
or DecimalNumber . Digits ExponentPart
or DecimalNumber ExponentPart
DecimalNumber = 0
or OneToNine Digits
ExponentPart = e Exponent
or E Exponent
Exponent = Digits
or + Digits
or - Digits
Digits = Digit
or Digits Digit
Digit = 0 through 9
OneToNine = 1 through 9
JSONString = ""
or " StringCharacters "
StringCharacters = StringCharacter
or StringCharacters StringCharacter
StringCharacter = any character
except " or \ or U+0000 through U+001F
or EscapeSequence
EscapeSequence = \" or \/ or \\ or \b or \f or \n or \r or \t
or \u HexDigit HexDigit HexDigit HexDigit
HexDigit = 0 through 9
or A through F
or a through f
JSONObject = { }
or { Members }
Members = JSONString : JSON
or Members , JSONString : JSON
JSONArray = [ ]
or [ ArrayElements ]
ArrayElements = JSON
or ArrayElements , JSON
這是因為在JSON(或JavaScript)中,鍵名(或JavaScript中的屬性)不能以數字值開頭,因此它將這些字符序列化后放置以確保它們是正確的JSON格式
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