解决JsonExSerializer无法反序列化JSON时间问题

JsonExSerializer是一个.NET的Json序列化和反序列化库。近日在用JsonExSerializer解析twitter数据时发现，它无法反序列化Json时间日期类型的字段。经过一番摸索，找到解决办法，就是给它的Context里加一个自己的处理器，处理时间日期类型：

    public class DateTimeHandler : IExpressionHandler
    {
        public bool CanHandle(JsonExSerializer.Framework.Expressions.Expression expression)
        {
             return expression.ResultType.Equals(typeof(DateTime));
        }

        public bool CanHandle(Type objectType)
        {
            if (objectType.Equals(typeof(DateTime)))
            {
                return true;
            }
            return false;
        }

        public object Evaluate(JsonExSerializer.Framework.Expressions.Expression expression, object existingObject, IDeserializerHandler deserializer)
        {
            //Tue Feb 23 13:43:42 +0000 2010
            //-> Feb 23 2010 13:43:42 +0000
            var fields = expression.ToString().Split(' ');
            return Convert.ToDateTime(fields[1] + " " + fields[2] + " " + fields[5] + " " + fields[3] + " " + fields[4]);
        }

        public object Evaluate(JsonExSerializer.Framework.Expressions.Expression expression, IDeserializerHandler deserializer)
        {
            //Tue Feb 23 13:43:42 +0000 2010
            //-> Feb 23 2010 13:43:42 +0000
            var fields = expression.ToString().Split(' ');
            return Convert.ToDateTime(fields[1] + " " + fields[2] + " " + fields[5] + " " + fields[3] + " " + fields[4]);
        }

        public JsonExSerializer.Framework.Expressions.Expression GetExpression(object data, JsonExSerializer.Framework.Expressions.JsonPath currentPath, IExpressionBuilder serializer)
        {
            return null;
        }

        public bool IsReferenceable(object value)
        {
            return true;
        }
    }

反序列化时把这个处理器加上去即可：

            var serializer = new Serializer(typeof(List<Tweet>));
            serializer.Context.ExpressionHandlers.Add(new DateTimeHandler());
            return serializer.Deserialize(result) as List<Tweet>;