public object ConvertTo(Json value, Type conversionType)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
if (conversionType == null)
{
throw new ArgumentNullException(nameof(conversionType));
}
if (!typeof(System.Collections.IList).IsAssignableFrom(conversionType))
{
throw new ArgumentException("JsonListFormat 转换异常,传入的 [Type] 必须是实现了 ICollection<T> 的类型!");
}
var itemType = MetaType.GetListItemType(conversionType);
if (itemType == null)
{
throw new InvalidCastException();
}
if (value == Json.Null)
{
return(null);
}
if (value is not JsonArray jarray)
{
throw new InvalidCastException();
}
var collection = (System.Collections.IList)Activator.CreateInstance(conversionType, true);
foreach (var json in jarray)
{
var item = JsonSerializer.Deserialize(json, itemType);
collection.Add(item);
}
return(collection);
}
/// <summary>
/// 反序列化 IList
/// </summary>
/// <exception cref="JsonException"></exception>
/// <exception cref="JsonFormatException"></exception>
/// <exception cref="JsonSerializerException"></exception>
private static IList CollectionDeserialize(JsonArray array, IList list)
{
var type = list.GetType();
if (type.IsArray)
{
var eleType = type.GetElementType();
var count = Math.Min(array.Count, list.Count);
for (int i = 0; i < count; i++)
{
list[i] = Deserialize(array[i], eleType);
}
}
else
{
var eleType = MetaType.GetListItemType(type);
foreach (var jval in array)
{
list.Add(Deserialize(jval, eleType));
}
}
return(list);
}
