我目前正在尝试使用YamlDotNet库将YAML文档反序列化为标准.NET对象,例如标量值为string
,映射为Dictionary<string, object>
。
我猜Deserializer
类是最佳选择,但其输出为object
和Dictionary<object>
。我尝试像这样实现自定义INodeTypeResolver
:
class MyNodeTypeReslover : INodeTypeResolver
{
bool INodeTypeResolver.Resolve(NodeEvent nodeEvent, ref Type currentType)
{
if (currentType == typeof(object))
{
if (nodeEvent is SequenceStart)
currentType = typeof(List<object>);
else if (nodeEvent is MappingStart)
currentType = typeof(Dictionary<string, object>);
else if (nodeEvent is Scalar)
currentType = typeof(string);
return true;
}
return false;
}
}
并像这样使用它:
Deserializer deserializer = new Deserializer();
deserializer.TypeResolvers.Add(new MyNodeTypeReslover());
var res = deserializer.Deserialize(input);
但这似乎没有任何效果。有没有办法改变Deserializer
生成的对象类型?
答案 0 :(得分:0)
AFAIK,Deserialize接受一个类型参数,这非常好
%YAML 1.1
%TAG !namespace! _MyNamespace.NestedClass.Whatever.
---
entry_0: !namespace!MyMessage
format: Alert
desc: "Entry One! Uses the exact string representation of the desired type. (A bit fragile, IMHO)"
entry_1: !!message
format: Default
desc: "Entry Two! Uses a type registered beforehand."
entry_2:
format: Default
desc: "Entry Three! Just winging it, sometimes YamlDotNet is exceedingly clever."
...
可以通过
进行反序列化var dict = new Deserializer().Deserialize<Dictionary<string,MyMessage>>(
new StringReader(that_doc_up_there));
前提是MyMessage具有format和desc属性,并且只要它不在命名空间中。如果是,您可以事先使用反序列化器注册它,也可以为它创建一个新标签。 %TAG别名似乎吃了标签的第一个字符,所以我放了一个下划线。也许是个bug。 另一种方法是注册它,
deserializer.RegisterTagMapping(
"tag:yaml.org,2002:message", typeof(MyMessage));
答案 1 :(得分:0)
您使用INodeTypeResolver
的方向正确,但是您需要构建和使用自定义反序列化器:
DeserializerBuilder deserializerBuilder = new DeserializerBuilder()
.WithNodeTypeResolver(new MyNodeTypeResolver());
IDeserializer deserializer = deserializerBuilder.Build();
var res = deserializer.Deserialize(input);