Question

我正在制作一个webrequest，将类的某些属性传递给web api，所以我按照method 3 of this post中的说明制作了动态合约解析器：

public class DynamicContractResolver : DefaultContractResolver
{
    private IList<string> _propertiesToSerialize = null;

    public DynamicContractResolver(IList<string> propertiesToSerialize)
    {
        _propertiesToSerialize = propertiesToSerialize;
    }

    protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
    {
        IList<JsonProperty> properties = base.CreateProperties(type, memberSerialization);
        return properties.Where(p => _propertiesToSerialize.Contains(p.PropertyName)).ToList();
    }
}

示例用法：

var propsToSerialise = new List<string>()
{
    "body_html",
    "product_type",
    "published_scope",
    "title",
    "vendor",
    "handle"
};
DynamicContractResolver contractResolver = new DynamicContractResolver(propsToSerialise);
string json = JsonConvert.SerializeObject(product, Formatting.None, new JsonSerializerSettings { ContractResolver = contractResolver });

如果属性是基类的一部分，这非常有效，但如果属性是子类的一部分，那么它就不会被拾取

例如，该产品的子类为Option，我只想要该选项的colour属性。

我看了一下this post on SO但是它并不是很清楚GetItemTypeNames()是什么或如何正确使用它所以想知道是否有人知道如何更改{{ 1}}也处理子类

示例类：

DynamicContractResolver

Answer 1

我已将CreateProperties覆盖更改为：

，从而解决了我的问题

protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
{
    IList<JsonProperty> properties = base.CreateProperties(type, memberSerialization);
    return properties.Where(p => _propertiesToSerialize.Contains(string.Format("{0}.{1}", p.DeclaringType.Name, p.PropertyName))).ToList();
}

然后我可以将propsToSerialise变量更改为

var propsToSerialise = new List<string>()
{
    "Product.body_html",
    "Product.product_type",
    "Product.published_scope",
    "Product.title",
    "Product.vendor",
    "Product.handle",
    "Product.option",
    "Options.colour"
};

C＃json动态合约解析器为子类

1 个答案: