JsonConvert .NET序列化/反序列化只读

问题描述

此刻，我正在使用REST Api，但我无法控制它，并已建立与我从Api接收到的json相对应的模型.

I'm working with a REST Api at the moment which I have no control over and have built models to correspond with the json which I receive from the Api.

有问题的Api不允许我在发布文章时将整个模型推回去，因此我需要找到一种方法来对Deserialize进行完全反序列化，但只能在序列化时写入选定的数据.

The Api in question though doesn't allow me to push the whole model back when doing a post so I need to find a way to Deserialize the json in full but only write selected data when Serializing.

到目前为止，我已经尝试了JsonIgnore，它执行了上面所说的操作，并且完全忽略了该属性.

So far I have tried JsonIgnore which does what it says on the tin and completely ignores the property.

然后我创建了一个自定义属性JsonWriteAttribute并将其应用于我要序列化的属性.

I then created a Custom Attribute JsonWriteAttribute and applied it to the properties I want to serialise.

我已经研究了重写DefaultContractResolver CreateProperties方法，然后仅获取具有该属性的属性，但是我似乎无法从该方法或Resolver中的属性中确定我是否正在执行读取或写入操作.

I've looked at overriding the DefaultContractResolver CreateProperties method to then only get properties with the attribute but I cant seem to determine from the method or a property in the Resolver if I'm doing a read or write.

我也尝试过查看自定义的JsonConverter，但是从此看来，我无法中断管道，然后必须自己处理所有写入.我在这里错过了某些东西，因为它似乎是正确的主意?

I've also tried looking at a custom JsonConverter but it seems like from that I cant interrupt a pipeline and have to then handle all the write myself. Am I missing something here as it seems like the right idea?

有人使用Json.Net进行序列化，反序列化时，找到了一种将属性标记为ReadOnly的方法吗?

Anyone figured out a way to mark a property as ReadOnly when doing serialisation, deserialization using Json.Net?

谢谢

推荐答案

有条件地序列化属性的一种可能性是ShouldSerialize

One possibility to conditional serialise a property is the ShouldSerialize

http://www.newtonsoft.com/json/help/html /ConditionalProperties.htm

您创建一个返回布尔值的方法，以确定您的属性是否应该序列化.该方法以ShouldSerialize开头，并以您的属性名称结尾.例如ShouldSerializeMyProperty

You create a method which returns a bool to determine if your property should be serialized or not. The Method starts with ShouldSerialize and ends with your property name. e.g. ShouldSerializeMyProperty

一个例子

public MyClass
{
    public string MyProp { get; set; }
    public string ExcludeThisProp { get; set; }
    public int MyNumber { get; set; }
    public int ExcludeIfMeetsCondition { get; set; }

    //Define should serialize options
    public bool ShouldSerializeExcludeMyProp() { return (false); } //Will always exclude
    public bool ShouldSerializeExcludeIfMeetsCondition()
    {
        if (ExcludeIfMeetsCondition > 10)
            return true;
        else if (DateTime.Now.DayOfWeek == DayOfWeek.Monday)
            return true;
        else
            return false;
    }
}

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