用 Manatee.Json 替换 System.Text.Json 以在 .NET Core 3 中进行序列化 [英] Replacing System.Text.Json with Manatee.Json for serialization in .NET Core 3

问题描述

背景
我想从我的 .NET Core 3 应用程序中提供一些 JsonSchema，以及序列化为 JSON 的其他对象.由于Manatee.Json 经常更新并且对JsonSchema 提供了很好的支持，所以它们是我的首选.同时，.NET Core 3 为返回对象提供了出色的支持，可以将它们转换为 JSON 文档.

Background
I want to provide some JsonSchema from my .NET Core 3 application, as well as other objects serialized into JSON. Since Manatee.Json is frequently updated and provides good support for JsonSchema, they are my preferred choice. At the same time, .NET Core 3 provides excellent support for returning objects with magic that transform them into JSON documents.

示例:

public ActionResult<MyFancyClass> MyFancyAction()
{
    return new MyFancyClass {
        Property1 = "property 1 content",
        Property2 = "property 2 content",
    };
}

输出:

{
    "Property1": "property 1 content",
    "Property2": "property 2 content"
}

问题
.NET Core 3 内部支持 JSON，其 System.Text.Json 在前面的示例中使用.如果我尝试序列化 Manatee.Json.Schema.JsonSchema，它的内部结构被序列化，而不是 json 模式本身.

Problem
.NET Core 3 has internal support for JSON with its System.Text.Json which is used in the previous example. If I try to serialize Manatee.Json.Schema.JsonSchema, its internal structure are serialized, not the json schema itself.

示例:

public ActionResult<MyFancyClass2> MyFancyAction2()
{
    return new MyFancyClass2 {
        Property1 = "property 1 content",
        Property1Schema = new JsonSchema()
            .Type(JsonSchemaType.String)
    };
}

输出:

{
  "Property1": "property 1 content",
  "Property1Schema": [{
    "name":"type",
    "supportedVersions":15,
    "validationSequence":1,
    "vocabulary": {
      "id":"https://json-schema.org/draft/2019-09/vocab/validation",
      "metaSchemaId":"https://json-schema.org/draft/2019-09/meta/validation"
    }
  }]
}

我希望:

{
  "Property1": "property 1 content",
  "Property1Schema": {
    "type": "string",
  }
}

Manatee.Json.JsonValue 也有内部结构冲突，其中 System.Text.Json.JsonSerializer 无法正确访问内部获取方法，例如我得到这个异常消息:

Manatee.Json.JsonValue also have a conflicting inner structure, where System.Text.Json.JsonSerializer fails to access internal get methods correctly and I get for instance this exception message:

Cannot access value of type Object as type Boolean.

发现
Manatee.Json.Schema.JsonSchema 有一个 .ToJson() 方法，可用于获取正确的 json 模式作为 JsonValue，但是然后我得到了我刚刚提到的序列化 Manatee.Json.JsonValue 的问题.

Discovery
Manatee.Json.Schema.JsonSchema has a .ToJson() method that can be used to get the correct json schema as a JsonValue, but then I get the problem I just mentioned with serializing Manatee.Json.JsonValue.

问题
有谁知道将 .NET Core 3 中的默认序列化从使用 System.Text.Json 更改为使用 Manatee.Json 的方法吗?

Question
Does anyone know a way to change default serialization in .NET Core 3 from using System.Text.Json to using Manatee.Json?

侧标
另一种方法是启用 System.Text.Json 以序列化 Manatee.Json 结构(查看 这个问题).

Sidemark
Another way forward is to enable System.Text.Json to serialize Manatee.Json structures (take a look at this question).

推荐答案

你很幸运！我只是将架构后继者发布到 Manatee.Json:JsonSchema.Net！它完全支持草案 6 到 2019-09，100% 基于 System.Text.Json，而且速度快得离谱！

You're in luck! I just release the schema-successor to Manatee.Json: JsonSchema.Net! It has full support of drafts 6 through 2019-09, is based 100% in System.Text.Json, and it's ridiculously fast!

希望这会有所帮助.

(不知道为什么我没有收到关于 Manatee.Json 标签的电子邮件.抱歉花了这么长时间才找到这个.)

(Don't know why I didn't get emailed for the Manatee.Json tag. Sorry it took so long to find this.)

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