C# 在使用anyOf属性下的多个引用解析json模式时，输出中只返回一个引用（最后一个）

我有一个有效的json模式，如下所示

 {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "$id": "abcd",
      "title": "test schema",
      "description": "............",
      "type": "object",
      "properties": {
         "a": {
           ...........
           ...........
          },
         "b": {
          .........
          ........
          .........
          },
         "c": {
          ...........
          ..........
          },
         "d": {
          ...........
          ..........
          }
       },
    "anyOf": [
        {
        "type": "object",
              "$ref": "#/properties/a",
              "$ref": "#/properties/b"
        },
            {
             "type": "object",
              "$ref": "#/properties/c",
              "$ref": "#/properties/d"
            }
        ]

    }

My Json Schema
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "abcd",
  "title": "test schema",
  "description": "............",
  "type": "object",
  "properties": {
     "a": {
       ...........
       ...........
      },
     "b": {
      .........
      ........
      .........
      },
     "c": {
      ...........
      ..........
      },
     "d": {
      ...........
      ..........
      }
   },
"anyOf": [
    {
          "$ref": "#/properties/b"
    },
        {
          "$ref": "#/properties/d"
        }
    ]

}

I'm wondering why I'm getting only the last reference under the anyOf property

On parsing shouldn't the output be the same as that in the file?
Am I missing something?
My desired output under anyOf is 

"anyOf": [
    {
    "type": "object",
          "$ref": "#/properties/a",
          "$ref": "#/properties/b"
    },
        {
         "type": "object",
          "$ref": "#/properties/c",
          "$ref": "#/properties/d"
        }
    ]

上面的模式存储在一个文件中，我正在加载它进行解析，如下所示

JSchema schema =
    JSchema.Parse(File.ReadAllText(@"D:\Backups\testschema.json"));

因此，当我查看schema的输出时，它如下所示

 {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "$id": "abcd",
      "title": "test schema",
      "description": "............",
      "type": "object",
      "properties": {
         "a": {
           ...........
           ...........
          },
         "b": {
          .........
          ........
          .........
          },
         "c": {
          ...........
          ..........
          },
         "d": {
          ...........
          ..........
          }
       },
    "anyOf": [
        {
        "type": "object",
              "$ref": "#/properties/a",
              "$ref": "#/properties/b"
        },
            {
             "type": "object",
              "$ref": "#/properties/c",
              "$ref": "#/properties/d"
            }
        ]

    }

My Json Schema
{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "abcd",
  "title": "test schema",
  "description": "............",
  "type": "object",
  "properties": {
     "a": {
       ...........
       ...........
      },
     "b": {
      .........
      ........
      .........
      },
     "c": {
      ...........
      ..........
      },
     "d": {
      ...........
      ..........
      }
   },
"anyOf": [
    {
          "$ref": "#/properties/b"
    },
        {
          "$ref": "#/properties/d"
        }
    ]

}

I'm wondering why I'm getting only the last reference under the anyOf property

On parsing shouldn't the output be the same as that in the file?
Am I missing something?
My desired output under anyOf is 

"anyOf": [
    {
    "type": "object",
          "$ref": "#/properties/a",
          "$ref": "#/properties/b"
    },
        {
         "type": "object",
          "$ref": "#/properties/c",
          "$ref": "#/properties/d"
        }
    ]

---

关于如何实现所需输出的想法？

在Json中，每个对象只能有一个特定的键一次。因此，在一个对象中，只能有一个名为

$ref

的键。您在上面发布的Json无效；它的功能取决于实现——理想情况下，它应该抛出一个错误，但在这种情况下，第二个错误似乎覆盖了第一个错误

请注意，对于

$ref

，其他属性将被忽略，因此除了

$ref

之外，使用另一个关键字，如

type

，没有什么意义

我不完全确定，但看起来你想要实现的是，要么属性“a”和“b”应该存在，要么属性“c”和“d”应该存在

您可以通过将

anyOf

子句替换为：

"anyOf": [
    {
        "required": ["a", "b"]
    },
    {
        "required": ["c", "d"]
    }
]

---

完美的谢谢@Erwin Bolwidt，这正是我想要的