您可以使用anyOf关键字和definitions/$ref来避免重复。

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "assetMetadata": {
      "anyOf": [
        { "$ref": "#/definitions/assetMetaData" },
        {
          "type": "array",
          "description": "...",
          "items": { "$ref": "#/definitions/assetMetaData" }
        }
      ]
    }
  },
  "definitions": {
    "assetMetadata": {
      "type": "object",
      "additionalProperties": false,
      "properties": { ... }
    }
  }
}

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接受的答案在JSON模式验证器中对我不起作用。
阵列未被接受。
我做了一些调整和更改，使其工作，这里是一个示例模式：

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "anyOf": [
    {
      "$ref": "#/definitions/commentObject"
    },
    {
      "type": "array",
      "description": "Array of Comment objects",
      "items": {
        "$ref": "#/definitions/commentObject"
      }
    }
  ],
  "definitions": {
    "commentObject": {
      "properties": {
        "number": {
          "type": "integer",
          "minLength": 0,
          "maxLength": 256
        },
        "comment": {
          "type": "string",
          "minLength": 0,
          "maxLength": 256
        }
      },
      "required": [
        "number",
        "comment"
      ],
      "type": "object"
    }
  }
}

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用于测试验证的对象：

{
  "number": 47,
  "comment": "This is a comment",
}

型
用于测试验证的对象数组：

[
  {
    "number": 47,
    "comment": "This is a comment"
  },
  {
    "number": 11,
    "comment": "This is other comment"
  }
]

型
JSON Schema Validator for object
JSON Schema Validator for array (of the same objects)的