Search code examples
javajson

Generate sample Json output from Json Schema

I want to know whether there is a method in which I can generate sample json output based on a json schema input. For example of the following input:

{
  "title": "Example Schema",
  "type": "object",
  "properties": {
    "firstName": {
      "type": "string"
    },
    "lastName": {
      "type": "string"
    },
    "age": {
      "description": "Age in years",
      "type": "integer",
      "minimum": 0
    }
  },
  "required": ["firstName", "lastName"]
}

Output:

{
  "firstName": "RandomFirstName",
  "lastName": "RandomLastName"
}

I have a large json schema with plenty of validations, so to generate a sample valid json, I could either create one manually using either Java or just a type it into a file. Is there a better way available?

Solution

  • You can try the JSON Schema Faker. It will take a schema and generate/output a JSON object that will validate against the schema.

    Code available on githubcom