nodejs-嵌套JSON对象的JSON验证程序

ajv 使用 JSON schema 标准,它能够处理嵌套的json。JSON模式是OpenAPI标准的一部分( official docs 大摇大摆地)。

const Ajv = require("ajv");
const ajv = new Ajv();

const input = {
    "sectionId": 1,
    "sub_sections": [
        {
            "subSectionId": 1,
            "questions": [
                {
                    "questionId": 1,
                    "answerId": 4
                },
                {
                    "questionId": 2,
                    "answerId": 4
                },
                {
                    "questionId": 3,
                    "answerId": 4
                }
            ]
        }
    ]
};

const schema = {
    type: 'object',
    properties: {
        sectionId: {type: 'integer'},
        sub_sections: {
            type: 'array',
            items: {
                type: 'object',
                properties: {
                    subSectionId: {type: 'integer'},
                    questions: {
                        type: 'array',
                        items: {
                            type: 'object',
                            properties: {
                                questionId: {type: 'integer'},
                                answerId:  {type: 'integer'}
                            },
                            required: ['questionId', 'answerId'],
                            additionalProperties: false
                        }
                    }
                },
                required: ['subSectionId', 'questions'],
                additionalProperties: false
            }
        }
    },
    required: ['sectionId', 'sub_sections'],
    additionalProperties: false
};

const validate = ajv.compile(schema);
const valid = validate(input);
console.log(valid); // prints true