nodejs swagger api-doc 구현하기

swagger-ui-express 설치하기

npm i swagger-ui-express

package.json에 swagger-ui-express 추가하기

"swagger-ui-express": "latest" // or desired version

swagger js-doc 설치하기

기존에 있던 js 파일에서 api를 따오기 위해 swagger jsdoc을 설치한다.

npm install swagger-jsdoc --save

swagger-jsdoc 설정

var swaggerJSDoc = require('swagger-jsdoc');

var options = {
  swaggerDefinition: {
    info: {
      title: 'Hello World', // Title (required)
      version: '1.0.0', // Version (required)
    },
  },
  apis: ['./routes.js'], // Path to the API docs
};

// Initialize swagger-jsdoc -> returns validated swagger spec in json format
var swaggerSpec = swaggerJSDoc(options);

app.js 세팅하기

const express = require('express');
const app = express();
const swaggerUi = require('swagger-ui-express');
const swaggerSpec = swaggerJSDoc(options)

app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec));

document the api

/**
 * @swagger
 * /login:
 *   post:
 *     description: Login to the application
 *     produces:
 *       - application/json
 *     parameters:
 *       - name: username
 *         description: Username to use for login.
 *         in: formData
 *         required: true
 *         type: string
 *       - name: password
 *         description: User's password.
 *         in: formData
 *         required: true
 *         type: string
 *     responses:
 *       200:
 *         description: login
 */
app.post('/login', function(req, res) {
  res.json(req.body);
});

Model Definition을 통한 재사용

/**
 * @swagger
 * definitions:
 *   NewUser:
 *     type: object
 *     required:
 *       - username
 *       - password
 *     properties:
 *       username:
 *         type: string
 *       password:
 *         type: string
 *         format: password
 *   User:
 *     allOf:
 *       - $ref: '#/definitions/NewUser'
 *       - required:
 *         - id
 *       - properties:
 *         id:
 *           type: integer
 *           format: int64
 */

/**
   * @swagger
   * /users:
   *   get:
   *     description: Returns users
   *     produces:
   *      - application/json
   *     responses:
   *       200:
   *         description: users
   *         schema:
   *           type: array
   *           items:
   *             $ref: '#/definitions/User'
   */
  app.get('/users', function(req, res) {
    res.json([ {
      id: 1,
      username: 'jsmith',
    }, {1
      id: 2,
      username: 'jdoe',
    } ]);
  });

  /**
   * @swagger
   * /users:
   *   post:
   *     description: Returns users
   *     produces:
   *       - application/json
   *     parameters:
   *       - name: user
   *         description: User object
   *         in:  body
   *         required: true
   *         type: string
   *         schema:
   *           $ref: '#/definitions/NewUser'
   *     responses:
   *       200:
   *         description: users
   *         schema:
   *           $ref: '#/definitions/User'
   */
  app.post('/users', function(req, res) {
    // Generate ID
    req.body.id = Math.floor(Math.random() * 100) * 1
    res.json(req.body);
  });

swagger-ui-express 공식 문서
swagger-jsdoc 공식 문서