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Spring Webflux JWT Security Demo

The motivation for this demo, is just because it is very difficult to find a complete implementation of spring webflux + security + jwt + r2db all in one functional implementation, all that you can find in internet are incomplete, not functional or very older examples, I didn't find any complete example like this from official spring examples neither. That's why I did it and wanted to share it to anybody that is needing it.

Any improvement, fix, contribution are welcome.

Happy codding!!

What this demo has?

  • Spring webflux
  • Spring security implemented with JWT + validation layer
  • User register demo endpoint
  • User authentication endpoint
  • Model to dto mapping (using mapstruct)
  • User R2db with Postgresql repository impl
  • User validation in spring security layer, according to the user record in db

Data base setup

  • If you don't have installed Postgresql locally you can just run it with docker
docker-compose -f src/main/docker/docker-compose.yml up -d

Create db and Users table

just execute the sql script located in src/resources/schema/database.sql or copy teh following sentences:

CREATE DATABASE "webflux-security";

CREATE TABLE users
(
    id         SERIAL PRIMARY KEY,
    username   VARCHAR(64),
    password   VARCHAR(64),
    roles      TEXT[],
    first_name VARCHAR(64),
    last_name  VARCHAR(64),
    enabled    BOOLEAN,
    created_at TIMESTAMP,
    updated_at TIMESTAMP
);

Create demo user

curl http://localhost:9000/public/demo-user \
  -X POST \
  -H 'Content-Type: application/json' \
  -d '{
    "username": "admin",
    "password": "admin",
    "first_name": "John",
    "last_name": "Doe" 
  }'

Authenticate and get a valid JWT token

curl http://localhost:9000/login \
  -X POST \
  -H 'Content-Type: application/json' \
  -d '{
    "username": "admin",
    "password": "admin"
  }' | json_pp

API Response

{
   "issuedAt" : "2021-04-09T18:48:04.052+00:00",
   "userId" : 1,
   "expiresAt" : "2021-04-10T02:48:04.052+00:00",
   "token" : "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIiwicm9sZSI6WyJST0xFX1VTRVIiXSwiaXNzIjoiYWRtaW4iLCJleHAiOjE2MTgwMjI4ODQsImlhdCI6MTYxNzk5NDA4NCwianRpIjoiODUzNTAwNDUtYjNjNy00MTA3LWIyZjUtOGEwNDUyNjVmZWM5In0.okhxY7BsK3S3ABNMJlm1WhGdjssy676d6bNkZ3ybN34"
}

Make an authenticated request

(!) Use jwt token obtained previously

curl http://localhost:9000/user \
  -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIiwicm9sZSI6WyJST0xFX1VTRVIiXSwiaXNzIjoiYWRtaW4iLCJleHAiOjE2MTgwMjI4ODQsImlhdCI6MTYxNzk5NDA4NCwianRpIjoiODUzNTAwNDUtYjNjNy00MTA3LWIyZjUtOGEwNDUyNjVmZWM5In0.okhxY7BsK3S3ABNMJlm1WhGdjssy676d6bNkZ3ybN34' | json_pp

API Response

{
   "enabled" : true,
   "id" : 1,
   "first_name" : "John",
   "username" : "admin",
   "last_name" : "Doe"
}

Last notes

  • The default JWT token expiration is 28800 seconds = 8 hours, you can configure this and other jwt params in src/resources/application.yml
  • If you update the user record in db, updating the enabled column to false, and try to fetch GET /user once again api will return an error 401

License

MIT