Gump0422 / spring-boot-jwt

Spring security using jwt https://jwt.io/

Getting Started

This is a sample token authentication project using JWT. This project show how to manage both the roles and privileges/permissions of the user.

Feature

• Swagger2
• jjwt
• redis
• Spring AOP(for logging) and also using ApplicationListener for event logging.

Prerequisites

• redis

Installing

Since we are using redis to store token make sure to run the redis server. For windows you can download it here

Configuration

You can configure the jpa hibernate dll, by default it is set to "create-drop"

spring:
  jpa:
    hibernate:
      ddl-auto: create-drop

Testing

• You can use the swagger-ui to test the api or postman. Much better to use postman so you can login using the api "/login" which is not displayed in the swagger-ui.
• You can add first a user using this endpoint:

http://localhost:8080/users

• Then you can add the user role through this endpoint:

http://localhost:8080/users/{userId}/roles

• Then you can check the h2 db

http://localhost:8080/h2/

• To test like adding rules through swagger api

http://localhost:8080/swagger-ui.html
http://localhost:8080/v2/api-docs

• After that you can proceed to authentication and authorization process.

How it Works

• For Authentication it use the spring UsernamePasswordAuthenticationFilter class which will intercept the request for login POST ("/login). See: JwtAuthenticationFilter.java
• In every login it will generate a SecretKey using KeyGenerator Advance Standard Encryption(AES) then use it to sign the token.

public SecretKey generateKey() throws NoSuchAlgorithmException {
     return KeyGenerator.getInstance("AES").generateKey();
}

• Token, SecretKey and Claims are stored in redis. See: JwtModel.java
• For Authorization it use also the spring BasicAuthenticationFilter class to filter request. See: JwtAuthorizationFilter.java. This checks the token if it exists in the redis, then validates it using the SecretKey which is save also in the redis.

Built With

• Spring Boot
• Gradle

Jwt Library

For more information regarding with the jwt library being used you can check it here.