Kotlin + OAuth2 + JWT + SpringBoot2 + JPA

I share example how to integrate Kotlin + OAuth2 + Spring Rest API + SpringBoot 2  + JWT +JPA.

Technologies used:

1. Spring Boot 2.2.6.RELEASE
2. Maven
3. OAuth2
4. Intellij IDEA Community
5. Spring Tools Suite (STS) 4
6. MySql
7. Postman

Code on GitHub:

https://github.com/HenryXiloj/Kotlin-OAuth2-SpringBoot2-JPA

Steps:

Create table on MySql:

CREATE TABLE `users` 
( 
 `id`       INT(11) NOT NULL auto_increment, 
 `username` VARCHAR(255) NOT NULL, 
 `password` VARCHAR(255) NOT NULL, 
 `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP() on 
  UPDATE CURRENT_TIMESTAMP(), 
  PRIMARY KEY (`id`) 
)


I saved the password field with Security - Password Enconding (org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder)

INSERT INTO users 
VALUES      (1, 
             'henry', 
             '$2a$04$I9Q2sDc4QGGg5WNTLmsz0.fvGv3OjoZyj81PrSFyGOqMphqfS2qKu'); 

IntelliJ:  File -> open --> choose folder backend


Change the configuration on file application.yml




Run project from IntelliJ :

View -> Tool Windows -> Maven -> Execute Maven Goal-> mvn install

Run project backend.jar with java -jar backend.jar,  in the file configuration you can define context for application, i define context --> backend and port 9000.


Credencials for test:

Test: Get token

Test: Error when you try to access ws, you need to add access_token

Add access_token -> url?access_token=your_token.

References:
https://www.devglan.com/spring-security/spring-boot-security-oauth2-example