This is an example project. This project contains ReactJs on the front-end and Spring Boot with Spring Security and JWT authentication on the back-end. The database is PostgreSQL.

The following queries need to be executed before testing the application:

INSERT INTO roles (name) VALUES ('ROLE_USER');
INSERT INTO roles (name) VALUES ('ROLE_ADMIN');
INSERT INTO users (id, email, password, username) VALUES (1, 'admin@admin.com', '$2a$10$vOGvoOOaTtUZYoZTTl..IOF01JxNJJQ19DdtM6T41kV3gfkTn3rvi', 'admin');
INSERT INTO user_roles (user_id, role_id) VALUES ((SELECT id FROM users WHERE username='admin'), (SELECT id FROM roles WHERE name='ROLE_ADMIN'));
INSERT INTO user_roles (user_id, role_id) VALUES ((SELECT id FROM users WHERE username='admin'), (SELECT id FROM roles WHERE name='ROLE_USER'));
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (1, (SELECT id FROM users WHERE username='admin'), 20, '2020-04-01');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (2, (SELECT id FROM users WHERE username='admin'), 45, '2020-04-02');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (3, (SELECT id FROM users WHERE username='admin'), 62, '2020-04-03');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (4, (SELECT id FROM users WHERE username='admin'), 73, '2020-04-04');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (5, (SELECT id FROM users WHERE username='admin'), 61, '2020-04-05');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (6, (SELECT id FROM users WHERE username='admin'), 41, '2020-04-06');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (7, (SELECT id FROM users WHERE username='admin'), 55, '2020-04-07');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (8, (SELECT id FROM users WHERE username='admin'), 46, '2020-04-08');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (9, (SELECT id FROM users WHERE username='admin'), 97, '2020-04-09');
INSERT INTO user_statistics (id, user_id, number_of_logins_per_day, stat_date) VALUES (10, (SELECT id FROM users WHERE username='admin'), 88, '2020-04-10');
SELECT setval('roles_id_seq', (SELECT MAX(id) FROM roles)+1);
SELECT setval('users_id_seq', (SELECT MAX(id) FROM users)+1);
SELECT setval('user_statistics_id_seq', (SELECT MAX(id) FROM user_statistics)+1);

After this. The there will be one user with admin rights. The username is 'admin' and the password is 'asdf1234'.