Examarbetet Hongwei Han

This project aims to generate a demo by which users can check hotel information and book hotel.

Prerequisites

Alibaba Nacos

docker run --name nacos-quick -e MODE=standalone -p 8848:8848 -p 9848:9848 -d nacos/nacos-server:v2.2.0

Mysql

docker compose -f docker-compose-mariadb.yml up

Elastic search

docker compose -f docker-compose-elasticsearch.yml up

Micoservices

User Information Service

The program uses MyBatis to create, select, update, and delete user information in the MySQL table tb_userInfo. MyBatis automatically converts snake_case to camelCase. Data from the repository is updated in the service section and is exposed at the endpoint /user.

Order Information Service

The program applies similar methods in the order information service. When users review order information, the program retrieves user information through the OpenFeign service.

Elasticsearch Service

The program uses spring-boot-starter-data-elasticsearch to connect to Elasticsearch. It applies JPA to select hotel information.

Authentication Service

Based on the user information database, the program generates and decodes tokens. The endpoint /auth/login generates tokens, while the endpoint /test/protected ensures the service functions correctly. Additionally, the program deciphers passwords using the JWTProvider method.

Gateway Service

Users can access different services through the same address and port. The gateway service also handles load balancing. The endpoint /auth/login is directly exposed so users can visit it without a token. For other endpoints, users need to provide a token.

OpenFeign Service

The program uses spring-cloud-starter-openfeign to configure OpenFeign. With OpenFeign, the user information service endpoint is internally exposed. Meanwhile, feign-httpclient delivers the endpoint to the order information service. This enables the order information service to display user information.