Overview of a Spring Cloud‑Based Online Supermarket System

Introduction

A well‑designed online supermarket system built with Spring Cloud on Java, covering front‑end, back‑end, database, load balancing, and caching, and continuously being improved.

Preview

Feature Description

User Microservice

User login

User registration

User logout

Username availability check

Retrieve login status

Product Microservice

Paginated product query

Single product query

Product addition

Product modification

Common Resource Microservice

Acts as Spring Cloud Eureka module

Provides common JavaBeans, ViewObjects, and utility classes

Zuul Gateway

Spring Cloud Zuul gateway module

Automatic login feature

Image Microservice

Image upload

Captcha generation

Clear captcha cache in Redis

Shopping Cart Microservice

Cart query

Add product to cart

Delete product from cart

Modify product in cart

Package Structure

- com.supermarket.*.filter          // microservice filters
- com.supermarket.*.controller    // controller layer
- com.supermarket.*.aspect        // aspect classes
- com.supermarket.*.service       // service layer
- com.supermarket.*.dao           // DAO layer
- com.supermarket.*.exception     // custom exceptions
- com.supermarket.*.domain        // JavaBeans
- com.supermarket.*.utils         // utility classes
- com.supermarket.*.vo            // ViewObjects

Conclusion

Overall the project is solid; it still uses EL expressions, JSP, and Servlet technologies, making it a good hands‑on example for developers who want to practice building a microservice‑based e‑commerce system.

Resources

Source code: github.com/GoogleLLP/SuperMarket

Tutorial: my.oschina.net/u/4346166/blog/4748918

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