PassJava MiniApp: Cloud Development and Advanced Versions for Interview Question Practice

1. Origin

The PassJava open‑source project is an interview‑question platform whose backend uses Spring Cloud microservices and offers a WeChat mini‑program for quick question browsing and practice.

2. Cloud Development Version

2.1 Mini‑program Overview

The cloud‑development mini‑program leverages WeChat Cloud services, allowing developers to build without managing servers, using cloud database, storage, cloud functions, and cloud hosting.

2.1.1 Advantages

No server setup required; use platform capabilities directly.

No need to manage certificates or keys; native WeChat API ensures security.

Shared environment supports multiple mini‑programs, public accounts, and web pages.

Supports any language/framework; containerized deployment to cloud.

Pay‑as‑you‑go scaling based on traffic.

2.1.2 Features

Cloud Database : Document‑type, reliable, callable from mini‑programs and cloud functions.

Storage : Cloud file storage with CDN acceleration, direct front‑end upload/download.

Cloud Functions : Server‑side code execution with built‑in authentication.

Cloud Hosting : Container hosting for any framework/language, always running.

2.1.3 Drawbacks

Best suited for personal projects.

Traffic‑based billing may require purchase for high usage.

Cannot use external middleware such as Redis or RabbitMQ.

Database and storage are limited to Tencent services (no MySQL, Alibaba Cloud, etc.).

2.2 Mini‑program Usage

2.2.1 Question Bank

The question bank displays categories (12 types) and lists, e.g., Spring interview questions, with details loaded from markdown files stored in cloud storage.

2.2.2 Uploading Questions

Upload markdown files (question + answer) to cloud storage, then insert corresponding records into the cloud database. Example record:

{
  "_id": "27a98c6c-0477-4edb-8ef3-e35f0501b31c",
  "question": "1.JAVA 异常分类及处理？",
  "answer": "cloud://test-0jlva.7465-test-0jlva-1254012214/markdown/02_JavaBasic/一、JAVA 异常分类及处理.md",
  "number": "1",
  "subTitle": "每天进步一点点",
  "type": "javaBasic",
  "level": "1"
}

Fields include question, answer, number, subTitle, type (e.g., javaBasic, jvm, spring), and level.

2.3 Mini‑program Principle

The flow: call custom cloud functions to fetch question lists and markdown paths, download files via system cloud function, save locally, read into cache, convert markdown to renderable elements with towxml , and add image preview events.

3. Advanced Version

The advanced version replaces cloud services with a Spring Cloud microservice backend and MySQL database; the REST API is partially integrated with the mini‑program.

3.1 Prerequisites

Local microservices (passjava‑gateway, passjava‑question, renren) running.

MySQL database and tables created (5 modules, 7 tables).

Nacos service discovery configured.

Passjava‑portal console accessible at http://localhost:8001/ .

Question management functions working (create types and questions).

4. Open‑source Repository

All code (backend, frontend, mini‑program) is hosted on GitHub and Gitee:

Github : https://github.com/Jackson0714/PassJava-Platform Gitee : https://gitee.com/jayh2018/PassJava-Platform Tutorial : www.passjava.cn

Additional resources include the WeChat Cloud Getting Started guide and the PassJava website.