java21

编程导航 2025 年 AI 开发实战新项目，基于 Spring Boot 3 + Java 21 + WxJava + Spring AI 的智能公众号管理系统，整合 ​​WxJava​​ 与 ​​Spring AI​​，实现多公众号的统一管理、​​AI 智能回复和素材管理​​。完整的后端 + React 前端全栈项目，覆盖公众号服务器配置、公众号 AI 自动回复、公众号素材管理、公众号菜单栏配置、本地开发调试微信公众号接口等功能。帮助你快速掌握公众号相关功能开发，让自己的公众号更加智能。

Nexora is an enterprise-grade distributed social & professional network built with Java 21 Virtual Threads, Spring Boot 4, Apache Kafka, Neo4j graph DB & React. Deployed live on AWS EC2 with S3 & CloudFront global CDN. Empirically benchmarked to handle 100k+ concurrent users with 0% error rate.

Um GPT em nível de caractere escrito do zero em Java puro, sem bibliotecas de machine learning. Três níveis: bigrama por contagem, MLP com backpropagation manual e um Transformer com atenção causal.

System do zarządzania wizytami u weterynarza i profilami zwierząt.

Manage expenses with AI-powered voice, photo, chat, and payment notification tracking for quick and accurate bookkeeping.

Enterprise-grade Pharmacy Management System & POS built with Spring Boot 4 and Angular 21. Features FEFO inventory logic, optimistic locking, and contract-first OpenAPI architecture.

A full-stack Property Rental and Tenant Management Portal built with Angular and Spring Boot, featuring role-based access for administrators and tenants. It supports property management, tenant onboarding, lease tracking, rent payments, maintenance requests, secure authentication, and many more rental management features.

🛒 Enterprise E-Commerce Monorepo: 1 Next.js 15 App Router frontend with a live backend switcher connecting to Spring Boot (PostgreSQL), Node.js, and Go micro-backends.

Full-stack engineering analytics platform built with Spring Boot, React, and MongoDB. Syncs GitHub organization activity (commits, PRs, code reviews, CI/CD workflows) into a local database to compute velocity metrics, repository health scores, and structured AI briefings via Groq (Llama 3.3 70B).

Strongly-typed framework for composable coding-migration agents on the GitHub Copilot SDK — fleet mode, rule-scoped hooks, branch-per-agent. Includes a Java 17→21 SAP Commerce CLI.

ContractPulse — CRM Enterprise & Gestão de Contratos B2B com React 19 + TypeScript + Java 21 LTS + Spring Boot 3.3+ + PostgreSQL 17 + Flyway + MapStruct + OpenAPI

A full-stack social platform designed for book enthusiasts to explore, review, borrow, and manage books. The system sup- ports user registration with email activation, JWT-secured authentication, book borrowing and returning, rating feedback, and admin-level controls over content and users.

A minimal full-stack banking application.

VaultLedger — Enterprise Double-Entry Financial Engine & Security Platform con Java 21 LTS + Spring Security 6 + RSA-256 + Redis + PostgreSQL 17 + React 19 + Tailwind CSS v4

LogiSync Enterprise — ERP Full Stack, Event-Driven Supply Chain & Global Logistics con React 19 + Java 21 LTS + Spring Boot 3.3 + RabbitMQ + PostgreSQL 17 + Docker Compose

Real-time community-driven road hazard tracking. See potholes, accidents, and delays before you hit them.

A cloud-native, microservices-based K-Drama and Movie tracking web application built with modern technologies and deployed on Azure Container Apps.

A full-stack URL shortener built with React and Java Spring Boot. Features JWT/OAuth 2.0 authentication, custom aliases, click analytics, and Dockerized deployment.