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CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is a Spring Boot course management system (`youfool-course`) built with the youfool-framework-springboot3. It's a training course platform that handles course management, user authentication, and related functionality.
+
+## Technology Stack
+
+- **Java 21** - Latest LTS Java version
+- **Spring Boot 3.4.5** - Main framework
+- **PostgreSQL** - Primary database
+- **MyBatis-Plus** - ORM with dynamic datasource support
+- **Sa-Token** - Authentication and authorization
+- **Thymeleaf** - Template engine
+- **Knife4j** - API documentation (Swagger)
+- **Druid** - Database connection pool
+- **Lombok** - Code generation
+
+## Development Commands
+
+### Build and Run
+```bash
+# Compile the project
+mvn compile
+
+# Run tests
+mvn test
+
+# Package the application
+mvn package
+
+# Run the application (development)
+mvn spring-boot:run
+
+# Run with specific profile
+mvn spring-boot:run -Dspring-boot.run.profiles=dev
+```
+
+### Code Quality
+```bash
+# Run checkstyle validation
+mvn checkstyle:check
+
+# Skip tests during build
+mvn package -DskipTests=true
+```
+
+### Database Operations
+The project uses dynamic datasources with `@DSTransactional` instead of `@Transactional` for transaction management.
+
+## Architecture
+
+### Package Structure
+- `com.chinaweal.youfool.course` - Main application package
+- `controller/` - REST API controllers and web controllers
+- `service/` - Business logic layer with service interfaces and implementations
+- `mapper/` - MyBatis data access layer
+- `entity/` - JPA/MyBatis entity classes
+- `config/` - Configuration classes including datasource setup
+- `common/` - Shared utilities and constants
+- `dev/` - Development tools including code generators
+
+### Key Components
+
+#### Data Source Configuration
+- Uses dynamic datasource from `苞米豆` (baomidou)
+- Primary datasource: `master`
+- Framework datasource: `youfool` (for restLog storage)
+- Configuration in `PrjDataSource.java` and `application.yml`
+
+#### Authentication System
+- Sa-Token based authentication with JWT support
+- OAuth2 integration with Gitea
+- Session management with custom `UserBaseExtend` entity
+- Default admin credentials: username `admin`, password `123456`
+
+#### Entity Relationships
+Core entities:
+- `Course` - Main course entity with ID, date, name, description
+- `CourseVideo` - Course video attachments
+- `CourseAttachment` - General course attachments
+- `CourseComment` - Course discussion/comments
+- `SysUser` - System user management
+
+#### Code Generation
+The project includes code generation tools:
+- `TableCodeGen` - Generates entity, mapper, service, controller from database tables
+- `ConstantCodeGen` - Generates constants
+- `EnumsCodeGen` - Generates enums
+- Configuration in `properties/codeGenerator.properties`
+
+## Application URLs
+
+When running locally:
+- **Application**: http://localhost:8080/course
+- **API Documentation**: http://localhost:8080/course/doc.html (admin/123456)
+- **Druid Monitor**: http://localhost:8080/course/druid (admin/123456)
+- **CMS Backend**: http://localhost:8080/course/cms (admin/123456)
+
+## Configuration Files
+
+- `application.yml` - Main configuration with datasource, security, and application settings
+- `application-dev.yml` - Development environment configuration
+- `application-prod.yml` - Production environment configuration
+- `checkstyle-v1.0.xml` - Code style rules
+
+## Database Transaction Management
+
+**Important**: When working with transactions, always use `@DSTransactional` instead of `@Transactional` due to the dynamic datasource configuration.
+
+## Security Configuration
+
+- JWT tokens with configurable TTL (default 125 minutes)
+- SM3 encryption for password storage
+- File upload size limit: 100MB
+- CORS and security filter configurations in `SpringMvcConfig`
+
+## Development Notes
+
+- The project uses Chinese comments and documentation
+- Default context path is `/course`
+- Logging directory: `../logs` (configurable via `LOG_PATH` environment variable)
+- Caching is enabled via `@EnableCaching`
+- The application extends `SpringBootServletInitializer` for WAR deployment