Leave Management System

A Spring Boot-based leave management application with user authentication, employee management, and leave request workflows.

Overview

This project provides a simple leave management system built with Spring Boot, Spring Security, Spring Data JPA, and JSP views. It supports user signup/login, employee data handling, leave requests, and administrative leave approval.

Preview

User Dashboard

Admin Dashboard

Key Features

• User authentication and registration
• Employee profile management
• Submit and track leave requests
• Leave approval workflow for admins
• JSP-based views for the front-end
• MySQL persistence with Spring Data JPA

Tech Stack

• Java 21
• Spring Boot 4
• Spring Security
• Spring Data JPA
• Maven
• MySQL
• JSP / JSTL
• Tomcat embedded Jasper
• Lombok

Project Structure

• src/main/java/com/example/leavemanagement
  • config - security configuration
  • controller - web controllers for auth, employee, leave, and view routing
  • dto - data transfer objects for login and leave requests
  • model - domain entities such as User, Employee, Leave, Role, LeaveStatus
  • repository - JPA repositories
  • service - business logic for authentication, employee, and leave management
• src/main/resources/templates - JSP templates for login, signup, dashboard, leave history, and application pages

Prerequisites

• Java 21 SDK
• Maven 3.8+
• MySQL database

Database Setup

1. Create a MySQL database.
2. Update src/main/resources/application.properties with your MySQL username,password and database name.

Running the Application

From the project root:

./mvnw spring-boot:run

On Windows:

.
\mvnw.cmd spring-boot:run

Then open:

http://localhost:8080/login-page

Usage

• Access the login page and sign in with existing credentials.
• Use the signup page to create a new account.
• Employees can submit leave requests and view request history.
• Admin users can review and approve or reject leave requests.

Notes

• The current configuration uses spring.jpa.hibernate.ddl-auto=update to automatically manage schema updates.
• Ensure your MySQL server is running before starting the application.