Kodvel

Simple MVC structure for java Servlet and JSP

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/learn @Rezve/Kodvel

About this skill

Quality Score

0/100

README

Kodvel

The aim of this project is to provide a simple MVC structure to organize your Servlet applications.

Features:

Controllers support multiple methods to handle multiple requests.Like Post class can have index method for showing all post, view for viewing a single post, edit for edit post form, store for saving post by POST request.
Easy route for binding URL patterns to Controller and method.

Getting Started

Prerequisites

JDK 8
NetBeans IDE 8.2 or leter

Installing

Clone the project into your machine or download as a zip.

git clone https://github.com/rezve/kodvel.git
cd kodvel

Open the project with NetBeans IDE
Run the project. A welcome page will open in your default browser.

Project Structure

  ├── Web Pages               
  │   ├── WEB-INF             
  │   │   ├── views           # define your views in this folder (JSP files)
  │   │   └── web.xml         
  │   └── resources           # static resources (css,js,image, etc)
  │
  ├── Source Packages         
  │   ├── app                 
  │   │   ├── config          # project configuration
  │   │   ├── controllers     # all the controller classes
  │   │   ├── models          # all models (Beans)
  │   │   └── routes          # register your routes here
  │   └── Kodvel              # system files
  └── ...

Quick start

Step 1: Let's start by creating a simple JSP view in view/blog folder

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix = "c" uri = "http://java.sun.com/jsp/jstl/core" %>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Blog</title>
    </head>
    <body>
        <h1>List of Posts</h1>
     </body>
</html>

Setp 2: Now, Create a controller class inside app/controllers folder. This will serve our views.

public class Blog extends Controller{
     public void index(HttpServletRequest req, HttpServletResponse res) {
         req.setAttribute("posts", posts);
         view("blog/posts", req, res);
     }
     
   public void create(HttpServletRequest req, HttpServletResponse res) {
       view("blog/create", req, res);
   }
     ...
}

NOTE: All methods (those are used for handling user request) inside a controller must have this two argument.

We have completed our first controller. Now register it to receive user request.

Step 3: Define a route in app/routes/web.java

public void registerRouter() {   
	...
	Router.get("/blog", new Blog(), "index");
        Router.get("/blog/create", new Blog(), "create");
}

here we registered our index method for handling all the request for /blog and create method for /blog/create url.

Done! Lets visit http://localhost:8080/kodvel/blog

You will see your views in the browser.

List of Posts

So here is the flow:

Create your views (JSP) with html/css design and data passed from the controller.
Create a model for holding data.
Create a controller to fetch data from DB and process other logic and pass the data to view.

Documentation

Contributing

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

TODO LSIT

Utility function for base URL
Form validation
Database support
Simple database helper method
Completing this Documentation.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

Authors

Md. Rezve Hasan - Initial work - github

See also the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE.md file for details

Acknowledgments

Name and routing style of this project inspired by laravel

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