How to create a Maven project in eclipse IDE

Maven is a build and project management tool, using this tool we can automate build process steps in java project development. Maven creates a project in standard way; it contains a 300+ rules and requirements.

In this example, explaining how to do a hello world Project by using eclipse IDE and Maven

If you are new for Maven and eclipse IDE please check my previous posts.

Creating Maven project

Click on File menu in eclipse IDE, under File menu -> new -> Maven Project, find more on below Screen.

Selecting on Maven Project, we will get a popup with name “New Maven Project”

Here click on “create a sample project” check box like and click on Next button.

In this tab, IDE will ask few information about Project in Maven terminology

As per maven, Artifact means information about the Projec.

Group id is a root package of project

Artifact Id is a name of the project

Version is a identification of the project release

Packaging is a type of the Project (jar is a Standalone project in java, war is a Web Application in Java).

As of now, ignore a Parent Project information, we will discourse this thing in feature posts.

As per above discussion, filling detail like below screen

After filling required details, Click on Finish button, Maven will create a project like below structure

Here, As per Maven standards,

1. Create all Java file in src/main/java directory.

2. Create all resource files like .properties, .xml etc.. in src/main/resources directory.

3. Create all the testing files like Junit file in src/test/java directory.

4. Create all the testing resources like JUnit related .properties files and .xml files in src/test/resources

5. pom.xml file for configuring or adding dependencies (Jar files) into project.

Note: After creation of Maven project with eclipse IDE, WEB-INF folder and web.xml file is available automatically in Old version of Maven plug-in, but in new version of Maven plug-in WEB-INF folder and web.xml file is not available, because now a days, new projects deployment is developing with annotations.

If you are developing project with configuration files like web.xml file, then you need to create a WEB-INF folder and web.xml file manually in webapp directory as per Sun microsystem standards.

In this example I am developing project with web.xml, and am creating structure, follow the below steps

For creating WEB-INF folder:

Right click on webapp folder -> new -> Folder

For creating web.xml file:

Right click on WEB-INF folder -> new -> other -> search for xml file and select XML file and click on Next button, give file name as web.xml. Click on Finish button.

Creating Servlet Class in project:

Right click on src/main/java -> new -> Class (selecting on Class option, eclipse will ask information about Class name and Package, so fill with required details and click on Finish button, as per below example MainServlet.java file is available in src/main/java)

Creating jsp in project:

Right click on WEB-INF folder -> new -> other -> in Wizards search, search for “jsp” (In Web package jsp file option is available) and select JSP file option and click on Next button, here eclipse will ask for jsp file name, enter jsp file name and click on Finish button. In the below example I have given jsp file name is welcome-gurugubellitech.jsp file name

Project structure after creation of required files:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
 version="3.0">
 <servlet>
  <servlet-name>GurugubelliTech</servlet-name>
  <servlet-class>com.gurugubellitech.MainServlet</servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>GurugubelliTech</servlet-name>
  <url-pattern>/gurugubelliTech</url-pattern>
 </servlet-mapping>
</web-app>

package com.gurugubellitech;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MainServlet extends HttpServlet{

 /**
  * 
  */
 private static final long serialVersionUID = 1L;
 
 @Override
 protected void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  System.out.println("Hi, Gurugubelli Technologies");
  System.out.println("I am redirecting to you, welcome-qurugubellitech.jsp file");
  
  response.sendRedirect("welcomegurugubellitech.jsp");
 }
}

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome to Gurugubelli Technologies</title>
</head>
<body>
<center>
 <h1>Hi, Welcome to Gurugubelli Technologies....</h1>
</center>
</body>
</html>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <groupId>com.gurugubellitech</groupId>
 <artifactId>MavenWebApp</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>war</packaging>
 <dependencies>
  <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jsp-api -->
  <dependency>
   <groupId>org.apache.tomcat</groupId>
   <artifactId>tomcat-jsp-api</artifactId>
   <version>9.0.1</version>
  </dependency>
  
  <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-servlet-api -->
  <dependency>
   <groupId>org.apache.tomcat</groupId>
   <artifactId>tomcat-servlet-api</artifactId>
   <version>9.0.1</version>
  </dependency>

 </dependencies>
</project>

Testing Application:

Deploy application in tomcat server and access application using below url

http://localhost:8080/MavenWebApp/gurugubelliTech

Using this url your servlet will redirect to welcomegurugubellitech.jsp file and will get below page.