Spring Maven Project

Spring Project with Eclipse & Maven

 

 1. Set up a Maven Project

 

 

 

 

GroupId identifies the project uniquely across all projects, so we need to provide a naming schema.

 ArtifactId is the name of the jar without version.

 

 

2. Add Spring Dependency

 

pom.xml

<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.devyan</groupId>

  <artifactId>DependencyInjectionByConstructor</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <dependencies>

                    <dependency>

                                        <groupId>org.springframework</groupId>

                                        <artifactId>spring-core</artifactId>

                                        <version>${spring.version}</version>

                    </dependency>

                    <dependency>

                                        <groupId>org.springframework</groupId>

                                        <artifactId>spring-context</artifactId>

                                        <version>${spring.version}</version>

                    </dependency>

  </dependencies>

  <properties>

                                        <spring.version>3.2.3.RELEASE</spring.version>

                    </properties>

</project>

  3. Create the Spring Bean Configuration File

Create a bean configuation file named "applicationContext.xml" under src/main/resources directory.

<?xml version="1.0" encoding="UTF-8"?> 

    <beans 

        xmlns="http://www.springframework.org/schema/beans" 

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

        xmlns:p="http://www.springframework.org/schema/p" 

        xsi:schemaLocation="http://www.springframework.org/schema/beans 

                    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 

     

    <bean id="e" class="com.devyan.Employee"> 

         <constructor-arg value="10" type="int" ></constructor-arg> 

         <constructor-arg value="Devayan"></constructor-arg>

    </bean> 

    </beans> 

4. Create a Spring Bean

Create Employee Bean under /src/main/java directory. 

package com.devyan;

public class Employee {

        

         private int id;

         private String name;

        

         public Employee()

         {

                 System.out.println("def cons");

         }

        

         public Employee(int d)

         {

                 this.id=id;

         }

         public Employee(String name) {

                 this.name=name;

         }

         public Employee(int id,String name) {

                 this.id=id;

                 this.name=name;

         }

        

         void show() {

                 System.out.println("ID:"+id+" "+"Name:"+name);

         }

}

  

5. Run the Maven Project

Create a Test class under /src/main/java directory to test the project.

                                       

package com.devyan;

import org.springframework.beans.factory.BeanFactory; 

import org.springframework.beans.factory.xml.XmlBeanFactory;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.core.io.*;

public class Test {

                    public static void main(String[] args) {

                                         ApplicationContext context=new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml"});

                                         BeanFactory factory=context;

                                        Employee s=(Employee)factory.getBean("e");

                                        s.show();

                    }

}

OUTPUT:

ID:10 Name:Devayan