spring inject value from properties file annotation

 spring inject value from properties file annotation

Directory Structure:

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.test</groupId>

<artifactId>SpringProperties</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>jar</packaging>

<name>SpringProperties</name>

<url>http://maven.apache.org</url>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

</properties>

<dependencies>

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>3.8.1</version>

<scope>test</scope>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-context</artifactId>

<version>5.3.15</version>

</dependency>

</dependencies>

</project>

info.properties

eid=2

ename=jhon

Employee

package com.test;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Component;

@Component("emp")

public class Employee {

@Value("${eid}")

private Integer eid;

@Value("${ename}")

private String ename;

@Override

public String toString() {

return "Employee [eid=" + eid + ", ename=" + ename + "]";

}

}

AppConfig

package com.test;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

@Configuration

@ComponentScan("com.test")

@PropertySource("classpath:info.properties")

public class AppConfig {

}

App

package com.test;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class App 

{

    public static void main( String[] args )

    {

       AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(AppConfig.class);

       

       Employee emp1 = ac.getBean("emp",Employee.class);

       System.out.println(emp1);

    }

}