Spring属性付与@Value付与と@PropertySource外部プロファイルのロード

1.エンティティークラス

package com.hjj.bean;

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

public class Person {
	
	//  @Value  ；
	//1、    
	//2、   SpEL； #{}
	//3、   ${}；      【properties】   （           ）
	
	@Value("  ")
	private String name;
	@Value("#{20-2}")
	private Integer age;
	
	@Value("${person.nickName}")
	private String nickName;
	
	
	
	public String getNickName() {
		return nickName;
	}
	public void setNickName(String nickName) {
		this.nickName = nickName;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	
	public Person(String name, Integer age) {
		super();
		this.name = name;
		this.age = age;
	}
	public Person() {
		super();
		// TODO Auto-generated constructor stub
	}
	@Override
	public String toString() {
		return "Person [name=" + name + ", age=" + age + ", nickName=" + nickName + "]";
	}
}

2.構成クラスの作成

package com.hjj.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import com.hjj.bean.Person;

//  @PropertySource          k/v           ;              ${}        
@PropertySource(value={"classpath:/person.properties"})
//  sring         
@Configuration
public class MainConfigOfPropertyValues {
	
	//        person
	@Bean
	public Person person(){
		return new Person();
	}

}

3.テストクラスを作成する

package com.hjj.test;

import org.junit.Test;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;

import com.hjj.bean.Person;
import com.hjj.config.MainConfigOfLifeCycle;
import com.hjj.config.MainConfigOfPropertyValues;

public class IOCTest_PropertyValue {
    //     2  MainConfigOfPropertyValues   
	AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfPropertyValues.class);
	@Test
	public void test01(){
	    //        bean
		printBeans(applicationContext);
		System.out.println("=============");
		
		Person person = (Person) applicationContext.getBean("person");
		System.out.println(person);
		
		//             ，                （                  ）
		ConfigurableEnvironment environment = applicationContext.getEnvironment();
		String property = environment.getProperty("person.nickName");
		System.out.println(property);
		applicationContext.close();
	}
	
	private void printBeans(AnnotationConfigApplicationContext applicationContext){
		String[] definitionNames = applicationContext.getBeanDefinitionNames();
		for (String name : definitionNames) {
			System.out.println(name);
		}
	}
}