文章目錄

• 概述
• 示例

概述

Spring Boot主要是通過註解來裝配 Bean 到 Spring IoC 容器中，使用註解裝配Bean就不得不提AnnotationConfigApp licationContext，很顯然它是一個基於註解的 IoC 容器。

示例

POJO類

package com.artisan.springbootmaster.pojo;

public class Artisan {

    public String name;
    public int age;

   	// setter/getter
}

package com.artisan.springbootmaster;
 


import com.artisan.springbootmaster.pojo.Artisan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class AppConfig {

    @Bean(name = "artisan")
    public Artisan initArtisan(){
        Artisan artisan = new Artisan
 
();
        artisan.setName("小工匠");
        artisan.setAge(20);
        return artisan;
    }
}

package com.artisan.springbootmaster;

import com.artisan.springbootmaster.pojo.Artisan;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 


public class LoadTest {

    public static void main(String[] args) {
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(AppConfig.class);
        //Artisan artisan =  applicationContext.getBean(Artisan.class);
        Artisan artisan = (Artisan) applicationContext.getBean("artisan");
        System.out.println(artisan.getName() + " || "  + artisan.getAge());
    }
}