Spring 依赖源码下载地址

https://repo.spring.io/ui/native/release/org/springframework/spring

所需依赖

导入 spring 所需的外部依赖

创建 spring.xml 配置文件

...
public class User {

    public void add() {
        System.out.println("add...");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!--
    配置 User 对象创建
    id：定位
    class：指定类文件
    -->
    <bean id="u" class="com.spring5.User"/>
</beans>

...
import com.spring5.User;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class test {

    @Test
    public void test() {
        // 加载 spring 配置文件
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
        // 获取配置创建的对象
        User user = context.getBean("u", User.class);
        System.out.println("user = " + user);
        user.add();
    }

}