Hello Spring（原理版）

Hello.java

package com.bing.pojo;

public class Hello {
    private String str;


    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

    @Override
    public String toString() {
        return "Hello{" +
                "str='" + str + ''' +
                '}';
    }
}

bean.xml

MyTest

import com.bing.pojo.Hello;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    @Test
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Hello hello = (Hello) context.getBean("hello");
        System.out.println(hello);
    }
}