spring实现helloWord

第一步：添加架包

第二步：写一个简单的实列

package com.java.test;

/**
 * @author nidegui
 * @create 2019-06-22 10:58
 */
public class Helloworld {

    public void say(){
        System.out.println("nihao spring");
    }
}

　　

第三步：用bean

<?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">

	<bean id="helloWorld" class="com.java.test.Helloworld"></bean>

</beans>

　　

第四步：测试

package com.java.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author nidegui
 * @create 2019-06-22 11:00
 */
public class Test {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml"); //获取bean
        Helloworld helloWorld = (Helloworld) ac.getBean("helloWorld");   //获取bean的名字
        helloWorld.say();
    }
}