实体类

package org.spring;

public class Hello {
    @Override
    public String toString() {
        return "hello world";
    }
}

添加配置文件my.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">


    <!--调用默认构造-->
    <bean id="hello" class="org.spring.Hello"></bean>
    <!--普通工厂方法构造-->
先生成HelloFactory对象后调用getHello方法
返回值赋给hello
    <bean id="hellofactory" class="org.spring.HelloFactory" ></bean>
    <bean id="hello" factory-bean="hellofactory" factory-method="getHello"></bean>
    <!--静态工厂方法构造-->
    <bean id="hello" class="org.spring.HelloFactory" factory-method="getHello"></bean>


</beans>

测试

public class Application {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("my.xml");
        Hello hello = context.getBean("hello", Hello.class);
        System.out.println(hello.toString());
    }
}