Spring-helloWorld
Spring的helloWorld程序
1配置Spring的开发环境,只需要把下面几个包添加到lib文件夹下面即可:
2编写Bean类,并为其属性提供setter方法,
package com.jeremy.spring.beans; public class HelloWorld { private String name; public void setName(String name) { this.name = name; } public void helloworld() { System.out.println("helloworld: " + name); } }
3添加在src目录下新建ApplicationContext.xml文件
<?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"> </beans>
4在ApplicationContext.xml文件里配置我们写好的Bean类
<bean id="helloWorld" class="com.jeremy.spring.beans.HelloWorld"> <property name="name" value="Spring"></property> </bean>
5测试
@Test public void testMain(){ //1获取ApplicationContext(IOC)容器 ApplicationContext applicationContext=new ClassPathXmlApplicationContext("ApplicationContext.xml"); //2从ApplicationContext容器里获取Bean实例 HelloWorld helloWorld=(HelloWorld) applicationContext.getBean("helloWorld"); //3利用获取到的Bean实例调用Bean的方法 helloWorld.helloworld(); }
以上就是Spring的HelloWold程序