spring hello world 入门

参考：http://c.biancheng.net/view/4244.html

1.下载包

2.新建接口+类

3.新建xml文件

4.测试

package com.ligy.ioc;

public interface IStudent {
    void do1();
}

package com.ligy.ioc;

public class StudentImpl implements IStudent {
    @Override
    public void do1() {
        System.out.println("this is in do1");
    }
}

<?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:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd">
    <!-- 由 Spring容器创建该类的实例对象 -->
    <bean id="studentDao" class="com.ligy.ioc.StudentImpl" />
</beans>

package com.ligy.test;

import com.ligy.ioc.StudentImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class Test1 {

    @Test
    public void do1() {
        // 定义Spring配置文件的路径
        String xmlPath = "applicationContext.xml";
        // 初始化Spring容器，加载配置文件
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext(
                xmlPath);
        // 通过容器获取personDao实例
        StudentImpl personDao = (StudentImpl) applicationContext
                .getBean("studentDao");
        // 调用 personDao 的 add ()方法
        personDao.do1();
    }
}