Spring学习之环境搭建

一、导入开发包

二、导入约束

三、新建user对象

四、将user对象交给sping容器去管理——书写applicationcontext配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd ">
    <!-- name属性为给bean给个名字，class属性为讲哪个对象交给spring -->
   <bean name="user_bean" class="com.springlearning.entity.User"></bean>
</beans>

五、编写测试程序

package com.test;

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

import com.springlearning.entity.User;

public class testbean {
	@Test
  public void test(){
	  //创建容器对象
	  ApplicationContext ac=new ClassPathXmlApplicationContext("applicationcontextxml.xml");
	  //获取user对象
	  User a_user=(User) ac.getBean("user_bean");
	  System.out.println(a_user);
	  
  }
}