spring的简单使用

1、导入依赖

  <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.0.2.RELEASE</version>
  </dependency>

2、编写配置文件

<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.xsd">

    <bean id="AccountService" class="com.itheima.service.impl.AccountServiceImpl"/>
    <bean id="AccountDao" class="com.itheima.dao.impl.AccountDaoImpl"/>

</beans>

3、读取配置文件并使用

public class Client {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
        IAccoutDao accountDao = (IAccoutDao) ac.getBean("AccountDao");
        accountDao.save();

    }
}