注解开发

1 @Component
2 public class User {
3     @Value("小孩子")设置值
4     public String name;
5 }
6

// 等价于 <bean id="user" class="com.rzk.pojo.User"/>
//@Component 组件

1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:context="http://www.springframework.org/schema/context"
 5        xsi:schemaLocation="http://www.springframework.org/schema/beans
 6         https://www.springframework.org/schema/beans/spring-beans.xsd
 7         http://www.springframework.org/schema/context
 8         http://www.springframework.org/schema/context/spring-context.xsd">
 9     <!--开启注解的支持-->
10     <context:component-scan base-package="com.rzk.pojo"/>
11 </beans>

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        User user = (User) context.getBean("user");
        System.out.println(user.name);
    }
}