Spring Bean管理注解方式代码实例

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
  <context:component-scan base-package="org.yzytest1"></context:component-scan>  <!--开启包扫描-->
</beans>

@Component("Demo1")   //使用注解Component
public class Demo1 {
  @Value("yzy")
  private String name;
  public void say(){
    System.out.println("你好呀！"+name);
  }
}

@Component("Demo1")   
public class Demo1 {
  @Value("yzy")      //使用注解Value，属性注入
  private String name;
  public void say(){
    System.out.println("你好呀！"+name);
  }
}

import org.springframework.stereotype.Component;

import javax.annotation.Resource;

@Component("Demo1")
public class Demo1 {
  @Resource(name="User")    //使用@Resource，属性注入对象
  private User user;
  public void say(){
    System.out.println("你好呀！"+user.getUsername());
  }
}