Spring Bean如何实现自动配置代码实例

<!--
byName：自动在容器上下文查找，和自己对象set方法后面的值对应的beanid;
-->
  <bean id="people" class="com.kuang.pojo.People" autowire="byName">
    <property name="name" value="huba"/>

  </bean>

<!--
byName：自动在容器上下文查找，和自己对象set方法后面的值对应的beanid;
byType:自动在容器上下文查找，和自己对象属性类型相同的bean
-->
  <bean id="people" class="com.kuang.pojo.People" autowire="byName">
    <property name="name" value="huba"/>
  </bean>

<?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
    https://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    https://www.springframework.org/schema/context/spring-context.xsd">
  <context:annotation-config/>
</beans>

public class People {
  @Autowired
  private Cat cat;
  @Autowired
  private Dog dog;
  private String name;
}

public class People {
  @Autowired
  private Cat cat;
  @Autowired
  //可以显式的定义装配的对象
  @Qualifier(value = "dog")
  private Dog dog;
  private String name;
}

public class People {
  @Resource(name="cat")
  private Cat cat;
  @Autowired
  //可以显式的定义装配的对象
  @Qualifier(value = "dog")
  private Dog dog;
  private String name;
}