10.autowired自动装配

Dept类

package Spring5.autowire;

public class Dept
{
    @Override
    public String toString() {
        return "Dept{}";
    }
}

Emp1类

package Spring5.autowire;

public class Emp1 {
    private Dept dept;

    public void setDept(Dept dept) {
        this.dept = dept;
    }
    public void show(){
        System.out.println(dept);
    }
}

bean9.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
   <!-- 手动装配
    <bean id="Emp1" class="Spring5.autowire.Emp1" >
        <property name="dept" ref="Dept"></property>
    </bean>
    <bean id="Dept" class="Spring5.autowire.Dept"></bean>
    -->

  <!--自动装配 id要与类中的属性名称一致
    <bean id="Emp1" class="Spring5.autowire.Emp1" autowire="byName"></bean>
    <bean id="dept" class="Spring5.autowire.Dept"></bean>
    -->

    <!--自动装配byType-->
    <bean id="Emp1" class="Spring5.autowire.Emp1" autowire="byType"></bean>
    <bean id="Dept" class="Spring5.autowire.Dept"></bean>
</beans>

Test类

public class TEST {
 
    @Test
    public void testBean9(){
        ApplicationContext context=new ClassPathXmlApplicationContext("bean9.xml");
        Emp1 emp = context.getBean("Emp1", Emp1.class);
        emp.show();
    }
}