需求：在Person类中注入Car类
分析： xml中定义Car和Person Person中用注解注入Car
applicationContext.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"
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 http://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config/>
<bean name="car" class="annotation.Car"></bean>
<bean name="person" class="annotation.Person"></bean>
</beans>
Car：
public class Car {
public Car() {
System
.out
.println("car被实例化了");
}
}
Person：
public class Person {
private String name
;
@Autowired
@Qualifier("car")
private Car car
;
public Person() {
}
public Person(Car car
) {
this.car
= car
;
System
.out
.println("Person被实例化了");
}
@Override
public String
toString() {
return "Person{" +
"name='" + name
+ '\'' +
", car=" + car
+
'}';
}
}
测试类
public class test {
public static void main(String
[] args
) {
ApplicationContext ac
= new ClassPathXmlApplicationContext("applicationContext.xml");
Person person
= (Person
) ac
.getBean("person");
System
.out
.println("person = " + person
);
((ClassPathXmlApplicationContext
) ac
).close();
}
}
