@ 添加属性（属性注入）

//配置

<?xml version="1.0" encoding="UTF-8"?>
<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/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd "
xmlns="http://www.springframework.org/schema/beans">
<context:component-scan base-package="cn.jy.domain"></context:component-scan>
</beans>

//User类

package cn.lijun.domain;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;

//<bean name="user" class="cn.lijun.domain.User">
//@Component("user")
//@Service("user")
//@Controller("user")
@Repository("user")
//@Scope(scopeName="singleton")
public class User {
    private String name;
    
    private Integer age;
    @Autowired
    @Qualifier("car")
    private Car car;
    
    public User() {
        
    }  
 public User(String name, Integer age, Car car) {
        this.name = name;
        this.age = age;
        this.car = car;
    }
public User(Integer age, Car car) {
        this.age = age;
        this.car = car;
    }
    public String getName() {
        return name;
    }
    @Value("QIANG")
    public void setName(String name) {
        this.name = name;
    }
    public Integer getAge() {
        return age;
    }
    @Value("22")
    public void setAge(Integer age) {
        this.age = age;
    }
    public Car getCar() {
        return car;
    }
    public void setCar(Car car) {
        this.car = car;
    }
//    @PostConstruct
//    public void init(){
//        System.out.println("我是初始化方法");
//    }
//    @PreDestroy
//    public void destory(){
//        System.out.println("我是销毁方法");
//    }
    @Override
    public String toString() {
        return "User [name=" + name + ", age=" + age + ", car=" + car + "]";
    }
    
}

//Car类

package cn.jy.domain;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
@Component("car")
public class Car {
     private String name;
     private String color;

public String getName() {
        return name;
    }
    @Value("法拉利")

public void setName(String name) {
        this.name = name;
    }

public String getColor() {
        return color;
    }
    @Value("呕吐绿" + "")

public void setColor(String color) {
        this.color = color;
    }
    @Override
public String toString() {
        return "Car [name=" + name + ", color=" + color + "]";
    }
     
}