自动装配

所有的引用都要装配

package autowire;public class Car {    private String brand;    private double price;    public Car() {    }    public Car(String brand, double price) {        this.brand = brand;        this.price = price;    }    public String getBrand() {        return brand;    }    public void setBrand(String brand) {        this.brand = brand;    }    public double getPrice() {        return price;    }    public void setPrice(double price) {        this.price = price;    }    @Override    public String toString() {        return "Car{" +                "brand='" + brand + '\'' +                ", price=" + price +                '}';    }}

package autowire;public class Address {    private String city;    private String street;    public Address() {    }    public Address(String city, String street) {        this.city = city;        this.street = street;    }    public String getCity() {        return city;    }    public void setCity(String city) {        this.city = city;    }    public String getStreet() {        return street;    }    public void setStreet(String street) {        this.street = street;    }    @Override    public String toString() {        return "Address{" +                "city='" + city + '\'' +                ", street='" + street + '\'' +                '}';    }}

package autowire;public class Person {    String name;    Address address;    Car car;    public Person() {    }    public Person(String name, Address address, Car car) {        this.name = name;        this.address = address;        this.car = car;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Address getAddress() {        return address;    }    public void setAddress(Address address) {        this.address = address;    }    public Car getCar() {        return car;    }    public void setCar(Car car) {        this.car = car;    }    @Override    public String toString() {        return "Person{" +                "name='" + name + '\'' +                ", address=" + address +                ", car=" + car +                '}';    }}

package autowire;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class Main {    public static void main(String[] args) {        ApplicationContext ctx = new ClassPathXmlApplicationContext("autowire//autowire.xml");        Person p1 = (Person)ctx.getBean("person1");        System.out.println(p1);        Person p2 = (Person)ctx.getBean("person2");        System.out.println(p2);    }}