一、装配一个bean

二、依赖注入的几种方式

com.cy.entity   People.java:

package com.cy.entity;public class People {    private int id;    private String name;    private int age;        public People() {        super();        // TODO Auto-generated constructor stub    }    public People(int id, String name, int age) {        super();        this.id = id;        this.name = name;        this.age = age;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    @Override    public String toString() {        return "People [id=" + id + ", name=" + name + ", age=" + age + "]";    }        }

spring管理bean的xml： beans.xml:

com.cy.factory下的

静态工厂：PeopleFactory2.java:

package com.cy.factory;import com.cy.entity.People;public class PeopleFactory2 {    public static People createPeople(){        People people = new People();        people.setId(6);        people.setName("小八");        people.setAge(88);        return people;    }}

非静态工厂：PeopleFactory.java:

package com.cy.factory;import com.cy.entity.People;public class PeopleFactory {    public People createPeople(){        People people = new People();        people.setId(5);        people.setName("小七");        people.setAge(77);        return people;    }}

 

测试代码：

package com.cy.service;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.cy.entity.People;public class Test {    @SuppressWarnings("resource")    public static void main(String[] args) {        ApplicationContext ac =new ClassPathXmlApplicationContext("beans.xml");        People people = (People) ac.getBean("people");        System.out.println(people);                //属性注入        People people2 = (People) ac.getBean("people2");        System.out.println(people2);                //构造函数注入  通过类型        People people3 = (People) ac.getBean("people3");        System.out.println(people3);                //工厂方法注入 非静态工厂        People people6 = (People) ac.getBean("people6");        System.out.println(people6);                //工厂方法注入 静态工厂        People people7 = (People) ac.getBean("people7");        System.out.println(people7);            }}

console打印：