1.0属性注入

新建一个people类

package com.java.test3;/** * @author nidegui * @create 2019-06-22 14:45 */public class People {    private Integer id;    private String name;    private String age;    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getAge() {        return age;    }    public void setAge(String age) {        this.age = age;    }    @Override    public String toString() {        return "People{" +                "id=" + id +                ", name='" + name + '\'' +                ", age='" + age + '\'' +                '}';    }}

　　

装配在bean里面

　　

测试：

package com.java.test3;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * @author nidegui * @create 2019-06-22 14:47 */public class Test {    public static void main(String[] args) {        /*属性注入*/       ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");        People people =(People) ac.getBean("people2");        System.out.println(people);    }}

　　

 

2.0构造函数注入

1.0通过类型注入

在实体中添加构造方法

 

public People(Integer id, String name, String age) {        this.id = id;        this.name = name;        this.age = age;    }}

bean.xml里面配置文件

　　

3.0按照索引注入

　　

 

3.0工厂方法注入

 创建一个工厂

package com.java.test3;/** * @author nidegui * @create 2019-06-22 15:15 */public class Factory {    /**     * 定义一个非静态工厂     * @return     */    public People createFactoty(){        People p=new People();        p.setId(1);        p.setName("ni");        p.setAge("25");        return p;    }}

　　

注入bena.xml中

　　

工厂模式的静态方法注入

public static People createFactoty2(){        People p=new People();        p.setId(1);        p.setName("ni");        p.setAge("25");        return p;    }