Spring之IOC通过构造方法实例化Bean的方式

程序员文章站 2022-05-23 15:19:29

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Spring框架搭建实例

Spring之IOC创建对象的方式

无参构造方法

有参构造方法

constructor-arg index

综合

Spring框架搭建实例

Spring之IOC创建对象的方式

我们的学生类Student代码

package com.lingaolu;

/**
 * @author 林高禄
 * @create 2020-11-03-9:19
 */
public class Student {
    private Long id;
    private String name;
    private String no;
    public Student() {
        System.out.println("Student无参构造执行");
    }

    public Student(String name, String no) {
        System.out.println("Student半参构造执行");
        this.name = name;
        this.no = no;
    }

    public Student(Long id, String name, String no) {
        System.out.println("Student全参构造执行");
        this.id = id;
        this.name = name;
        this.no = no;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", no='" + no + '\'' +
                '}';
    }
}