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Spring实例参考04-通过工厂创建对象-创新互联

本文供以下文章参考使用:

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Spring笔记https://blog.csdn.net/qq_34378496/article/details/128095043java bean:

package com.evenif.bean;

public class Index {

    private int id;
    private String name;

    public Index() {
        System.out.println("create Index class");
    }

    public Index(int id, String name) {
        this.id = id;
        this.name = name;
        System.out.println("create Index class with params");
    }
    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;
    }

    @Override
    public String toString() {
        return "Index{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

工厂类:

package com.evenif.factory;

import com.evenif.bean.Index;

public class MyFactory {
    public static Index newIndexInstance(int id,String name){
        return new Index(id,name);
    }
}

配置文件:

主测试类:

package com.evenif;

import com.evenif.bean.Index;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        //静态工厂获取对象
        Index indexFromFactory = (Index) context.getBean("indexFromFactory");
        System.out.println(indexFromFactory);
        //动态工厂获取对象
        Index indexFromDynamicFactory = (Index) context.getBean("index");
        System.out.println(indexFromDynamicFactory);

        Index indexAlias01 = (Index) context.getBean("index01");
        System.out.println(indexAlias01);
        Index indexAlias02 = (Index) context.getBean("index02");
        System.out.println(indexAlias02);
        Index indexAlias03 = (Index) context.getBean("index03");
        System.out.println(indexAlias03);
        Index indexAlias04 = (Index) context.getBean("index04");
        System.out.println(indexAlias04);
        Index indexAlias05 = (Index) context.getBean("index05");
        System.out.println(indexAlias05);
    }
}
//执行结果:
//        create Index class with params
//        create Index class with params
//        Index{id=7, name='iff07'}
//        Index{id=8, name='ifdf08'}
//        Index{id=8, name='ifdf08'}
//        Index{id=8, name='ifdf08'}
//        Index{id=8, name='ifdf08'}
//        Index{id=8, name='ifdf08'}
//        Index{id=8, name='ifdf08'}

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