Spring_DI注入依赖

依赖注入：set注入

依赖：bean对象的创建依赖于容器。
注入：bean对象中的所有属性，由容器来注入。

实体类：

点击查看代码

package com.cn.demo;

import java.util.*;

public class Student {
    private String name;//value
    private Address address;//ref
    private String[] books;
    private List hobbys;
    private Map card;
    private Set games;
    private Properties info;
    private String wife;

    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 String[] getBooks() {
        return books;
    }

    public void setBooks(String[] books) {
        this.books = books;
    }

    public List getHobbys() {
        return hobbys;
    }

    public void setHobbys(List hobbys) {
        this.hobbys = hobbys;
    }

    public Map getCard() {
        return card;
    }

    public void setCard(Map card) {
        this.card = card;
    }

    public Set getGames() {
        return games;
    }

    public void setGames(Set games) {
        this.games = games;
    }

    public Properties getInfo() {
        return info;
    }

    public void setInfo(Properties info) {
        this.info = info;
    }

    public String getWife() {
        return wife;
    }

    public void setWife(String wife) {
        this.wife = wife;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", address=" + address +
                ", books=" + Arrays.toString(books) +
                ", hobbys=" + hobbys +
                ", card=" + card +
                ", games=" + games +
                ", info=" + info +
                ", wife='" + wife + '\'' +
                '}';
    }
}

点击查看代码

package com.cn.demo;

public class Address {
    private String address;

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "Address{" +
                "address='" + address + '\'' +
                '}';
    }
}

xml文件

点击查看代码

<?xml version="1.0" encoding="UTF-8"?>




    
        
    

    
        
        

        
        

        
        
            
                平凡的世界
                追着风筝的人
                活着
            
        

        
        
            
                打篮球
                玩游戏
                看电影
            
        

        
        
            
                
                
                
            
        

        
        
            
                英雄联盟
                王者荣耀
            
        

        
        
            
        
        
        
            
                020321752326
                杨晨

测试：

点击查看代码

import com.cn.demo.Student;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class StudentTest{
    public static void main(String[] args) {
        /*获取Spring的上下文对象*/
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        /*我们的对象交给Spring去管理了，我们要使用，直接去取出来即可*/
        Student student = (Student) context.getBean("student2");
        System.out.println(student.toString());


    }

        }

结果截图:

后端基础

Spring_DI注入依赖

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