Spring各种类型变量set依赖注入的方法

一、依赖注入的两种方式：构造器注入和set注入。今天我们来说的就是set注入方式。

首先推荐Spring的中文文档链接：https://www.docs4dev.com/docs/zh/spring-framework/5.1.3.RELEASE/reference

下面所记录的文档中都有详细的介绍，但是个人感觉文档缺点就是记录的太过于杂乱。

package com.ly.pojo;

import java.util.*;

public class Student {
//字符串类型
    private String  name;
//Bean类型
    private Address address;
//数组类型
    private String[] book;
//列表类型
    private List hobbies;
//Map类型
    private Map card;
//Set类型
    private Set games;
//空类型
    private String wife;
//properties类型
    private Properties iinfo;

    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[] getBook() {
        return book;
    }

    public void setBook(String[] book) {
        this.book = book;
    }

    public List getHobbies() {
        return hobbies;
    }

    public void setHobbies(List hobbies) {
        this.hobbies = hobbies;
    }

    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 String getWife() {
        return wife;
    }

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

    public Properties getIinfo() {
        return iinfo;
    }

    public void setIinfo(Properties iinfo) {
        this.iinfo = iinfo;
    }

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

下面是配置文件：这里需要注意的是要区分将map和peoperties对比了解。

map中的key和value是通过<entry key="身份证" value="123456789"/>

而peoperties是<prop key="学号">20183763prop>，value的值是写在中间的。

下面的代码中我将其两个写在了一块，便于对比。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
  
    <bean id="address" class="com.ly.pojo.Address">
        <property name="address" value="甘肃省庆阳市南大街"/>
    bean>
    <bean id="student" class="com.ly.pojo.Student">
        
        <property name="name" value="凌云"/>
        
        <property name="address" ref="address"/>
        
        <property name="book">
            <array>
                <value>红楼梦value>
                <value>西游记value>
                <value>水浒传value>
                <value>三国演义value>
            array>
        property>
        <property name="hobbies" >
            <list>
                <value>听歌曲value>
                <value>敲代码value>
                <value>看电影value>
            list>
        property>
         <property name="card">
             <map>
                 <entry key="身份证" value="123456789"/>
                 <entry key="银行卡" value="5555555555"/>
             map>
         property>
        <property name="iinfo">
            <props>
                <prop key="学号">20183763prop>
                <prop key="性别">男prop>
                <prop key="姓名">凌云prop>
            props>
        property>
        <property name="games">
            <set>
                <value>LOLvalue>
                <value>COCvalue>
                <value>BOBvalue>
            set>
        property>
        <property name="wife" >
            <null/>
        property>


     bean>


beans>