DI依赖注入

环境搭建

pojo类

Student

public class Student {
    private String name;
    private Address address;
    private String[] books;
    private List<String> hobbys;
    private Map<String,String> cards;
    private Set<String> games;
    private String wife;
    private Properties info;
 
    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<String> getHobbys() {
        return hobbys;
    }
 
    public void setHobbys(List<String> hobbys) {
        this.hobbys = hobbys;
    }
 
    public Map<String, String> getCards() {
        return cards;
    }
 
    public void setCards(Map<String, String> cards) {
        this.cards = cards;
    }
 
    public Set<String> getGames() {
        return games;
    }
 
    public void setGames(Set<String> games) {
        this.games = games;
    }
 
    public String getWife() {
        return wife;
    }
 
    public void setWife(String wife) {
        this.wife = wife;
    }
 
    public Properties getInfo() {
        return info;
    }
 
    public void setInfo(Properties info) {
        this.info = info;
    }
}

Address

public class Address {
    private String address;
 
    public String getAddress() {
        return address;
    }
 
    public void setAddress(String address) {
        this.address = address;
    }
}

实现

public class Mytest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        Student student = (Student) context.getBean("student");
        System.out.println(student.toString());
    }
}

完善注入信息

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <bean id="address" class="com.Google.pojo.Address">
        <property name="address" value="江西"/>
    </bean>
 
<bean id="student" class="com.Google.pojo.Student">
    <!--一般属性注入-->
    <property name="name" value="Spring"/>
    <!--Bean注入-->
    <property name="address" ref="address"/>
 
    <!--数组-->
    <property name="books">
        <array>
            <value>三国演义</value>
            <value>水湖庄</value>
            <value>西游记</value>
            <value>红楼梦</value>
        </array>
    </property>
    <!--集合-->
    <property name="hobbys">
        <list>
            <value>唱</value>
            <value>跳</value>
            <value>rap</value>
            <value>篮球</value>
        </list>
    </property>
    <!--Map-->
    <property name="cards">
        <map>
            <entry key="学生卡" value="23123123"></entry>
            <entry key="好人卡" value="123123123"></entry>
        </map>
    </property>
    <!--Set-->
    <property name="games">
        <set>
 
            <value>LOL</value>
            <value>王者荣耀</value>
            <value>CSGO</value>
 
        </set>
 
    </property>
    <!--null-->
    <property name="wife" value=""/>
    <!--Properties-->
    <property name="info">
        <props>
            <prop key="Driver">com.Google</prop>
            <prop key="ROOT">root</prop>
            <prop key="Password">123123</prop>
        </props>
    </property>
</bean>
</beans>

结果

Student{
 name='Spring',
 address=com.Google.pojo.Address@2ea41516,
 books=[三国演义, 水湖庄, 西游记, 红楼梦],
 hobbys=[唱, 跳, rap, 篮球],
 cards={学生卡=23123123, 好人卡=123123123},
 games=[LOL, 王者荣耀, CSGO],
 wife='',
 info={ROOT=root, Driver=com.Google, Password=123123}
 }