spring学习笔记八-Toy模板网

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spring集合Collection注入

1、BookDao接口和实现类

public interface BookDao {
    void save();
}
public class BookDaoImpl implements BookDao {

    private int[] array;
    private List<String> list;
    private Set<String> set;
    private Map<String,String> map;
    private Properties properties;

    public void setArray(int[] array) {
        this.array = array;
    }

    public void setList(List<String> list) {
        this.list = list;
    }

    public void setSet(Set<String> set) {
        this.set = set;
    }

    public void setMap(Map<String, String> map) {
        this.map = map;
    }

    public void setProperties(Properties properties) {
        this.properties = properties;
    }

    
    public void save(){
        System.out.println("book dao save......" );
        System.out.println("遍历数组:"+ Arrays.toString(array));
        System.out.println("遍历List"+ list);
        System.out.println("遍历Set"+ set);
        System.out.println("遍历Map"+ map);
        System.out.println("遍历Properties"+ properties);

    }
}

2、配置文件

<?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="bookDao" class="com.itheima.dao.impl.BookDaoImpl" >
        <property name="array" >
            <array>
                <value>100</value>
                <value>200</value>
                <value>300</value>
            </array>
        </property>
        <property name="list">
            <list>
                <value>itcast</value>
                <value>itheima</value>
                <value>itjava</value>
            </list>
        </property>
        <property name="set">
            <set>
                <value>java</value>
                <value>php</value>
                <value>golang</value>
                <value>golang</value>
                <value>c++</value>
            </set>
        </property>
        <property name="map">
            <map>
                <entry key="country" value="China"/>
                <entry key="province" value="Henan"/>
                <entry key="city" value="Kaifeng"/>
            </map>
        </property>
        <property name="properties">
            <props>
                <prop key="country">china</prop>
                <prop key="province">Henan</prop>
                <prop key="city">Kaifeng</prop>
            </props>
        </property>
    </bean>
</beans>

3、使用方法

 public static void main(String[] args) {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        BookDao bookDao = (BookDao) ctx.getBean("bookDao");
        bookDao.save();
    }