Spring空值和特殊字符的注入方式

public class Book {
    private String bname;
    private String bauthor;
    private String address;

    public void setBname(String bname) {
        this.bname = bname;
    }

    public void setBauthor(String bauthor) {
        this.bauthor = bauthor;
    }

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

    public void testDemo(){
        System.out.println(bname+"    "+bauthor+"    "+address);
    }
}

<?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">

    <!--1.配置Book对象创建-->
    <bean id="book" class="com.health.IOC.E_空值和特殊字符注入.Book">
        <!--2.set方法注入属性-->
        <property name="bname" value="围城"/>
        <property name="bauthor" value="钱钟书"/>

        <!--设置null-->
        <!--<property name="address">
            <null/>
        </property>-->

        <!--特殊符号
            1.把<>用转义字符 &lt; &gt;转义
            2.把特殊符号写道CDATA
        -->
        <property name="address">
            <value><![CDATA[<<南京>>]]></value>
        </property>

    </bean>
    
</beans>

public class test05 {
    public static void main(String[] args) {
        ApplicationContext context =
                new ClassPathXmlApplicationContext("com/health/IOC/E_空值和特殊字符注入/bean5.xml");
        Book book = context.getBean("book", Book.class);
        book.testDemo();
    }
}