DTDファイルの属性変更例

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" [<!ATTLIST bean singleton (true | false) "false">]>

■例：

t1.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
    <beans>
        <bean id="triangleAlone" class="dto.Triangle" >
        </bean>
        <import resource="t1_1.xml" />
    </beans>

---

t1_1.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" [<!ATTLIST bean singleton (true|false) "false">]>
    <beans>
        <bean id="triangleParent" class="dto.Triangle">
        </bean>

        <bean id="triangleChild" class="dto.Triangle" parent="triangleParent">
        </bean>
    </beans>

確認
```java

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import dto.Triangle;

public class Test {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("dto/t1.xml");

        for (int i = 0; i < 3; i ++) {
            Triangle triangle1 = (Triangle) context.getBean("triangleAlone");
            System.out.println(triangle1);
        }

        for (int i = 0; i < 3; i ++) {
            Triangle triangle1 = (Triangle) context.getBean("triangleParent");
            System.out.println(triangle1);
        }

        for (int i = 0; i < 3; i ++) {
            Triangle triangle2 = (Triangle) context.getBean("triangleChild");
            System.out.println(triangle2);
        }
    }
}