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| 构造困惑 |
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/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/
///////////////////////////////////////////////////////////////////////
//File: beans.xml
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- ctor confusion -->
<bean id="constructorConfusion" class="ConstructorConfusion">
<constructor-arg type="int">
<value>90</value>
</constructor-arg>
</bean>
</beans>
///////////////////////////////////////////////////////////////////////
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;
public class ConstructorConfusion {
private String someValue;
public ConstructorConfusion(String someValue) {
System.out.println("ConstructorConfusion(String) called");
this.someValue = someValue;
}
public ConstructorConfusion(int someValue) {
System.out.println("ConstructorConfusion(int) called");
this.someValue = "Number: " + Integer.toString(someValue);
}
public static void main(String[] args) {
BeanFactory factory = new XmlBeanFactory(new FileSystemResource(
"build/beans.xml"));
ConstructorConfusion cc = (ConstructorConfusion) factory.getBean("constructorConfusion");
System.out.println(cc);
}
public String toString() {
return someValue;
}
}
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 ConstructorConfusion.zip( 1,196 k) |
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