|
/*
Pro Spring
By Rob Harrop
Jan Machacek
ISBN: 1-59059-461-4
Publisher: Apress
*/
//spring.xml
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="messageDigest" class="MessageDigestFactoryBean">
<property name="algorithmName">
<value>SHA1</value>
</property>
</bean>
</beans>
//////////////////////////////////////////////////////////////////////////////
import java.security.MessageDigest;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
public class MessageDigestFactoryBean implements FactoryBean, InitializingBean {
private String algorithmName = "MD5";
private MessageDigest messageDigest = null;
public Object getObject() throws Exception {
return messageDigest;
}
public Class getObjectType() {
return MessageDigest.class;
}
public boolean isSingleton() {
return true;
}
public void afterPropertiesSet() throws Exception {
messageDigest = MessageDigest.getInstance(algorithmName);
}
public void setAlgorithmName(String algorithmName) {
this.algorithmName = algorithmName;
}
}
//////////////////////////////////////////////////////////////////////////////
import java.security.MessageDigest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;
public class AccessingFactoryBeans {
public static void main(String[] args) {
BeanFactory factory = new XmlBeanFactory(new FileSystemResource(
"build/spring.xml"));
MessageDigest digest = (MessageDigest) factory
.getBean("messageDigest");
MessageDigestFactoryBean factoryBean = (MessageDigestFactoryBean) factory
.getBean("&messageDigest");
}
}
|
AccessingFactoryBeans.zip( 1,197 k)