Mega Code Archive

 

Categories / Java Tutorial / Spring

 

Compare Beans From Factory Bean

File: context.xml <?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="sha" class="MessageDigestFactoryBean">         <property name="algorithm" value="SHA1"/>     </bean>     <bean id="md5" class="MessageDigestFactoryBean"/>      </beans> File: Main.java import java.security.MessageDigest; import org.springframework.beans.factory.FactoryBean; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.xml.XmlBeanFactory; import org.springframework.core.io.ClassPathResource; public class Main {   public static void main(String[] args) throws Exception {     XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("context.xml"));     MessageDigestFactoryBean factoryBean = (MessageDigestFactoryBean) factory.getBean("&sha");     String d1 = (String) factory.getBean("sha");     String d2 = (String) factoryBean.getObject();     System.out.println("Equal created? " + (d1.equals(d2)));   } } class MessageDigestFactoryBean implements FactoryBean, InitializingBean {   private static final String DEFAULT_ALGORITHM = "MD5";   private String algorithm = DEFAULT_ALGORITHM;   public Object getObject() throws Exception {     return this.algorithm;   }   public Class getObjectType() {     return MessageDigest.class;   }   public boolean isSingleton() {     return true;   }   public void setAlgorithm(String algorithm) {     this.algorithm = algorithm;   }   public void afterPropertiesSet() throws Exception {     this.algorithm += " after setting";   } }