в 17:44, 31 мая 2010

2010-05-31T17:44:26Z

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2010-05-31T15:22:34Z

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== Implements MethodBeforeAdvice To Check Parameters ==

<p>File: context.xml</p>



<source lang="java">
<?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="afterBean" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target">
<bean class="MtBean">
<property name="firstName" value="AAA"/>
</bean>
</property>
<property name="interceptorNames">
<list>
<idref bean="nullArgumentsNotAllowedBeforeAdvice"/>
</list>
</property>
<property name="proxyTargetClass" value="true"/>
</bean>
<bean id="nullArgumentsNotAllowedBeforeAdvice"
class="NullArgumentsNotAllowedBeforeAdvice"/>
</beans></source>



== Method Before Advice ==

<p>File: Main.java</p>



<source lang="java">
import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;
public class Main {
public static void main(String[] args) throws Exception {
MessageWriter target = new MessageWriter();
ProxyFactory pf = new ProxyFactory();
pf.addAdvice(new SimpleBeforeAdvice());
pf.setTarget(target);
MessageWriter proxy = (MessageWriter) pf.getProxy();
proxy.writeMessage();
}
}
class MessageWriter {
public void writeMessage() {
System.out.println("A");
}
}
class SimpleBeforeAdvice implements MethodBeforeAdvice {
public void before(Method method, Object[] args, Object target) throws Throwable {
System.out.println("Before method: " + method.getName());
}
}</source>

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в 17:44, 31 мая 2010

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