Spring AOP 之 AroundAdviceDemo
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平台:spring2.5
IHello.java
package onlyfun.caterpillar;
public interface IHello {
public void hello(String name);
}
HelloSpeaker.java
package onlyfun.caterpillar;
public class HelloSpeaker implements IHello {
public void hello(String name) {
System.out.println("Hello, " + name);
}
}
LogInterceptor.java
package onlyfun.caterpillar;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
public class LogInterceptor implements MethodInterceptor {
private Logger logger =
Logger.getLogger(this.getClass().getName());
public Object invoke(MethodInvocation methodInvocation)
throws Throwable {
logger.log(Level.INFO,
"method starts..." + methodInvocation.getMethod());
Object result = null;
try {
result = methodInvocation.proceed();
}
finally {
logger.log(Level.INFO,
"method ends..." +
methodInvocation.getMethod() + "/n");
}
return result;
}
}
applicationContext.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-2.0.xsd">
<bean id="logInterceptor"
class="onlyfun.caterpillar.LogInterceptor"/>
<bean id="helloSpeaker"
class="onlyfun.caterpillar.HelloSpeaker"/>
<bean id="helloProxy"
class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces"
value="onlyfun.caterpillar.IHello"/>
<property name="target" ref="helloSpeaker"/>
<property name="interceptorNames">
<list>
<value>logInterceptor</value>
</list>
</property>
</bean>
</beans>
log4j.properties
log4j.rootLogger=WARN, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n
test.java
package onlyfun.caterpillar;
import org.springframework.context.ApplicationContext;
import org.springframework.context.
support.ClassPathXmlApplicationContext;
public class test{
public static void main(String[] args) {
ApplicationContext context =
new ClassPathXmlApplicationContext(
"beans-config.xml");
IHello helloProxy =
(IHello) context.getBean("helloProxy");
helloProxy.hello("Justin");
}
}
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