spring aop简单应用示例

spring的 aop功能强大，这里是一个简单示例： 监控对特定类或特定方法的调用。

依赖的jar包为：aspectjrt.jar;

1.监控类 LogProfilter.java：
import org.apache.log4j.Logger;
import org.aspectj.lang.ProceedingJoinPoint;

public class LogProfilter {
private static final Logger logger = Logger.getLogger(LogProfilter.class);

public Object logProfilter(ProceedingJoinPoint call) {
Class zlass = call.getTarget().getClass();
String method = call.getSignature().getName();
logger.info("current Class '" + zlass + "' methodName  '" + method + "'. ");
Object object = null;
try {
object = call.proceed();
} catch (Throwable e) {
logger.error(" Hava Exception ", e);
}
logger.info("Out Class '" + zlass + "' methodName  '" + method + "'. ");
return object;
}
}

2.在spring中配置，最好单独一个配置文件。注意文件要元素有不同。
<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

<bean id="logProfilter" class="com.sinovatech.sunshine.common.LogProfilter">
</bean>

<aop:config>
<aop:pointcut id="logPointcut" expression="execution(* com.sinovatech.sunshine.*.model.facade.*.* (..))"/>
<aop:aspect id="logAspect" ref="logProfilter">
<aop:around method="logProfilter" pointcut-ref="logPointcut"/>
</aop:aspect>
</aop:config>

</beans>