Spring Aop 注解

转载

chisj 2021-08-17 21:03:47 博主文章分类：Java SSH

文章标签 spring xml 抛出异常捕获异常 .net 文章分类 Java 后端开发

转载自：http://blog.csdn.net/yl_wh/article/details/8473510

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package com.spring.aop.test;
public class My {
public String testAop() throws Exception {
System.out.println("test aop");
int i = 10;
if (i > 1) {
//throw new Exception("i > 1");
}
return "aop is ok";
}
}
package com.spring.aop.test;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
@Aspect
public class MyAspect {
/**
* 调用前通知
*/
@Before(value="execution(* com.spring.aop.test.*.*(..))")
public void before(JoinPoint jp){
System.out.println("aspect - befoer " + jp.toString());
}
/**
* 抛出异常后通知
*/
@AfterThrowing(value="execution(* com.spring.aop.test.*.*(..))", throwing="ex")
public void afterThrowing(Exception ex) {
System.out.println("aspect - after throwing " + ex.getMessage());
}
/**
* 环绕通知
*/
@Around(value="execution(* com.spring.aop.test.*.*(..))")
public Object around(ProceedingJoinPoint pjp) throws Throwable {
System.out.println("aspect - around before");
Object result = pjp.proceed();
System.out.println("aspect - around after");
return result;
}
/**
* 调用后通知
*/
@After(value="execution(* com.spring.aop.test.*.*(..))")
public void after(JoinPoint jp) {
System.out.println("aspect - after " + jp.toString());
}
/**
* 调用返回后通知
*/
@AfterReturning(value="execution(* com.spring.aop.test.*.*(..))")
public void afterReturn(JoinPoint jp) {
System.out.println("aspect - after returning " + jp.toShortString());
}
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"applicationContext.xml"});
My my = (My)context.getBean("my");
try {
String s = my.testAop();
System.out.println(s);
} catch (Exception e) {
System.out.println("最外层捕获异常：" + e.getMessage());
}
}
}