spring aop
<?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:security="http://www.springframework.org/schema/security"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd" >
<!-- 启用组件注解扫描 -->
<context:component-scan base-package="com.jaeson.springstudy.aop" />
<!-- 启用AOP注解扫描，@Aspect/@Pointcut/@Before/@After/@Around/@AfterReturning/@AfterThrowing -->
<aop:aspectj-autoproxy expose-proxy="true"/>
</beans>package com.jaeson.springstudy.aop;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.jaeson.hibernatestudy.bean.User;
import com.jaeson.springstudy.aop.AopService;
public class TestAop {
private ClassPathXmlApplicationContext context;
@Before
public void before() {
context = new ClassPathXmlApplicationContext(new String[] {"testAOP.xml"});
}
@After
public void after() {
context.close();
}
@Test
public void testMethodAop() {
AopService service = context.getBean("aopService", AopService.class);
System.out.println("====================================");
service.get(100086L);
System.out.println("====================================");
service.save(new User());
System.out.println("====================================");
service.selfInvoke();
System.out.println("====================================");
service.selfInvoke(new User());
System.out.println("====================================");
service.selfInvocation();
System.out.println("====================================");
try {
service.delete(95977L);
} catch (RuntimeException ex) {
System.out.println(ex.getMessage());
}
System.out.println("====================================");
}
}package com.jaeson.springstudy.aop;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
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.Pointcut;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
@Component
@Aspect
public class AopExample {
private static final Logger logger = LoggerFactory.getLogger(AopExample.class);
@Pointcut("execution(* com.jaeson..dao..*.*(..))")
public void dataAccessOperation() {}
@Pointcut("execution(* com.jaeson..service..*.*(..))")
public void businessService() {}
@Pointcut("execution(* com.jaeson.springstudy.aop.*Service.*(..)))")
public void aspect() {}
/*
* 配置前置通知,使用在方法businessService()上注册的切入点
* 同时接受JoinPoint切入点对象,可以没有该参数
*/
@Before("businessService()")
public void before(JoinPoint joinPoint) {
logger.info("before {}", joinPoint);
}
//配置后置通知,使用在方法businessService()上注册的切入点
@After("businessService()")
public void after(JoinPoint joinPoint) {
logger.info("after {}", joinPoint);
}
//配置环绕通知,使用在方法dataAccessOperation()上注册的切入点
//@Around的返回类型必须为Object，否则在织入非void返回类型的切入点时会抛出异常：
//Null return value from advice does not match primitive return type for:
@Around("dataAccessOperation()")
public Object around(JoinPoint joinPoint) throws Throwable {
Object result = null;
long start = System.currentTimeMillis();
logger.info("begin around {} !", joinPoint);
result = ((ProceedingJoinPoint) joinPoint).proceed();
long end = System.currentTimeMillis();
logger.info("end around {} Use time : {} ms!", joinPoint, (end - start));
return result;
}
//配置后置返回通知,使用在方法businessService()上注册的切入点
@AfterReturning("businessService()")
public void afterReturn(JoinPoint joinPoint) {
logger.info("afterReturn {}", joinPoint);
}
//配置抛出异常后通知,使用在方法businessService()上注册的切入点
@AfterThrowing(pointcut="businessService()", throwing="ex")
public void afterThrow(JoinPoint joinPoint, RuntimeException ex) {
logger.info("afterThrow {} with exception : {}", joinPoint, ex.getMessage());
}
//配置前置通知,拦截返回值类型为com.jaeson.hibernatestudy.bean.User的方法
@Before("execution(com.jaeson.hibernatestudy.bean.User com.jaeson.springstudy.aop.*Service.*(..))")
public void beforeReturnUser(JoinPoint joinPoint) {
logger.info("beforeReturnUser {}", joinPoint);
}
//配置前置通知,拦截参数类型为com.jaeson.hibernatestudy.bean.User的方法
@Before("execution(* com.jaeson.springstudy.aop.*Service.*(com.jaeson.hibernatestudy.bean.User))")
public void beforeArgUser(JoinPoint joinPoint) {
logger.info("beforeArgUser {}", joinPoint);
}
//配置前置通知,拦截含有long类型参数的方法,并将参数值注入到当前方法的形参id中
@Before("aspect() && args(id)")
public void beforeArgId(JoinPoint joinPoint, long id) {
logger.info("beforeArgId {} ({})", joinPoint, id);
}
}package com.jaeson.springstudy.aop;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.aop.framework.AopContext;
import com.jaeson.hibernatestudy.bean.User;
@Service
public class AopService {
private static final Logger logger = LoggerFactory.getLogger(AopService.class);
//自调用无法触发aop的解决办法
//开启暴露Aop代理到ThreadLocal支持
//<aop:aspectj-autoproxy expose-proxy="true"/><!—注解风格支持-->
//<aop:config expose-proxy="true"><!—xml风格支持-->
public void selfInvocation() {
logger.info("AopService.selfInvocation() method . . .");
((AopService)AopContext.currentProxy()).get(0L);
}
//非aop方法的自调用不会触发this方法的aop
public void selfInvoke() {
logger.info("AopService.selfInvoke() method . . .");
this.get(0L);
}
//aop方法的自调用不会触发this方法的aop
public void selfInvoke(User user) {
logger.info("AopService.selfInvoke(User) method . . .");
this.save(user);
}
public User get(long id) {
logger.info("AopService.get(Long) method . . .");
return new User();
}
public void save(User user) {
logger.info("AopService.save(User) method . . .");
}
public void delete(long id) throws RuntimeException {
logger.info("AopService.delete(Long) method . . .");
throw new UnsupportedOperationException("AopService.delete(Long) throw UnsupportedOperationException");} }
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeArgId(AopExample.java:97) beforeArgId execution(User com.jaeson.springstudy.aop.AopService.get(long)) (100086)
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeReturnUser(AopExample.java:83) beforeReturnUser execution(User com.jaeson.springstudy.aop.AopService.get(long))
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.get(AopService.java:39) AopService.get(Long) method . . .
====================================
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeArgUser(AopExample.java:90) beforeArgUser execution(void com.jaeson.springstudy.aop.AopService.save(User))
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.save(AopService.java:45) AopService.save(User) method . . .
====================================
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.selfInvoke(AopService.java:27) AopService.selfInvoke() method . . .
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.get(AopService.java:39) AopService.get(Long) method . . .
====================================
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeArgUser(AopExample.java:90) beforeArgUser execution(void com.jaeson.springstudy.aop.AopService.selfInvoke(User))
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.selfInvoke(AopService.java:32) AopService.selfInvoke(User) method . . .
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.save(AopService.java:45) AopService.save(User) method . . .
====================================
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.selfInvocation(AopService.java:20) AopService.selfInvocation() method . . .
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeArgId(AopExample.java:97) beforeArgId execution(User com.jaeson.springstudy.aop.AopService.get(long)) (0)
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeReturnUser(AopExample.java:83) beforeReturnUser execution(User com.jaeson.springstudy.aop.AopService.get(long))
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.get(AopService.java:39) AopService.get(Long) method . . .
====================================
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopExample.beforeArgId(AopExample.java:97) beforeArgId execution(void com.jaeson.springstudy.aop.AopService.delete(long)) (95977)
[INFO][2016-10-07 15:29:16] com.jaeson.springstudy.aop.AopService.delete(AopService.java:50) AopService.delete(Long) method . . .
AopService.delete(Long) throw UnsupportedOperationException