一.注解方式
打开注解<aop:scoped-proxy />
定义拦截类和注入对象
<bean id="personService" class="com.hx.sprindemo01.service.impl.PersonServiceImpl"/>
<bean id="MyInterceptor" class="com.hx.sprindemo01.service.impl.MyInterceptor"/>
定义切面
@Aspect
public class MyInterceptor {
定义切入点
@Pointcut("execution(* com.hx.sprindemo01.service.impl.PersonServiceImpl.*(..))")
public void anyMethod() {}
定义通知
@Before("anyMethod()&& args(user)")//拦截到参数值
public void dosm(String user){
System.out.println("前置函数"+user);
}
@AfterReturning(pointcut="anyMethod()",returning="result")拦截到返回值
public void doend(String result){
System.out.println("后置函数result"+result);
} @After("anyMethod()")
public void doAfter(){
System.out.println("最终通知");
}
@AfterThrowing("anyMethod()")
public void doAfterThrowing(){
System.out.println("例外通知");
}
@Around("anyMethod()")
public Object doBasicProfiling(ProceedingJoinPoint pjp)throws Throwable{
System.out.println("进入方法");
Object result = pjp.proceed();
System.out.println("退出方法");
return result;
}
}
二.配置文件方式
<aop:aspectj-autoproxy/>
<bean id="personService" class="com.hx.sprindemo01.service.impl.PersonServiceImpl"/>
<bean id="MyInterceptor2" class="com.hx.sprindemo01.service.impl.MyInterceptor2"/>
<aop:config>
<aop:aspect id="myaop" ref="MyInterceptor2">
<aop:pointcut id="mycut" expression="execution(* com.hx.sprindemo01.service.impl.PersonServiceImpl.*(..))"/>
<aop:before pointcut-ref="mycut" method="dosm"/>
<aop:after-returning pointcut-ref="mycut" method="doend"/>
<aop:after-throwing pointcut-ref="mycut" method="doAfterThrowing"/>
<aop:after pointcut-ref="mycut" method="doAfter"/>
<aop:around pointcut-ref="mycut" method="doBasicProfiling"/>
</aop:aspect>
</aop:config>
配置参数,只要修改expression内容就可以了
execution(java.lang.String com.hx.sprindemo01.service.impl.PersonServiceImpl.*(..))
execution(* com.hx.sprindemo01.service.impl.PersonServiceImpl.*(java.lang.String,..))
execution(!void com.hx.sprindemo01.service.impl.PersonServiceImpl.*(java.lang.String,..))
类中方法
execution(* com.hx.sprindemo01.service.impl.PersonServiceImpl.*(java.lang.String,..))
包下所有类
execution(* com.hx.sprindemo01.service.impl..*.*(..))
表达式常见错误:第一个星号后面加空格