PersonDaoImpl.java

package aop.annotation;import org.springframework.stereotype.Repository;@Repository("personDao")public class PersonDaoImpl implements PersonDao {    @Override    public void savePerson() {        System.out.println("savePerson");    }}

Transaction.java

package aop.annotation;import org.aspectj.lang.annotation.AfterReturning;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;import org.springframework.stereotype.Component;/** *  * @author Hqy * @Aspect 标识切面类
      * @Pointcut 标注切入点 */@Aspect@Component(value = "transaction")public class Transaction {    @Pointcut("execution(* aop.annotation.PersonDaoImpl.*(..))")    private void trans() {} //切入点签名        @Before("trans()")    public void beforeMethod() {        System.out.println("before Method");    }        @AfterReturning(value="trans()", returning="val")    public void afterMethod(Object val) {        System.out.println("return method.");    }    }

applicationContext.xml