Spring-笔记-aopdemo

要用到AOP,除了两个必须的包common-logging和spring，还需要jar包：spring-aspects.jar,aspectjrt-1.5.0,aspjectjrt-1.2,cglib-2.1.3,asm-1.5.3.cglib和asm这两个包有的版本好像不行，我试过几个版本cglib-2.1.3和asm-1.5.3应该是没问题的。
集合这几个jar包我们就可以写demo了。
同样的写两个pojo类，Protelinterview和Interviewee：


package javaapplication2;

public class Interviewee {
    private String name;
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
    public void performe(){
        System.out.println("Thank you for giving the chance to introduce myself,my name is "+this.name+" and I am "+this.age+"......");
    }
   
}




package javaapplication2;

public class Protelinterview {
    public  Interviewee person;
   
    public Interviewee getPerson() {
        return person;
    }

    public void setPerson(Interviewee person) {
        this.person = person;
    }
    public void sayHello()
    {
        System.out.println("Hi!Welcome to protel");
    }
    public void introduceYourself()
    {
        System.out.println("please introduceyourself with your personal resume");
    }
    public void interviewSuccess()
    {
        System.out.println("OK! "+person.getName()+ " You are our found,please work at next week!");
    }
    public void interviewFail()
    {
        System.out.println("Sorry! "+person.getName()+" You are not our chose");
    }
 
}

请注意sayHello()，introduceYourself()，interviewSuccess()，interviewFail()这四个方法，我们现在是要将调用Interviewee.performe()之前先运行sayHello()，introduceYourself()，之后是interviewSuccess()或者interviewFail().
根据以上提前，我们配置文件：democonfig2.xml
  <?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-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
      
      
       <bean id="personalinfor" class="javaapplication2.Personalinfor">
           <property name="age" value="24"/>
       </bean>
       <bean id="daniel" class="javaapplication2.Danielinfor" >
           <property name="p" ref="personalinfor"/>
       </bean>
       <bean id="interviewee" class="javaapplication2.Interviewee">
           <property name="name" value="A"/>
           <property name="age" value="24"/>
       </bean>
       <bean id="protelinterview" class="javaapplication2.Protelinterview"> 
           <property name="person" ref="interviewee" />
       </bean>      
      
       <aop:config>   
            <aop:aspect  ref="protelinterview">
                   <aop:before method="sayHello" pointcut="execution(* *.*.performe(..))"/>
                   <aop:before method="introduceYourself" pointcut="execution(* *.*.performe(..))"/>
                   <aop:after-returning method="interviewSuccess" pointcut="execution(* *.*.performe(..))" />
                   <aop:after-throwing method="interviewFail" pointcut="execution(* *.*.performe(..))" />
            </aop:aspect>
        </aop:config> 
</beans>

--我们定义了一个切面<aop:aspect  ref="protelinterview">，然后切点方法<aop:before method="sayHello" pointcut="execution(* *.*.performe(..))"/>，在运行performe(..)之前，先运行sayHello.我们要注意aop:before ，aop:after-returning，aop:after-throwing这个三个的区别，第一个是performe()执行之前运行，第二个是performe()是成功执行后运行，第三个是performe()执行抛异常运行的。此外还有注意pointcut="execution(* *.*.performe(..))，第一个*指的是执行performe()后的返回类型可以是任意，*.*.performe(..)指的是方法的路径.performe(..)参数可以使任意.
  写一个测试类：
package javaapplication2;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Springdemo {
    public static void main(String[] args) throws Exception { 
     ApplicationContext cet = new ClassPathXmlApplicationContext("democonfig2.xml");
    Interviewee interviewee = (Interviewee)cet.getBean("interviewee");
     interviewee.setName("jason");
     interviewee.setAge(24);
     interviewee.performe();
     }

}