Spring AOP简单的配置（注解和xml配置）

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注解配置AOP

　　项目路径：E:\JavaWebSrc\FirstSpringAOP

　　1：接口代码　

　　　　接口为 IPerson ，接口不需要写注释

public interface IPerson {    public void sayNmae();    public void introduceOneSelf();}

　　2：实体类代码

　　　　　student继承了IPerson接口　

//将student实例化。装配到spring容器中
@Component("student")public class Student implements IPerson {    @Value(value = "1")    private int id;    @Value(value = "余文辉")    private String name;    @Value(value = "男")    private String sex;    @Override    public void sayNmae() {        System.out.println(this.name);    }    @Override    public void introduceOneSelf() {        System.out.println(this.toString());    }    @Override    public String toString() {        return "Student{" +                "id=" + id +                ", name='" + name + '\'' +                ", sex='" + sex + '\'' +                '}';    }}

　　3：切面类

　　　　这里使用的注解需要导入（aopaliance.jar和　　aspectjweaver.jar 两个jar包）　

//切面声明@Aspect//装配到spring容器中@Componentpublic class LoggingAspect {//    声明切入点  声明切入点表达式    @Pointcut("execution(* com.yuwenhui.annotation.Student.* (..))")    public void JoinPointExpecssion(){};//前置通知    @Before("JoinPointExpecssion()")    public void beforMethod(JoinPoint joinPoint){//        获得方法名        String name = joinPoint.getSignature().getName();//        获得参数列表，再将参数数组转换成List集合        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("前置通知");        System.out.println("参数:"+args);    }//后置通知    @After("JoinPointExpecssion()")    public void afterMethod(JoinPoint joinPoint){        String name = joinPoint.getSignature().getName();        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("后置通知");        System.out.println("参数:"+args);    }//    返回通知，在方法正常结束的时候返回，且 必须要有一个返回值    @AfterReturning(value = "JoinPointExpecssion()",returning = "result")    public void afterMethodRetuning(JoinPoint joinPoint,Object result){        String name = joinPoint.getSignature().getName();        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("返回通知"+ result);    }//    异常通知 ，将在方法抛出异常时触    @AfterThrowing(value = "JoinPointExpecssion()",throwing ="e")    public void  afterThrowing(JoinPoint joinPoint,Exception e){        String name = joinPoint.getSignature().getName();        System.out.println("返回通知");        System.out.println("异常信息"+e);    }}

　　xml配置：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!--   扫描指定包下注释  -->
    <context:component-scan base-package="com.yuwenhui.annotation"></context:component-scan>
   <!-- 声明Aspect配置 -->
    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>

　　测试类

public class TestAop {    @Test    public void testAop(){        ApplicationContext applicationContext = new  ClassPathXmlApplicationContext("applicationContext.xml");       IPerson student= (IPerson) applicationContext.getBean("student");       student.sayNmae();       student.introduceOneSelf();    }}

XML配置AOP

　　1：接口配置

　　　　不管是XML配置还是annotation配置，接口类都不需要改变

public interface IPerson {    public void sayNmae();    public void introduceOneSelf();}

　　2：实体类配置

public class Student implements IPerson {    private int id;    private String name;    private String sex;    @Override    public void sayNmae() {        System.out.println(this.name);    }    @Override    public void introduceOneSelf() {        System.out.println(this.toString());    }    @Override    public String toString() {        return "Student{" +                "id=" + id +                ", name='" + name + '\'' +                ", sex='" + sex + '\'' +                '}';    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }}

　　3：切面类

public class LoggingAspect {    public void JoinPointExpecssion(){};    public void beforMethod(JoinPoint joinPoint){        String name = joinPoint.getSignature().getName();        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("前置通知");        System.out.println("参数:"+args);    }    public void afterMethod(JoinPoint joinPoint){        String name = joinPoint.getSignature().getName();        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("后置通知");        System.out.println("参数:"+args);    }    public void afterMethodRetuning(JoinPoint joinPoint,Object result){        String name = joinPoint.getSignature().getName();        List<Object> args = Arrays.asList(joinPoint.getArgs());        System.out.println("返回通知"+ result);    }    public void  afterThrowing(JoinPoint joinPoint,Exception e){        String name = joinPoint.getSignature().getName();        System.out.println("返回通知");        System.out.println("异常信息"+e);    }}

　　4:测试类

public class TestXml {    @Test    public void testAop(){        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext-beanxml.xml");        IPerson student= (IPerson) applicationContext.getBean("student");        student.sayNmae();        student.introduceOneSelf();    }}

　　　5：配置文件

　　　　需要格外注意　　　

<?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.xsd        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd">    <!--  需要注意xml头，不是IDEA自动生成的   -->    <!--  配置实体类，并为相关字段初始化  -->    <bean id="student" class="com.yuwenhui.xml.Student">        <property name="name" value="余文辉"></property>        <property name="id" value="1"></property>        <property name="sex" value="男"></property>    </bean>    <!--  声明切面类，这里只是声明为普通的bean类  -->    <bean id="loggingAspect" class="com.yuwenhui.xml.LoggingAspect"></bean>    <!-- 配置aop   -->    <aop:config>        <!-- 配置切点表达式   -->        <aop:pointcut id="pointcut" expression="execution(* com.yuwenhui.xml.Student.* (..))"/>        <!-- 这里才是真正的声明切面   -->        <aop:aspect ref="loggingAspect">            <!--前置通知-->            <aop:before method="beforMethod" pointcut-ref="pointcut"/>            <!--后置通知-->            <aop:after method="afterMethod" pointcut-ref="pointcut"/>            <!--返回通知-->            <aop:after-returning method="afterMethodRetuning" pointcut-ref="pointcut" returning="result"/>            <!--异常通知-->            <aop:after-throwing method="afterThrowing" pointcut-ref="pointcut" throwing="e"/>        </aop:aspect>    </aop:config></beans>

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