Spring 使用JDBC

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註解配置AOP

　　項目路徑：E:\JavaWebSrc\FirstSpringAOP

　　1：接口代碼　

　　　　接口爲 IPerson ，接口不需要寫註釋

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

　　2：實體類代碼

　　　　　student繼承了IPerson接口　

//將student實例化。裝配到spring容器中
@Component("student")
public class Student implements IPerson {

    @Value(value = "1")
    private int id;
    @Value(value = "余文輝")
    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：切面類

　　　　這裏使用的註解需要導入（aopaliance.jar和　　aspectjweaver.jar 兩個jar包）　

//切面聲明
@Aspect
//裝配到spring容器中
@Component
public class LoggingAspect {
//    聲明切入點  聲明切入點表達式
    @Pointcut("execution(* com.yuwenhui.annotation.Student.* (..))")
    public void JoinPointExpecssion(){};
//前置通知
    @Before("JoinPointExpecssion()")
    public void beforMethod(JoinPoint joinPoint){
//        獲得方法名
        String name = joinPoint.getSignature().getName();
//        獲得參數列表，再將參數數組轉換成List集合
        List<Object> args = Arrays.asList(joinPoint.getArgs());
        System.out.println("前置通知");
        System.out.println("參數:"+args);

    }
//後置通知
    @After("JoinPointExpecssion()")
    public void afterMethod(JoinPoint joinPoint){
        String name = joinPoint.getSignature().getName();
        List<Object> args = Arrays.asList(joinPoint.getArgs());
        System.out.println("後置通知");
        System.out.println("參數:"+args);
    }
//    返回通知，在方法正常結束的時候返回，且 必須要有一個返回值
    @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);
    }
//    異常通知 ，將在方法拋出異常時觸
    @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("異常信息"+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">
    <!--   掃描指定包下注釋  -->
    <context:component-scan base-package="com.yuwenhui.annotation"></context:component-scan>
   <!-- 聲明Aspect配置 -->
    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>

　　測試類

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配置還是annotation配置，接口類都不需要改變

　　

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

　　2：實體類配置

　　　　

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：切面類

　　

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("參數:"+args);

    }

    public void afterMethod(JoinPoint joinPoint){
        String name = joinPoint.getSignature().getName();
        List<Object> args = Arrays.asList(joinPoint.getArgs());
        System.out.println("後置通知");
        System.out.println("參數:"+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("異常信息"+e);
    }
}

　　4:測試類

　　　　

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頭，不是IDEA自動生成的   -->
    <!--  配置實體類，併爲相關字段初始化  -->
    <bean id="student" class="com.yuwenhui.xml.Student">
        <property name="name" value="余文輝"></property>
        <property name="id" value="1"></property>
        <property name="sex" value="男"></property>
    </bean>
    <!--  聲明切面類，這裏只是聲明爲普通的bean類  -->
    <bean id="loggingAspect" class="com.yuwenhui.xml.LoggingAspect"></bean>
    <!-- 配置aop   -->
    <aop:config>
        <!-- 配置切點表達式   -->
        <aop:pointcut id="pointcut" expression="execution(* com.yuwenhui.xml.Student.* (..))"/>
        <!-- 這裏纔是真正的聲明切面   -->
        <aop:aspect ref="loggingAspect">
            <!--前置通知-->
            <aop:before method="beforMethod" pointcut-ref="pointcut"/>
            <!--後置通知-->
            <aop:after method="afterMethod" pointcut-ref="pointcut"/>
            <!--返回通知-->
            <aop:after-returning method="afterMethodRetuning" pointcut-ref="pointcut" returning="result"/>
            <!--異常通知-->
            <aop:after-throwing method="afterThrowing" pointcut-ref="pointcut" throwing="e"/>
        </aop:aspect>
    </aop:config>
</beans>

 

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