aop-annotation

aop说白了就是定义一些常用的切片，但是又不属于某一个类，所以要用切面的方式进行植入，比如日志，事务管理等。

　　首先定义一个切片类（aspect），通知类
对谁用，也就是被通知类（无论用xml方式还是注解方式，对被通知的类都没有代码上的影响）
在被通知类的哪里用（切点，pointcut）
怎么用，定义好多方法，也就是通知
什么时候用，就是对应的after，before，aroud（重点是aroud，aroud可以实现切点前后的关系，不想before，after只能固定着用）
还能通过aop进行扩展（implement interface）

public interface Member {

    public void doJob (String message);

}

public class MemberDaughter implements Member{
    public void doJob (String message){
        System.out.println("=========================     切入点     =======================");
        System.out.println(message + "女儿正在学习");
    }
}

public class MemberSon implements Member{
    public void doJob (String message){
        System.out.println("=========================     切入点     =======================");
        System.out.println(message + "儿子正在打球");
    }
}

public interface Family {

    public void doSomething (String message);
}

public class FamilyCui implements Family {
    private Member member;

    public FamilyCui(Member member) {
        this.member = member;
    }

    public void doSomething (String message){
        member.doJob(message);
    }
}

public interface Outing {
    public void outing();
}

public class OutingImpl implements Outing{
    public void outing(){
        System.out.println("周末去郊游！");
    }
}

这个是被通知类和要扩展的类，再定义一个aspect

public class FamilyLog {

    public void beforFun(String message){
        System.out.println("----------    before information    ------------");
        System.out.println(message);
        System.out.println("想知道孩子们在干啥！");
    }

    public void afterFun(String message) {
        System.out.println("----------    after information    ------------");
        System.out.println(message);
        System.out.println("孩子们玩完了");
    }

    public void afterReturnFun(String message){
        System.out.println("----------    afterReturnFun information    ------------");
        System.out.println(message);
        System.out.println("哦，我知道了");
    }

    public void afterThrowingFun(String message){
        System.out.println("----------    afterThrowing information    ------------");
        System.out.println(message);
        System.out.println("孩子们摔倒了");
    }

    public void aroundFun(ProceedingJoinPoint joinPoint,String message){
        try {
            System.out.println("**********   around information    ***********");
            System.out.println("**********   around before information    ***********");
            System.out.println(message);
            System.out.println("孩子们摔倒了");

            joinPoint.proceed();

            System.out.println("**********   around after information    ***********");
            System.out.println("孩子们玩完了");

            System.out.println("**********   around afterReturnFun information    ***********");
            System.out.println("哦，我知道了");

        } catch (Throwable throwable) {
            System.out.println("**********   around afterThrowing information    ***********");
            System.out.println("孩子们摔倒了");
            throwable.printStackTrace();
        }

    }
}

配置一下xml，定义被通知类，切面类，切入点，切入方法<aop:config>。

<?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.xsd">

       <!--family的bean-->
       <bean id="family" class="spring.in.action.aop.aopTranditional.aop.FamilyCui">
              <constructor-arg ref="member" />
       </bean>

       <bean id="member" class="spring.in.action.aop.aopTranditional.aop.MemberDaughter"></bean>

       <!--aop aspect要用到的类-->
       <bean id="familyLog" class="spring.in.action.aop.aopTranditional.aspect.FamilyLog"></bean>

       <!--aop的配置-->
       <aop:config>
              <!--用familyLog做aop-->
              <aop:aspect ref="familyLog">
                      <!--定义切入点-->
                      <aop:pointcut id="doSomthing" expression="execution(* *.doSomething(..)) and args(message)"/>
                      <!--关联切入点，并指定方法-->
                      <aop:before pointcut-ref="doSomthing" method="beforFun"/>
                      <aop:after pointcut-ref="doSomthing" method="afterFun"/>
                      <aop:after-returning pointcut-ref="doSomthing" method="afterReturnFun"/>
                      <aop:after-throwing pointcut-ref="doSomthing" method="afterThrowingFun"/>
                      <aop:around pointcut-ref="doSomthing" method="aroundFun"/>
                  <aop:declare-parents
                          types-matching="spring.in.action.aop.aopTranditional.aop.Family+"
                          implement-interface="spring.in.action.aop.aopTranditional.interfaceImpl.Outing"
                          default-impl="spring.in.action.aop.aopTranditional.interfaceImpl.OutingImpl"/>
              </aop:aspect>
       </aop:config>
</beans>

测试类和之行结果

public class TestDiAopSimple {

    public static void main(String[] args) {
        ApplicationContext context =  new ClassPathXmlApplicationContext("spring-aop-tranditional.xml");
        Family family = (Family) context.getBean("family");
        family.doSomething("这是亲和我的家！");

        Outing outing = (Outing)context.getBean("family");
        System.out.println("INTERFACE IMPL____________________________");
        outing.outing();
    }
}





/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/bin/java -Didea.launcher.port=7535 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA 14.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/javafx-doclet.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/lib/tools.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/htmlconverter.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_76.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Users/cuimiao/practice/SpringInAction/spring-in-aciton-bean/target/test-classes:/Users/cuimiao/practice/SpringInAction/spring-in-aciton-bean/target/classes:/Users/cuimiao/.m2/repository/junit/junit/4.12/junit-4.12.jar:/Users/cuimiao/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-context/4.2.2.RELEASE/spring-context-4.2.2.RELEASE.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-aop/4.2.2.RELEASE/spring-aop-4.2.2.RELEASE.jar:/Users/cuimiao/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-beans/4.2.2.RELEASE/spring-beans-4.2.2.RELEASE.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-expression/4.2.2.RELEASE/spring-expression-4.2.2.RELEASE.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-core/4.2.2.RELEASE/spring-core-4.2.2.RELEASE.jar:/Users/cuimiao/.m2/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar:/Users/cuimiao/.m2/repository/org/springframework/spring-aspects/4.1.5.RELEASE/spring-aspects-4.1.5.RELEASE.jar:/Users/cuimiao/.m2/repository/org/aspectj/aspectjweaver/1.8.5/aspectjweaver-1.8.5.jar:/Applications/IntelliJ IDEA 14.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain com.cuimiao.test.aop.tranditional.TestDiAopSimple
十一月 29, 2015 11:42:00 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@3af1dde3: startup date [Sun Nov 29 23:42:00 CST 2015]; root of context hierarchy
十一月 29, 2015 11:42:00 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [spring-aop-tranditional.xml]
----------    before information    ------------
这是亲和我的家！
想知道孩子们在干啥！
**********   around information    ***********
**********   around before information    ***********
这是亲和我的家！
孩子们摔倒了
=========================     切入点     =======================
这是亲和我的家！女儿正在学习
**********   around after information    ***********
孩子们玩完了
**********   around afterReturnFun information    ***********
哦，我知道了
----------    afterReturnFun information    ------------
这是亲和我的家！
哦，我知道了
----------    after information    ------------
这是亲和我的家！
孩子们玩完了
INTERFACE IMPL____________________________
周末去郊游！

Process finished with exit code 0

但是xml还是太冗余，所以还是用注释

public interface Member {

    public void doJob(String message);

}

@Component
public class MemberDaughter implements Member {
    public void doJob (String message){
        System.out.println("=========================     切入点     =======================");
        System.out.println(message + "女儿正在学习");
    }
}

@Component
public class MemberSon implements Member {
    public void doJob (String message){
        System.out.println("=========================     切入点     =======================");
        System.out.println(message + "儿子正在打球");
    }
}

public interface Family {

    public void doSomething(String message);
}

public class FamilyCui implements Family {
    @Autowired
    @Qualifier("memberDaughter")
    private Member member;

    public FamilyCui() {
    }

    public FamilyCui(Member member) {
        this.member = member;
    }

    public void doSomething (String message){
        member.doJob(message);
    }
}

定义aspect类，注意这里要定义@Component，因为spring也要扫描这个bean，要不执行不了（才过这个坑）

@Component
@Aspect
public class FamilyLog {

    @Pointcut("execution(* *.doSomething(..)) && args(message)")
    public void family(String message){}

    @Before("family(message)")
    public void beforFun(String message){
        System.out.println("----------    before information    ------------");
        System.out.println(message);
        System.out.println("想知道孩子们在干啥！");
    }

    @After("family(message)")
    public void afterFun(String message) {
        System.out.println("----------    after information    ------------");
        System.out.println(message);
        System.out.println("孩子们玩完了");
    }

    @AfterReturning("family(message)")
    public void afterReturnFun(String message){
        System.out.println("----------    afterReturnFun information    ------------");
        System.out.println(message);
        System.out.println("哦，我知道了");
    }

    @AfterThrowing("family(message)")
    public void afterThrowingFun(String message){
        System.out.println("----------    afterThrowing information    ------------");
        System.out.println(message);
        System.out.println("孩子们摔倒了");
    }

    @Around("family(message)")
    public void aroundFun(ProceedingJoinPoint joinPoint,String message){
        try {
            System.out.println("**********   around information    ***********");
            System.out.println("**********   around before information    ***********");
            System.out.println(message);
            System.out.println("孩子们摔倒了");

            joinPoint.proceed();

            System.out.println("**********   around after information    ***********");
            System.out.println("孩子们玩完了");

            System.out.println("**********   around afterReturnFun information    ***********");
            System.out.println("哦，我知道了");

        } catch (Throwable throwable) {
            System.out.println("**********   around afterThrowing information    ***********");
            System.out.println("孩子们摔倒了");
            throwable.printStackTrace();
        }
    }

    @DeclareParents(value = "spring.in.action.aop.aopTranditional.aop.Family+",
                    defaultImpl = OutingImpl.class)
    public static  Outing outing;
}

定义xml,一定要加上这句（<aop:aspectj-autoproxy>）

　　还有这句（<context:component-scan base-package:"">）但是 xmlns:context="http://www.springframework.org/schema/context" 这个有坑，有时不对。

<?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">

       <context:component-scan base-package="spring.in.action"/>

       <aop:aspectj-autoproxy/>
       <bean id="familyAspectAnnotation" class="spring.in.action.aop.aopAnnotation.aop.FamilyCui">
       </bean>

       <!--<bean id="familyAspectj" class="spring.in.action.aop.aopAnnotation.aop.FamilyCui"-->
               <!--factory-method="aspectOf">-->

       <!--</bean>-->
</beans>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>spring-bean</groupId>
  <artifactId>spring-in-aciton-bean</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>spring-in-aciton-bean Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.2.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.2.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.1.5.RELEASE</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>spring-in-aciton-bean</finalName>
  </build>
</project>

posted @ 2015-11-29 23:56 damiao_hungry 阅读(256) 评论(0) 编辑收藏举报

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