Spring-aop use Method (ii)

This article describes how SPRING-AOP uses AOP using the way two, spring configuration files.

The Spring-applicationcontext.xml section code is formulated as follows:

2. 
   

4. <!--component Scan--

6. <context:component-scan base-package= "Com.lw.rpc"

8. Use-default-filters= "false" >

10. <context:include-filter type= "Annotation"

12. expression= "Org.springframework.stereotype.Repository"/>

14. <context:include-filter type= "Annotation"

16. expression= "Org.springframework.stereotype.Service"/>

18. </context:component-scan>

20. 
    

22. <!--notice Class--

24. <bean id= "ASPECTJADVICEAOP" class= "Com.lw.rpc.test.AspectJAdviceAop"/>

28. <aop:config>

30. <aop:aspect id= "Useaapect" ref= "ASPECTJADVICEAOP" >

32. <!--configuring Pointcuts--and

34. <aop:pointcut expression= "Execution (* com.lw.rpc. *.*(..))" Id= "Point_cut"/>

36. <!--front-facing notifications-

38. <aop:before method= "Beforeadvice" pointcut-ref= "Point_cut"/>

42. <!--<aop:pointcut id= "Except_add" expression= "Execution (* com.lw.rpc). *.*(..)))" />--

44. <!--post Notification returning specifies the return parameter, and if you do not set the return parameter, you can try it yourself and see what effect it is.

46. <!--<aop:after-returning method= "Afteradvice" pointcut-ref= "point_cut" returning= "result"/>-

48. <!--surround-

50. <!--<aop:around method= "Aroundadvice" pointcut-ref= "Point_cut"/>--

52. <!--throw-in

54. <!--<aop:after-throwing method= "Afterthrow" pointcut-ref= "Point_cut" throwing= "E"/>--

58. </aop:aspect>

60. </aop:config>

The notification class, like the following, implements the four-way AOP interception in this class.

Package com.lw.rpc.test;

Import Org.aspectj.lang.JoinPoint;

Import Org.aspectj.lang.ProceedingJoinPoint;

public class Aspectjadviceaop {

/**

* Front-facing notification

*

* @param JP

*/

public void Beforeadvice (Joinpoint JP) {

System.out.println ("+++++++++++++++ before entering the connection point");

System.out.println (Jp.gettarget (). GetClass () + "object is using this");

System.out.println (Jp.getargs () [0] + "test");

System.out.println ("Enter to Connection point method");

}

/**

* Post Notification

*

* @param JP

*/

public void Afteradvice (Joinpoint JP, String result) {

System.out.println ("+++++++++++++++" after completion of the "Connection point method Execution");

System.out.println (Jp.gettarget (). GetClass () + "object is using this");

System.out.println (Jp.getsignature (). GetName () + "method");

SYSTEM.OUT.PRINTLN ("Result:" + result);

}

/**

* Surround Notifications

*

* @param JP

* @param result

* @throws Throwable

*/

public void Aroundadvice (Proceedingjoinpoint pjp) throws Throwable {

System.out.println ("Enter to surround notice +++++++++++++++");

Parameters of the Calling method

object[] args = Pjp.getargs ();

Method name to invoke

String method = Pjp.getsignature (). GetName ();

Get target Object

Object target = Pjp.gettarget ();

Execution of the return value of the method: calling the proceed () method triggers the Pointcut method execution

Object result = Pjp.proceed ();

System.out.println ("Call method End: Execute after!") \ n ");

System.out.println ("Output:" + args[0] + ";" + method + ";" + target + ";" + result + "\ n");

}

/**

* Exception Notification

*

* @param JP

* @param E

*/

public void Afterthrow (Joinpoint JP, Throwable e) {

SYSTEM.OUT.PRINTLN ("exception notification");

}

}

Target class, which target is to be targeted.

Package com.lw.rpc.service;

Import Com.lw.rpc.model.SpiderOrder;

/**

* Provide data Service

*

* @author

*

*/

Public interface Spiderorderservice {

/**

* Generate order Information

* @param spiderorder

* @return

*/

public int Savespiderorder (Spiderorder spiderorder);

/**

* Modify order Information

* @param spiderorder

*/

public void Updatespiderorder (Spiderorder spiderorder);

/**

* Delete Order Information

* @param Spiderid

*/

public void Deletespiderorderbyid (Long spiderid);

}

Package Com.lw.rpc.service.impl;

Import Org.springframework.stereotype.Service;

Import Com.lw.rpc.model.SpiderOrder;

Import Com.lw.rpc.service.SpiderOrderService;

/**

* Order Fulfillment Class

*

* @author

*

*/

@Service ("Spiderorderservice")

public class Spiderorderserviceimpl implements spiderorderservice{

/**

* Generate Order

*/

public int Savespiderorder (Spiderorder spiderorder) {

Specific business logic

System.out.println ("Preservation Method");

return 0;

}

@Override

public void Updatespiderorder (Spiderorder spiderorder) {

TODO auto-generated Method Stub

}

@Override

public void Deletespiderorderbyid (Long spiderid) {

TODO auto-generated Method Stub

}

}

Test method:

Package com.lw.rpc.test;

Import Org.springframework.context.ApplicationContext;

Import Org.springframework.context.support.ClassPathXmlApplicationContext;

Import Com.lw.rpc.model.SpiderOrder;

Import Com.lw.rpc.service.SpiderOrderService;

public class Springaoptest {

public static void Main (string[] args) {

ApplicationContext cxt = new Classpathxmlapplicationcontext ("/spring/spring-applicationcontext.xml");

Spiderorderservice Spiderorderservice = (spiderorderservice) cxt.getbean ("Spiderorderservice");

Spiderorderservice.savespiderorder (New Spiderorder ());

}

}

The output is as follows:

[Main] INFO org.springframework.context.support.classpathxmlapplicationcontext-refreshing org[email protected]5d6f64b1: startup Date [Sun Apr 23:28:47 CST 2017]; Root of context Hierarchy

[Main] INFO org.springframework.beans.factory.xml.xmlbeandefinitionreader-loading XML Bean definitions from class path resource [Spring/spring-applicationcontext.xml]

[Main] INFO org.springframework.beans.factory.config.propertyplaceholderconfigurer-loading properties file from class path resource [properties/datasource/init.properties]

[Main] INFO org.springframework.beans.factory.config.propertyplaceholderconfigurer-loading properties file from class path resource [properties/redis/redis-conf.properties]

[Main] INFO org.springframework.beans.factory.config.propertyplaceholderconfigurer-loading properties file from class path resource [properties/server/server-config.properties]

Before entering the connection point +++++++++++++++

Class Com.lw.rpc.service.impl.SpiderOrderServiceImpl object is using this

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Go to Connection point method

Save method

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Spring-aop use Method (ii)