Re: [aspectj-users] NoSuchMethodError for a simple hello world aspect in

[马leon <tutufool@xxxxxxxxxxx>]

Hi, Alexander

It works now!

FYI:

Ah, it works!

but it seems a little bit confused to me for the aspectj schema.

Isn't it a little redundant to duplicate the HelloAspect in both the aspect and weaver section.

At first sight, I just guess that classes in <aspects> section will participate in weaving for sure.

Anyway, Thanks a lot!!

Leon

---

Date: Thu, 5 Jun 2014 07:25:27 -0700
From: andrew.clement@xxxxxxxxx
To: aspectj-users@xxxxxxxxxxx
Subject: Re: [aspectj-users] NoSuchMethodError for a simple hello world aspect in scala

Your aop.xml file doesn't include your aspect for weaving, I think if you add it, that will do it. Try this aop.xml:

<aspectj>

<aspects>

<aspect name="com.leon.aop.HelloAspect"/>

  </aspects>

 

<weaver options="-XnoInline">

<include within="com.leon.aop.HelloWorld"/>

                <include within="com.leon.aop.HelloAspect"/>

</weaver>

 

</aspectj>

Certainly the error indicates the weaver didn't 'finish off' the aspect by adding the aspectOf() method.

Andy

---

From: Alexander@xxxxxxxxxxxxxx
Date: Thu, 5 Jun 2014 16:34:32 +0200
To: aspectj-users@xxxxxxxxxxx
Subject: Re: [aspectj-users] NoSuchMethodError for a simple hello world aspect in scala

I do not speak Scala, but I guess the methkd's return value will be its last statement's value. For void methods this might not make much difference (no idea), but generally I suggest you explicitly return the result of 'proceed()' (or whatever you want to return instead) if 'proceed()' is not the method's last statement.

-- 

Alexander Kriegisch

http://scrum-master.de

Am 05.06.2014 um 16:01 schrieb 马leon <tutufool@xxxxxxxxxxx>:

Hi, 

I'm trying to do some hello world test in scala, here're code:

class HelloWorld {

  def sayHello() : Unit = println("Hello word")

}

@Aspect

class HelloAspect {

   @Around(value = "execution (* com.leon.aop.HelloWorld.sayHello())")

   def testCP(jp: ProceedingJoinPoint) {

     println("Start...")

     jp.proceed()

     println("End...")

   }

 }

myaop.xml:

<aspectj>

<aspects>

<aspect name="com.leon.aop.HelloAspect"/>

  </aspects>

 

<weaver options="-XnoInline">

<include within="com.leon.aop.HelloWorld"/>

</weaver>

 

</aspectj>

launcher VM settings:

-javaagent:C:\Users\lma\.ivy2\cache\org.aspectj\aspectjweaver\jars\aspectjweaver-1.7.4.jar -Dorg.aspectj.weaver.loadtime.configuration=META-INF/myaop.xml

Testing class:

class HelloAspectTest extends FlatSpecLike with Matchers {

   "HelloAspect" should "work" in {

     val t = new HelloWorld

     t.sayHello()

   }

 }

Yet I got below exception:

An exception or error caused a run to abort: com.leon.aop.HelloAspect.aspectOf()Lcom/leon/aop/HelloAspect; 

java.lang.NoSuchMethodError: com.leon.aop.HelloAspect.aspectOf()Lcom/leon/aop/HelloAspect;

at com.leon.aop.HelloWorld.sayHello(HelloWorld.scala:7)

at com.leon.aop.HelloAspectTest$$anonfun$1.apply$mcV$sp(HelloAspectTest.scala:15)

at com.leon.aop.HelloAspectTest$$anonfun$1.apply(HelloAspectTest.scala:13)

at com.leon.aop.HelloAspectTest$$anonfun$1.apply(HelloAspectTest.scala:13)

Anyone could help me on this?

Thank

Leon

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