AOP Dependency Issue in Spring 4.3.4

Question

I'm currently using Spring 4.3.4 to execute a "Simple Aspect Example program". I tried using both XML and Annotation but it gives me BeanCreationException error.

Error creating bean with name 'org.springframework.aop.config.internalAutoProxyCreator'

I've added below mentioned dependencies:

• spring-core 4.3.4
• spring-beans 4.3.4
• spring-context 4.3.4
• spring-aspects 4.3.4

Main:

public class Main {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("com/sonyx64/spring/aop/config/Beans.xml");
        Camera camera = (Camera) context.getBean("camera");
        camera.snap();
        context.close();
    }}

Camera Class:

public class Camera {
    public void snap() {
        System.out.println("SNAP!");
    }
}

Logger Class:

public class Logger {
    public void aboutToTakePhoto() {
        System.out.println("About To Take Photo");
    }
}

Beans.xml

<bean id="camera" class="com.sonyx64.spring.aop.Camera"></bean>
    <bean id="logger" class="com.sonyx64.spring.aop.Logger"></bean>
    <aop:config>
        <aop:pointcut expression="execution(void com.sonyx64.spring.aop.Camera.snap())"
            id="camerasnap" />
        <aop:aspect id="loggeraspect" ref="logger">
            <aop:before method="aboutToTakePhoto" pointcut-ref="camerasnap" />
        </aop:aspect>
    </aop:config>

Please suggest me an appropriate solution to deal with this exception.

Answer 1

The issue is with the particular version of maven repository jar "aspectjweaver-1.8.9.jar". Running with the previous version 1.8.8 solved the issue.

POM.xml:

<build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <properties>
    <maven.target.source>1.8</maven.target.source>
    <maven.target.compiler>1.8</maven.target.compiler>
  </properties>
  <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>4.3.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>4.3.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.3.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aspects</artifactId>
        <version>4.3.4.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.8</version>
    </dependency>
  </dependencies>

Answer 2

The AspectJ weaver version is not the cause of your problem. I just tried, using your code and your POM. No matter if I use weaver 1.8.8 or 1.8.9 or if I completely remove the dependency from the POM, it works beautifully in all cases. So your own answer is wrong, unfortunately.

After you have uploaded your project to Google Drive, I could easily see the problem's root cause: You have a Maven problem. You do not use the standard Maven directory layout in order to make Maven find resources such as beans.xml in directory src/main/resources. Just check target/classes and the JAR created by Maven: no beans.xml in there. So please just fix your directory layout to look something like this:

This is what I did, also removing the <sourceDirectory> directive from the POM. Alternatively, you could set a custom resources directory by configuring Maven Resources Plugin.

---

P.S.: Next time please post your full stack trace, not just part of the error message. Or at least read your own error messages. ;-) There you have it very clearly (I deliberately added some line breaks):

INFORMATION: Loading XML bean definitions from class path resource [com/pop/spring/aop/Beans.xml]
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException:
    IOException parsing XML document from class path resource [com/pop/spring/aop/Beans.xml];
    nested exception is
        java.io.FileNotFoundException:
            class path resource [com/pop/spring/aop/Beans.xml]
            cannot be opened because it does not exist

Answer 3

I was trying the same example what I did first I created the maven project and secondly for aspect weavers dependencies I have added the exclusion for the 1.8.8 version of aspectjweaver and included aspectjweaver 1.8.9 version and it worked.