Failed to execute goal (generate-scr-scrdescriptor) on project Unable to load compiled class

[Var]

Hi There,

am using the below plugins to build my project. and one of my servlet is getting the below error. have any one faced the same issue before.?

<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.2</version> </plugin> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-scr-plugin</artifactId> <version>1.20.0</version> <executions> <execution> <id>generate-scr-scrdescriptor</id> <goals> <goal>scr</goal> </goals> <configuration> <!-- Private service properties for all services. --> <properties> <service.vendor>Adobe</service.vendor> </properties> </configuration> </execution> </executions> <configuration> <outputDirectory>${project.build.directory}/classes</outputDirectory> </configuration> <dependencies> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-simple</artifactId> <version>1.5.11</version> </dependency> </dependencies> </plugin>

[ERROR] Failed to execute goal org.apache.felix:maven-scr-plugin:1.20.0:scr (generate-scr-scrdescriptor) on project osgiexample.core: E:\MY-Work\TESTProj\osgiexample\core\src\main\java\osgiexample\core\servlets\MyDataProviderServlet.java : Unable to load compiled class: osgiexample.core.servlets.MyDataProviderServlet -> [Help 1]

[Feike_Visser1]

What version of maven and Java are you using?

[smacdonald2008]

Can you build SimpleServlet following this article: https://helpx.adobe.com/experience-manager/using/first-arch10.html

[Ratna_Kumar]

Hi,

As scott stated, try this article how to create an AEM project by using Maven Adobe Archetype 10 and use those dependencies.

//https://helpx.adobe.com/experience-manager/using/first-arch10.html

Let us know, in case if you face any issues.

~ Ratna

[Var]

smacdonald2008 wrote...

Can you build SimpleServlet following this article: https://helpx.adobe.com/experience-manager/using/first-arch10.html

HI Scott, am using the same archetype10 structure created project. And worte the servlet. as shown below code snippet.

@SuppressWarnings("serial") @SlingServlet(paths="/services/mydataprovider/callservice") @Service(MyDataProvider.class) @Component(label = "Dropdown Data data provider", description = "This servlet provides data for the custom drop down", enabled = true, immediate = true, metatype = false) public class MyDataProviderServlet extends SlingAllMethodsServlet{ .. }

[smacdonald2008]

I can help you - but need to see more details of the code. Email me at scottm@adobe.com.  Looks like there is something mis-configured. 

[Var]

Feike Visser wrote...

What version of maven and Java are you using?

Hi Feike,

Am using Java version: 1.7.0_45 & Maven 3.1.1

~VAr

[Feike_Visser1]

Can you upgrade your maven version? I am using 3.3.9

[Var]

Feike Visser wrote...

Can you upgrade your maven version? I am using 3.3.9

HI Feike, 

Now i started getting a different error after maven upgrade and build.

[ERROR] E:\MY-Work\testporj\osgiexample\core\src\main\java\osgiexample\core\servlets\MyDataProviderServlet.java [1:1]: Class has more than one component definition. Check the annotations and merge the definitions to a single definition.

Code Package link ::  https://drive.google.com/file/d/0B5YKUUmw4jJaSEtkUk1ZWVF2anc/view?usp=sharing

~VAr

[Var]

[Feike_Visser1 · Accepted solution]

You can remove @Component and @Service from MyDataProviderServlet, not needed when you have @SlingServlet.

After doing that it builds on my machine.

[smacdonald2008]

Exactly - found that issue with the email code. 

[Var]

Feike Visser wrote...

You can remove @Component and @Service from MyDataProviderServlet, not needed when you have @SlingServlet.

After doing that it builds on my machine.

Thanks Feike & Scott for the great help. it compiles successfully after the removal of @Component and @Service. Appreciate Adobe Community work for the quick and active communication by Scott via email also. 

~VAr