ClassNotFoundException error in apache karaf

Question

I added contect-param tab in the web.xml file

<context-param>
    <param-name>blueprintLocation</param-name>
    <param-value>OSGI-INF/blueprint/blueprint.xml</param-value>
</context-param>

also listner class in the web.xml file

<listener>
    <listener-class>org.apache.aries.blueprint.web.BlueprintContextListener</listener-class>
</listener>

after loading to karaf, I am getting the error below:

java.lang.ClassNotFoundException: org.apache.aries.blueprint.web.BlueprintContextListener not found by com.test.test.core.jsonstore-http-api

How to resolve this issue?

Answer 1

The error indicates that your bundle is probably not importing the package org.apache.aries.blueprint.web at his MANIFEST.MF file.

There are several ways to fix that, if you are using maven-bundle-plugin, you can add the package manually to the Import-Package directive, just like this:

<plugins>
  <plugin>
    <groupId>org.apache.felix</groupId>
    <artifactId>maven-bundle-plugin</artifactId>
    <extensions>true</extensions>
    <configuration>
      <instructions>
        <Import-Package>
        org.apache.aries.blueprint.web,
        *
        </Import-Package>
      </instructions>
    </configuration>
  </plugin>
</plugins>

If you are using another tool to generate your manifest, it should be similar to that.