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aem_dev1
aem_dev1
Level 3
Oct 16, 2015 2:27 AM UTC
Solved

class not found exception for different framework java classes

Hi,

I am getting below error when i try to access the custom page created

Caused by: java.lang.ClassNotFoundException: javax.servlet.jsp.PageContext not found by <custom package> [502]
        at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1550)

Same error is repeated for all java classes. I mean i created a component and calling java class from component jsp. I am passing currentNode, pageContext etc... from jsp to java class. There are no issues with compilation. But when i access the page with above component getting no class def found for all classes. 

Caused by: java.lang.ClassNotFoundException: javax.jcr.Node not found by <custom package> [505]
        at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1550)

 

Appreciated for any help

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joerghoh
joerghohAccepted solution
Adobe Employee
Oct 16, 2015 2:27 AM UTC

Hi,

Where does your Java class live? Inside an OSGI bundle? Or is it just sitting next to the JSP file? In the first case (which I personally recommend) you need to make sure, that the OSGI bundle contains all relevant OSGI imports. Which is done by default correct if you use the maven-bundle plugin (as setup by the various archetypes for AEM/CQ5, which are floating around ...)

kind regards,
Jörg

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5 replies

smacdonald2008
smacdonald2008
Level 10
Oct 16, 2015 2:27 AM UTC

See this article that uses Sling API and uses location passed in from front end:

https://helpx.adobe.com/experience-manager/using/using-sling-apis.html

The page object is not passed - it's a primitive data type that is passed. Then using the string values - we create the   com.day.cq.wcm.api.Page instance.

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joerghoh
Adobe Employee
joerghohAdobe EmployeeAccepted solution
Adobe Employee
Oct 16, 2015 2:27 AM UTC

Hi,

Where does your Java class live? Inside an OSGI bundle? Or is it just sitting next to the JSP file? In the first case (which I personally recommend) you need to make sure, that the OSGI bundle contains all relevant OSGI imports. Which is done by default correct if you use the maven-bundle plugin (as setup by the various archetypes for AEM/CQ5, which are floating around ...)

kind regards,
Jörg

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smacdonald2008
smacdonald2008
Level 10
Oct 16, 2015 2:27 AM UTC

It's best to pass primitive data types between components and backend Java OSGi Java bundles. A JS object is not a Java object. 

Pass a string value that represents the path and then create the object in Java using the APIs.  

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aem_dev1
aem_dev1Author
Level 3
Oct 16, 2015 2:27 AM UTC

Hi Scott,

 

I am using AEM 6.0 which is deployed in tomcat server. From component jsp, i am calling a java class method by passing pageContext object. In java class method i am using pageconext object to retrieve request, response, currentNode etc...I am getting above exception whenever pagecontext used to get something

Even when i passed currentNode from jsp to java, even i am getting same error with javax.jcr.node not found

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smacdonald2008
smacdonald2008
Level 10
Oct 16, 2015 2:27 AM UTC

What version of AEM are you using? 

Let me see if i got this straight. You're reading page props using a JSP. ie - 

String pageTitle = currentPage.getTitle();

Then you pass these values to a Java OSGi service and then you try to access the page from Java -- and you get these exceptions? 

Are you using JCR API or using SLing API? What other Java libs are you using? 

Please provide a bit more details - including the CQ version. 

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