Groovlet + Tomcat: "unable to resolve class" when importing libraries
I'm having trouble running the groovy (groovlet) servlet in tomcat that imports the library class. When I don't import anything the groovlet works correctly, but if I import something that I expect to be on the classpath (I can import the same class into a regular servlet) I see the following error:
groovy.util.ScriptException: Could not parse scriptName: /MyGroovlet.groovy
java.lang.RuntimeException: groovy.util.ScriptException: Could not parse scriptName: /MyGroovlet.groovy
at groovy.servlet.GroovyServlet$1.call(GroovyServlet.java:123)
...
Caused by: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, /MyGroovlet.groovy: 1: unable to resolve class com.mycompany.mypackage.MyLibraryClass
@ line 1, column 1.
The box containing MyLibraryClass
is in shared/lib
, which is loaded by tomcat like this catalina.properties
::
shared.loader=...,${catalina.base}/shared/lib/*.jar,...
My groovlets are rendered as described in the user guide in my app web.xml
:
<servlet>
<servlet-name>GroovyServlet</servlet-name>
<servlet-class>groovy.servlet.GroovyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>GroovyServlet</servlet-name>
<url-pattern>*.groovy</url-pattern>
</servlet-mapping>
And here's the code for Groovlet, MyGroovlet.groovy
:
import com.mycompany.mypackage.MyLibraryClass
MyLibraryClass.someStaticMethod()
My groovlet is deployed to WEB-INF/groovy/MyGroovlet.groovy
, behind the GroovyServlet API .
When I visit http://localhost:8080/myapplication/MyGroovlet.groovy
, the above error is written to application logs.
Is there some way I have to explicitly declare for the GrooveyServlet class for the runtime class? I've tried moving the library to multiple locations, including WEB-INF/lib
moving the actual file MyLibraryClass.class
to WEB-INF/classes
, but no luck.
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I am using the Groovy plugin for Eclipse. Exporting Groovlets to war file also works.
When I export my Groovlet application, this useful plugin places the .groovy files in the / WEB-INF / class directory (in the classpath). And it works when I deploy the war file to my Tomcat Server.
Hope it helps.
Sincerely.
The dumb mistake I made was that I needed to reload the webapp before the jar that I copied to WEB-INF / lib was loaded (for example, restarting the entire Tomcat server, or reloading only a specific application from the Tomcat manager). Editing the .groovy files dynamically right inside Tomcat / webapps / dir and seeing the updates on the pages immediately lulls me to the point that everything will be loaded automatically, but not so with the jars. It was crazy until I realized what was going on.
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