Libraries not imported

Plug-in & Open API
1

Hi,

I encounter a little issue in my plugin development.
Before it was ok but now, I got always “java.lang.NoClassDefFoundError: com/overzealous/remark/Options” (or others extern library class).

What’s wrong with my plugin.xml file?

<plugin
        id="com.xxx.vp.plugins"
        name="Export"
        description="Export project on your filesystem"
        provider="Visual Paradigm"
        class="com.xxx.vp.plugins.Export">
	<library path="libs/freemarker-2.3.28.jar" relativePath="true"/>
	<library path="libs/commons-lang3-3.9.jar" relativePath="true"/>
	<library path="libs/jsoup-1.12.1.jar" relativePath="true"/>
	<library path="libs/remark-1.0.0-SNAPSHOT.jar" relativePath="true"/>
    <actionSets>
        <actionSet id="com.xxx.vp.plugins.actionset">
            <action
                    id="com.xxx.vp.plugins.actions.ExportController"
                    actionType="generalAction"
                    label="Export project on your filesystem"
                    tooltip="Export project on your filesystem"
                    style="normal"
                    menuPath="Tools/Report">
                <actionController
                        class="com.xxx.vp.plugins.actions.ExportController"/>
            </action>
            <action
                    id="com.xxx.vp.plugins.actions.ReloadClassesAction"
                    actionType="generalAction"
                    label="Reload Plugin Classes"
                    tooltip="Reload Plugin Classes"
                    style="normal"
                    menuPath="View/#">
                <actionController class="com.xxx.vp.plugins.actions.ReloadClassesActionController" />
            </action>
        </actionSet>
    </actionSets>
</plugin>

And jar files are in folder “C:\Users\xxx\AppData\Roaming\VisualParadigm\plugins\VPExportPlugin\libs”.

What could be wrong?

3

It’s working when, before exporting with the first action, I reload the plugin with second one.
This second one (com.xxx.vp.plugins.actions.ReloadClassesAction), just execute
ApplicationManager.instance().reloadPluginClasses("com.xxx.vp.plugins");

Why libraries are not correctly imported at start?

4

Hi,

What IDE are you using? When you use Eclipse, you can specify any external libraries you are referencing within the project properties as shown in this tutorial: https://www.visual-paradigm.com/tutorials/plugin.jsp

Alternatively, try wrapping your libraries in the following element:

<runtime>
    <library path="libs/freemarker-2.3.28.jar" relativePath="true"/>
    <library path="libs/commons-lang3-3.9.jar" relativePath="true"/>
    <library path="libs/jsoup-1.12.1.jar" relativePath="true"/>
    <library path="libs/remark-1.0.0-SNAPSHOT.jar" relativePath="true"/>
</runtime>
5

Sorry for late reply.

and, thanks GregS,

Right, the <library> should be included in <runtime>. Otherwise those .jar won’t be loaded for your plugin.

FYI:
On another hand, it is a bug (unexpected behavior) that ApplicationManager.reloadPluginClasses(....) will try to load all the <library>(s) in <plugin>...</plugin>, or in <plugin><runtime>...</runtime></plugin> :sweat:

<plugin ...>
    <runtime>
        <library .../>
        ...
    <runtime>

    <library.../>
    ...

</plugin>
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