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POError with the .class location when building a WAR for a Play! framework application
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  1. POError with the .class location when building a WAR for a Play! framework application
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    copied!<p>I'm working on a 1.2 Play! framework application, and I have a problem when deploying it as a WAR on a Tomcat 6.</p> <p>One page of my application displays a list of information. These information are retrieved from a <code>.yml</code> file. So I have a controller that generate a <code>Iterable&lt;Object&gt;</code> from this <code>.yml</code> file, like that:</p> <pre><code>public static void myFunction() { Constructor constructor = new Constructor(MyClass.class); // org.yaml.snakeyaml.constructor.Constructor constructor.addTypeDescription(new TypeDescription(MyClass.class)); Yaml yaml = new Yaml(constructor); Iterable&lt;Object&gt; listOfInfo = yaml.loadAll(Application.class.getResourceAsStream("/my-file.yml")); render("Application/my-page.html", listOfInfo); } </code></pre> <p>The important point is that <code>MyClass</code> is located in the <code>app/my/company/my-app/</code> package (<code>my.company.my-app.MyClass</code>).</p> <p>When I run my application using <code>play run</code>, there is no problem.</p> <p>Now, I build the WAR package (using <code>play war -o some/dir --zip</code>), and I install this generated WAR on a Tomcat (6.0). Once the server is started, and try to access the corresponding page, I get the following error:</p> <pre><code>@683lh76fn Internal Server Error (500) Template execution error (In /app/views/Application/my-page.html around line 9) Execution error occured in template /app/views/Application/my-page.html. Exception raised was ConstructorException : null; Can't construct a java object f or tag:yaml.org,2002:my.company.my-app.MyClass; exception=Class not found: my.company.my-app.MyClass. play.exceptions.TemplateExecutionException: null; Can't construct a java object for tag:yaml.org,2002:my.company.my-app.MyClass; exception =Class not found: my.company.my-app.MyClass at play.templates.BaseTemplate.throwException(BaseTemplate.java:84) at play.templates.GroovyTemplate.internalRender(GroovyTemplate.java:252) at play.templates.Template.render(Template.java:26) at play.templates.GroovyTemplate.render(GroovyTemplate.java:184) at play.mvc.results.RenderTemplate.&lt;init&gt;(RenderTemplate.java:24) at play.mvc.Controller.renderTemplate(Controller.java:659) at play.mvc.Controller.renderTemplate(Controller.java:639) at play.mvc.Controller.render(Controller.java:694) at controllers.Application.myFunction(Application.java:311) </code></pre> <p>If I have a look in the exploded war, I see that <code>my.company.my-app.MyClass</code> is located in the directory <code>WEB-INF/application/precompiled/java/my/company/my-app/</code> directory.</p> <p>If I move this directory into <code>WEB-INF/classes</code>, then I don't get this error anymore.</p> <p>Why does this error occurs? What are my options to make it work (without modifying manually the WAR)?</p>
 

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