I'd like to use <p:calendar> in my JSF app developed in Netbeans, so I added the PrimeFaces library. However, when I deploy the app, it errors as follows:
Context with name [/ManagedBeansWithComponents] has not yet been started
C:\Users\Dell-pc\Documents\NetBeansProjects\ManagedBeansWithComponents\nbproject\build- impl.xml:1040: The module has not been deployed.
See the server log for details.
BUILD FAILED (total time: 1 second)
And the server log says:
Source Document: jar:file:/C:/Users/Dell-pc/Documents/NetBeansProjects/ManagedBeansWithComponents/build/web/WEB-INF/lib/primefaces-3.5.jar!/META-INF/faces-config.xml
Cause: Class 'org.primefaces.component.fileupload.FileUploadRenderer' is missing a runtime dependency: java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItem
How is this caused and how can I solve it?
java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItem
There is the cause. It's crystal clear. The mentioned class is missing in the runtime classpath. The solution is rather straightforward: put the mentioned class (or, the JAR file containing it) in the runtime classpath. As the package name hints, it's available on http://commons.apache.org/fileupload (which in turn has by the way http://commons.apache.org/io as dependency). Just download and drop those JARs in the same place as PrimeFaces JAR and all should be well.
Unrelated to the concrete problem, note that this particular problem is in turn unintented by PrimeFaces. This problem should actually only occur when you register the FileUploadFilter for the <p:fileUpload> component in web.xml. However, since GlassFish 4.0, it is overzealously preloading every single JSF component and renderer class found in the classpath even if it's never used by the application. The class loading in turn causes all its runtime dependencies to be checked. If it's missing, then you get the NoClassDefFoundError. This problem is thus specific to GlassFish 4.0 and does not occur when using GlassFish 3.x or any other servletcontainer such as Tomcat or JBoss.
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