This week's book giveaways are in the Jython/Python and Object-Oriented programming forums. We're giving away four copies each of Machine Learning for Business: Using Amazon SageMaker and Jupyter and Object Design Style Guide and have the authors on-line! See this thread and this one for details.
Hi there. I am using the "Class-Path" entry in the manifest file (MANIFEST.MF) of my war files to point to JAR libraries I need to reuse. This way I can guarantee that these classes are loaded by the application classloader. If I put these JARs in [JBoss]/lib/ext they will indeed be shared, but will also be loaded by the extensions classloader. You see, I need shared libraries that are loaded by *each* application, but I don't want to copy the JARs into every WEB-INF/lib. Using absolute file paths at the MANIFEST.MF "Class-Path" entry in each WAR file works well with WebSphere, and also works with JBoss. For an example: Manifest-Version: 1.0 Class-Path: file:/W:/lib/persistencia/atual/persistencia.jar
When I deploy such a web-app to JBoss I can read at the server log that the "persistencia" library has been loaded. Indeed, the following code in a JSP page compiles and runs ok: <% Class.forName("br.gov.bcb.comum.persistencia.Consulta"); %> The class "br.gov.bcb.comum.persistencia.Consulta" exists in a JAR referenced in the manifest file classpath. That means that the class exists and has been found by the application classloader. But the code below doesn't compile: <% br.gov.bcb.comum.persistencia.Consulta c; %> I get an "org.apache.jasper.JasperException: Unable to compile ... Class br.gov.bcb.comum.persistencia.Consulta not found.". *VERY* weird. I can only conclude that the JSP compiler is not the same classpath of the application classloader. Is that possible? Tks.
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