Weblogic 10.3.1.0 is using com.bea.core.apache.commons.net_1.0.0.0_1-4-1.jar… I want to use commons-net-2.0.jar from my code

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I want to use commons-net-2.0.jar from my code.

WebLogic uses a parent class loader first strategy and you basically have two options to tweak this behavior:

  • Use the prefer-web-inf-classes element in a weblogic.xml Web application deployment descriptor (that goes in WEB-INF next to the web.xml) ~or~
  • Package your war insider an EAR and use WebLogic Filtering classloader that you configure in a weblogic-application.xml descriptor (that goes in META-INF next to the application.xml)

Here is an example weblogic.xml:

<?xml version="1.0" encoding="UTF-8"?>
<weblogic-web-app
 xmlns="http://www.bea.com/ns/weblogic/90"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.bea.com/ns/weblogic/90 http://www.bea.com/ns/weblogic/90/weblogic- web-app.xsd">
    <container-descriptor>
        <prefer-web-inf-classes>true</prefer-web-inf-classes>
     </container-descriptor>
</weblogic-web-app>

Here is an example weblogic-application.xml:

<?xml version="1.0" encoding="UTF-8"?>
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90">
    <application-param>
        <param-name>webapp.encoding.default</param-name>
        <param-value>UTF-8</param-value>
    </application-param>
    <prefer-application-packages>
        <package-name>javax.jws.*</package-name>
    </prefer-application-packages>
</weblogic-application>

The former option is simpler but is global to the webapp. The later introduces more complexity if you’re not currently using an EAR packaging but gives finer control.

See also

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