Invoking FilterConfig.getInitParameter() when there are no filter parameters 
defined results in NPE
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                 Key: PLUTO-499
                 URL: https://issues.apache.org/jira/browse/PLUTO-499
             Project: Pluto
          Issue Type: Bug
          Components: portlet container
    Affects Versions: 2.0.0
         Environment: JDK 1.5.0_16, Tomcat 5.5.27
            Reporter: Brian DeHamer


Within the init() method of a PortletFilter, if you invoke the 
GetInitParameter() method of the passed-in FilterConfig object a 
NullPointerException is thrown if the filter has been configured with NO 
initialization parameters.  The NPE comes from

org.apache.pluto.driver.services.container.FilterConfigImpl.getInitParameter(FilterConfigImpl.java:48)

If you configure the portlet filter with ANY initiailization parameters the NPE 
is avoided.

According to the JSR286 spec it seems that any call to GetInitParameter() that 
references a non-existent initialization parameter should return null.

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