layer preview fails
-------------------

                 Key: GEOS-4132
                 URL: http://jira.codehaus.org/browse/GEOS-4132
             Project: GeoServer
          Issue Type: Bug
         Environment: ubuntu 10.04.1  geoserver 2.0.2 intel
            Reporter: Awm Lamp
            Assignee: Andrea Aime
            Priority: Trivial


I copied data_dir to /var/lib/geoserver_data
export GEOSERVER_DATA_DIR=/var/lib/geoserver_data
created a workspace, two shapefile stores and published them.
when I click on layer preview I get:


org.apache.wicket.WicketRuntimeException: Can't instantiate page using 
constructor public org.geoserver.web.demo.MapPreviewPage() at 
org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:206)
 at 
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:57)
 at 
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:272)
 at 
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:293)
 at 
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210)
 at 
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
 at 
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1239) 
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1316) at 
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418) at 
org.apache.wicket.RequestCycle.request(RequestCycle.java:532) at 
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356) at 
org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at 
org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:158)
 at 
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
 at 
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
 at 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
 at 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
 at 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
 at 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
 at 
org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
 at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)
 at 
org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
 at 
org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:124)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:110) at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at 
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
 at 
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
 at org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:149) 
at org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98) 
at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73) at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at 
org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:183) 
at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:41) at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726) at 
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at 
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
 at 
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) 
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at 
org.mortbay.jetty.Server.handle(Server.java:324) at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828)
 at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at 
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at 
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) at 
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450) 
Caused by: java.lang.reflect.InvocationTargetException at 
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at 
java.lang.reflect.Constructor.newInstance(Unknown Source) at 
org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:186)
 ... 69 more Caused by: 
org.springframework.beans.factory.BeanCreationException: Error creating bean 
with name 'SVGMapProducer' defined in URL 
[jar:file:/opt/geoserver-2.0.2/webapps/geoserver/WEB-INF/lib/wms-2.0.2.jar!/applicationContext.xml]:
 Instantiation of bean failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Could not instantiate 
bean class [org.vfny.geoserver.wms.responses.map.svg.SvgMapProducerProxy]: 
Constructor threw exception; nested exception is java.lang.NullPointerException 
at 
org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:254)
 at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:925)
 at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:823)
 at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)
 at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
 at java.security.AccessController.doPrivileged(Native Method) at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
 at 
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:283)
 at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
 at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
 at 
org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
 at 
org.geoserver.platform.GeoServerExtensions.extensions(GeoServerExtensions.java:136)
 at 
org.geoserver.web.GeoServerApplication.getBeansOfType(GeoServerApplication.java:136)
 at 
org.geoserver.web.demo.MapPreviewPage.getAvailableWMSFormats(MapPreviewPage.java:105)
 at org.geoserver.web.demo.MapPreviewPage.<init>(MapPreviewPage.java:50) ... 74 
more Caused by: org.springframework.beans.BeanInstantiationException: Could not 
instantiate bean class 
[org.vfny.geoserver.wms.responses.map.svg.SvgMapProducerProxy]: Constructor 
threw exception; nested exception is java.lang.NullPointerException at 
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115) at 
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
 at 
org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:248)
 ... 88 more Caused by: java.lang.NullPointerException at 
org.geoserver.wms.WMS.getSvgRenderer(WMS.java:277) at 
org.vfny.geoserver.wms.responses.map.svg.SvgMapProducerProxy.<init>(SvgMapProducerProxy.java:49)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at 
java.lang.reflect.Constructor.newInstance(Unknown Source) at 
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) ... 90 
more 

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