Hi,
i was also facing similar type of problem.so i replace my xsp:request tag with
XSPRequestHandler.In your case it should be like this:
(XSPRequestHelper.getSessionAttribute (objectModel, String.valueOf("store-name"),
null));
aboce statement returns Object type.
cast it to the desire object type.
i hope this will work for you.
Regards
Abhishek
"Seth M. Landsman" wrote:
> Greets,
> I'm trying to use the xsp-request logicsheet in my code and am
> running into an odd error. Basically, if I wrap it in <xsp:expr/> and
> use it in the body of the page, it'll work fine, but if I use it in the
> <xsp:logic/> section, it throws a mess of errors. My code seems to
> conform to the code at
> http://xml.apache.org/cocoon/userdocs/xsp/request.html
> (which is down now, but the google cache of it works).
>
> Any clues would be appriciated.
>
> The URL I'm using is :
>
> http://localhost:8080/cocoon/mount/shopping-list/edit/store.html?store-name=foo
>
> which directs to this XSP sheet.
>
> Here's the code :
>
> <?xml version="1.0"?>
> <?cocoon-process type="xsp"?>
>
> <xsp:page language="java"
> xmlns:xsp="http://apache.org/xsp";
> xmlns:xsp-request="http://apache.org/xsp/request/2.0";>
>
> <xsp:logic>
> String store_name = <xsp-request:get-parameter
> name="store-name"/>;
> </xsp:logic>
>
> <store>
> <store-name><xsp-request:get-parameter
> name="store-name"/></store-name>
> </store>
>
> </xsp:page>
>
> which fails. If I get rid of the <xsp:logic> section, it works fine.
>
> the top-most exception is :
>
> DEBUG (2002-07-29) 10:45.47:757
> [core.language.java](/cocoon/mount/shopping-list/edit/store.html)
> HttpProcessor[8080][5]/CompiledProgrammingLanguage: Error while
> instantiating org/apache/cocoon/www/mount/shopping_list/store_editor_xsp
> java.lang.NullPointerException
> at
> org.apache.cocoon.environment.ObjectModelHelper.getRequest(ObjectModelHelper.java:91)
> at
>
>org.apache.cocoon.components.language.markup.xsp.XSPRequestHelper.getParameter(XSPRequestHelper.java:165)
> at
>
>org.apache.cocoon.www.mount.shopping_list.store_editor_xsp.<init>(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/mount/shopping_list/store_editor_xsp.java:62)
> at java.lang.Class.newInstance0(Native Method)
> at java.lang.Class.newInstance(Class.java:237)
> at
>
>org.apache.cocoon.components.language.programming.CompiledProgrammingLanguage.load(CompiledProgrammingLanguage.java:205)
> at
>
>org.apache.cocoon.components.language.generator.ProgramGeneratorImpl.load(ProgramGeneratorImpl.java:245)
> at
>
>org.apache.cocoon.generation.ServerPagesGenerator.setup(ServerPagesGenerator.java:203)
> at
>
>org.apache.cocoon.components.pipeline.AbstractEventPipeline.setupPipeline(AbstractEventPipeline.java:202)
> at
>
>org.apache.cocoon.components.pipeline.CachingEventPipeline.setup(CachingEventPipeline.java:279)
> at
>
>org.apache.cocoon.components.pipeline.CachingEventPipeline.generateKey(CachingEventPipeline.java:142)
> at
>
>org.apache.cocoon.components.pipeline.CachingStreamPipeline.process(CachingStreamPipeline.java:320)
> at
>
>org.apache.cocoon.www.mount.shopping_list.sitemap_xmap.matchN10063(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/mount/shopping_list/sitemap_xmap.java:865)
> at
>
>org.apache.cocoon.www.mount.shopping_list.sitemap_xmap.process(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/mount/shopping_list/sitemap_xmap.java:438)
> at
>
>org.apache.cocoon.www.mount.shopping_list.sitemap_xmap.process(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/mount/shopping_list/sitemap_xmap.java:354)
> at org.apache.cocoon.sitemap.Handler.process(Handler.java:222)
> at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:179)
> at
>
>org.apache.cocoon.www.sitemap_xmap.matchN105AF(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/sitemap_xmap.java:6670)
> at
>
>org.apache.cocoon.www.sitemap_xmap.process(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/sitemap_xmap.java:3341)
> at
>
>org.apache.cocoon.www.sitemap_xmap.process(/Users/seth/PROJECTS/jakarta-tomcat-4.0.4/work/Standalone/localhost/cocoon/cocoon-files/org/apache/cocoon/www/sitemap_xmap.java:3085)
> at org.apache.cocoon.sitemap.Handler.process(Handler.java:222)
> at org.apache.cocoon.sitemap.Manager.invoke(Manager.java:179)
> at
> org.apache.cocoon.sitemap.SitemapManager.process(SitemapManager.java:154)
> at org.apache.cocoon.Cocoon.process(Cocoon.java:575)
> at
> org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:998)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>
>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
> at
>
>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
> at
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at
> org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
> at
> org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
> at java.lang.Thread.run(Thread.java:496)
>
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