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java.lang.NullPointerException when creating public jsp

I want share the solution of this problem I had today. It took me 5 hours of living hell to figure solve it. When create a public .jsp page, there are TWO things you need to do.

  1. in your plugin, you need the following:

private static final String URL = “userservice/sign-in.jsp”; // replace with your plugin/your.jsp

In init() function I have to add:
AuthCheckFilter.addExclude(URL);

And in destroy():

AuthCheckFilter.removeExclude(URL);

  1. In the .jsp page, you need the following:

If you don’t have this meta tag in your jsp, you will get the following error:

Exception:

java.lang.NullPointerException
at org.jivesoftware.openfire.admin.decorators.main_jsp._jspService(main_jsp.java:1 95)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
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.handle(ServletHandler.java:362)
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.servlet.Dispatcher.include(Dispatcher.java:192)
at com.opensymphony.module.sitemesh.filter.PageFilter.applyDecorator(PageFilter.ja va:156)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:59)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:66)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:42)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:70)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:146)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollect ion.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.j ava:829)
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.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

I just need to share this with you since it caused me so many problems…

Nick

3 Likes

that is the meta tag WITHOUT the code tags, still havent figured out how to do that in this forum…

Thanks very much for having posted this. Followed your suggestion and it all worked. I reckon this saved me a lot of time. Cheers!

hi i am using public servlet insteadof jsp so tell me how can i do this in servlet:

If i write this in servlet

out.write("");

out.write("<meta content=“none” name=“decorator” />");

out.write("");

Then I don’t get any exception but I get

"

"

**in response but i don’t want it with my responce.
**

**
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