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ID Category Severity Reproducibility Date Submitted Last Update
0004761 [Resin] minor always 09-13-11 09:43 10-04-11 15:24
Reporter stbu View Status public  
Assigned To ferg
Priority normal Resolution fixed Platform
Status closed   OS
Projection none   OS Version
ETA none Fixed in Version 4.0.24 Product Version 4.0.22
  Product Build
Summary 0004761: NullPointerException in WebApp.getRealPath
Description The following piece of JSP code (sample) produces a NullPointerException in Resin's Code for implementation of ServletContext.getRealPath:

<%
 pageContext.getServletContext().getRealPath((String) request.getAttribute("javax.servlet.error.request_uri"));
%>

but the Servlet 2.5 Spec contains the following about getRealPath:

<quote>
This method returns null if the servlet container cannot translate the virtual path to a real path for ***any reason*** ...
</quote>


And any reason includes NULL as argument?
This happens if
   request.getAttribute("javax.servlet.error.request_uri")
returns null itself, e.g. when there is no error in a request.

It would be better and compliant to the 2.5 Servlet Spec if WebApp.getRealPath() would just return null.
Steps To Reproduce
Additional Information Stack Trace in Resin 4.0.22:

java.lang.NullPointerException
    at com.caucho.server.webapp.WebApp.getRealPath(WebApp.java:4318)
    at _jsp._real_22dpath_22dtest__jsp._jspService(real-path-test.jsp:2)
    at _jsp._real_22dpath_22dtest__jsp._jspService(_real_22dpath_22dtest__jsp.java:29)
    at com.caucho.jsp.JavaPage.service(JavaPage.java:64)
    at com.caucho.jsp.Page.pageservice(Page.java:542)
    at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:194)
    at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
    at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
    at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:289)
    at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:811)
    at com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1203)
    at com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1164)
    at com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1148)
    at com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1071)
    at com.caucho.network.listen.TcpSocketLink.handleAcceptTask(TcpSocketLink.java:907)
    at com.caucho.network.listen.AcceptTask.doTask(AcceptTask.java:74)
    at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:97)
    at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:80)
    at com.caucho.network.listen.AcceptTask.run(AcceptTask.java:59)
    at com.caucho.env.thread.ResinThread.runTasks(ResinThread.java:164)
    at com.caucho.env.thread.ResinThread.run(ResinThread.java:130)


Stack Trace in Resin 3.1.11:

java.lang.NullPointerException
    at com.caucho.server.webapp.WebApp.getRealPath(WebApp.java:2456)
    at _jsp._real_22dpath_22dtest__jsp._jspService(real-path-test.jsp:2)
    at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
    at com.caucho.jsp.Page.pageservice(Page.java:578)
    at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:195)
    at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
    at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
    at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:273)
    at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
    at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
    at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
    at java.lang.Thread.run(Thread.java:619)
Attached Files

- Relationships

- Notes
(0005535)
ferg
10-04-11 15:24

server/10m7
 

- Issue History
Date Modified Username Field Change
09-13-11 09:43 stbu New Issue
09-13-11 09:43 stbu Issue Monitored: stbu
09-14-11 00:55 paru Issue Monitored: paru
10-04-11 15:24 ferg Note Added: 0005535
10-04-11 15:24 ferg Assigned To  => ferg
10-04-11 15:24 ferg Status new => closed
10-04-11 15:24 ferg Resolution open => fixed
10-04-11 15:24 ferg Fixed in Version  => 4.0.24


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