0004761: NullPointerException in WebApp.getRealPath

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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

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

Mantis 1.0.0rc3[^]

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