JstlView adds path prefix recursively causing StackOverflowError - spring-mvc

Question

all,
I am writing a demo application to learn usage of the
org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping
class. When I run the application; I get a stack over flow error and logs show that /WEB-INF/view/ is getting recursively prefixed to the URL path. Please help in solving this.
Here's the servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing
infrastructure -->
<!-- Enables the Spring MVC #Controller programming model -->
<annotation-driven />
<beans:bean id="projectDao" class="chomu.dao.ProjectDaoImpl" />
<beans:bean id="projectService" class="chomu.service.ProjectPersistenceService" />
<!-- Bind to a naming convention for controllers and views -->
<!-- p:interceptors-ref="localeChangeInterceptor" -->
<beans:bean id="classnameControllerMappings"
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"
p:order="1" p:caseSensitive="true">
<beans:property name="defaultHandler">
<beans:bean
class="org.springframework.web.servlet.mvc.UrlFilenameViewController" />
</beans:property>
</beans:bean>
<!-- Enables annotated POJO #Controllers -->
<beans:bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- Enables plain Controllers -->
<beans:bean
class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<!-- Resolves views selected for rendering by #Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<beans:property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<!-- Imports user-defined #Controller beans that process client requests -->
<beans:import resource="controllers.xml" />
</beans:beans>
the controllers.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Scans within the base package of the application for #Components to
configure as beans -->
<context:component-scan base-package="chomu" />
<tx:annotation-driven proxy-target-class="true" />
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<bean id="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />
</beans>
the Controller code
package chomu.controller;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import chomu.domain.Project;
import chomu.service.ProjectPersistenceService;
/**
* #author amisr1
* #dateCreated Aug 18, 2011
* #version $Revsion:$
*
* $LastChangedBy:$
* #since
*/
#Controller
public class ProjectController {
#Autowired
private ProjectPersistenceService projectService;
/**
* #return the projectService
*/
public ProjectPersistenceService getProjectService() {
return projectService;
}
/**
* #param projectService
* the projectService to set
*/
public void setProjectService(ProjectPersistenceService projectService) {
this.projectService = projectService;
}
#RequestMapping(method=RequestMethod.GET)
public List<Project> list(){
List<Project> projectList = new ArrayList<Project>();
projectList.add(projectService.getProject(2L));
projectList.add(projectService.getProject(3L));
return projectList;
}
}
and the jsp
<?xml version="1.0" encoding="ISO-8859-1" ?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
xmlns:c="http://java.sun.com/jsp/jstl/core" version="2.0">
<jsp:directive.page contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1" session="false" />
<jsp:output doctype-root-element="html"
doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
omit-xml-declaration="true" />
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Insert title here</title>
</head>
<body>
<table>
<c:forEach var="project" items="${projectList}">
<tr>
<td>${project.id}</td>
<td>${project.name}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
</jsp:root>
I get message similar to the one below in logs before my eclipse crashes:
DEBUG: org.springframework.web.servlet.view.JstlView - Forwarding to resource [/WEB-INF/views/'
DEBUG: org.springframework.web.servlet.view.JstlView - Forwarding to resource [/WEB-INF/views/WEB-INF/views/'
DEBUG: org.springframework.web.servlet.view.JstlView - Forwarding to resource [/WEB-INF/views/WEB-INF/views/WEB-INF/views/project/list'
Aug 22, 2011 8:02:35 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet appServlet threw exception
java.lang.StackOverflowError
at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:505)
at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:216)
at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:547)
at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:216)
at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:547)
and further down the logs
at org.springframework.web.context.request.ServletRequestAttributes.updateAccessedSessionAttributes(ServletRequestAttributes.java:222)
at org.springframework.web.context.request.AbstractRequestAttributes.requestCompleted(AbstractRequestAttributes.java:48)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:664)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
Seeing InternalResourceView in the stack trace when I am actually using UrlBasedViewResolver puzzles me even more.
The WEB-INF/views is actually prefixed some 50 odd times before throwing the error I have pasted a smaller representation of it to avoid verbosity.
Not sure what causing this effect.

Answer 1

Got it to work with some help from the spring forum guys, I made the following changes:
Removed the annotation-driven ad mvc:annotation-driven tags from the servlet-context and controllers XML respectively.
the servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing
infrastructure -->
<beans:bean id="projectDao" class="chomu.dao.ProjectDaoImpl" />
<beans:bean id="projectService" class="chomu.service.ProjectPersistenceService" />
<!-- Bind to a naming convention for controllers and views -->
<!-- p:interceptors-ref="localeChangeInterceptor" -->
<beans:bean id="classnameControllerMappings"
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"
p:order="1" p:caseSensitive="true">
<beans:property name="defaultHandler">
<beans:bean
class="org.springframework.web.servlet.mvc.UrlFilenameViewController" />
</beans:property>
</beans:bean>
<!-- Enables annotated POJO #Controllers -->
<beans:bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- Enables plain Controllers -->
<beans:bean
class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<!-- Resolves views selected for rendering by #Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<!-- Imports user-defined #Controller beans that process client requests -->
<beans:import resource="controllers.xml" />
</beans:beans>
the controllers.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- Scans within the base package of the application for #Components to
configure as beans -->
<context:component-scan base-package="chomu" />
<mvc:resources mapping="/resources/**" location="/resources/" />
<bean id="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />
</beans>
but the root cause was a fault in the servlet mapping, so changed the Dispatechr Servlet mapping to following in web.xml
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/app/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Changed /* to / which was causing the recursive addition of view since it could not find the correct one.
The spring Forum thread is here