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Spring MVC , Tiles and jstl/xml NullPointer Exception during transformation XML to HTM

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allawin
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Spring MVC , Tiles and jstl/xml NullPointer Exception during transformation XML to HTM





</xsl:template>
</xsl:transform>

Here it is my POM file

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>


<groupId>edu.devry</groupId>
<artifactId>keller-webapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
<org.springframework.version>3.0.4.RELEASE</org.springframework.version>
<org.slf4j.version>1.5.10</org.slf4j.version>
<servlet-version>2.4</servlet-version>
<jstl-version>1.1.2</jstl-version>
<jsp-version>2.1</jsp-version>
<sitebricks-version>0.8.3-SNAPSHOT</sitebricks-version>
<org.aspectj-version>1.6.9</org.aspectj-version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-extras</artifactId>
<version>2.2.2</version>
</dependency>


<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
<exclusions>

<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>


<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
</exclusions>
<scope>runtime</scope>
</dependency>


<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>


<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<dependency> 
<groupId>xalan</groupId> 
<artifactId>xalan</artifactId> 
<version>2.7.1</version> 
<scope>compile</scope> 
</dependency> 

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>

</dependencies>
<build>
<finalName>keller.edu</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webappDirectory>${tomcat.home}/webapps/ROOT</webappDirectory>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<warName>keller</warName>
</configuration>
</plugin>
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>7.0.2.v20100331</version>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<configuration>
<filesets>
<fileset>
<directory>
${tomcat.home}/webapps/ROOT
</directory>
<followSymlinks>false</followSymlinks>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.2</version>
</plugin>

</plugins>
</build>

</project>
allawin
I am getting the following exception:
java.lang.NullPointerException
org.apache.taglibs.standard.tag.common.xml.Transfo rmSupport.doEndTag(TransformSupport.java:204)

Could that be that XALAN is in a conflict with Spring?
What I am doing wrong ? What this exception mean?

I would appreciate any help.

Here the details:
I am using Tomcat6, java6, Spring 3

Here my JSP
<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jstl/xml" prefix="x" %>
<div class="hero-sub">

Campus Location FAQs

</div>
<c:import url="/_res/xml/sample.xml" var="xmlContent"/>
<c:import var="xslt" url="/_res/xml/transform.xsl" />
<x:transform xml="$xmlContent}" xslt="$xslt}" />

Here how my resource folder is defined:

<resources mapping="/_res/**" location="/_res/"/>

Here my xsl file:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="facs">

List of user in the XML document


<xsl:apply-templates />
questionansweridAge
</xsl:template>

<xsl:template match="topic">

<xsl:call-template name="processtopic">

</xsl:call-template>
</xsl:template>

<xsl:template name="processtopic">

<xsl:value-of select="question/text()" />

<xsl:value-of select="answer/text()" />
Peter <Nabble>
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Re: Spring MVC , Tiles and jstl/xml NullPointer Exception during transformation XML to HTM

Peter <Nabble>
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