Error with JSP: Doesn't work with my object, it does with a String

I'm reediting: It's a Maven project and I have to add a external file to the repository.

I'm explaining what happened. The class Nodo had a method that uses JDOM library, and it was failing. That's why it worked with a string, a string doesn't use that library. Now I have supressed that method and it works, but I still need that method. Do you know how can I make it work? As I say down here, I use Springsource Tool Suite (eclipse) and I had added the jdom.jar file as a external jar in the build path.

Hi guys,
I hope you can help me. I'm creating an easy MVC web app with Spring Framework (using STS) and I'm having problems with JSP.

I have a jsp page where I want to show some properties of my object "Nodo", but I'm getting this error:

org.apache.jasper.JasperException: Ha sucedido una excepción al procesar la página JSP /WEB-INF/views/nodoak.jsp en línea 15

12: </head>
13: <body>
14: 	<c:forEach items="${nodoak}" var="nodo">
15: 		<c:out value="${nodo.testua}"/>
16: 	</c:forEach>
17: 	<p>probatzen</p>
18: </body>

Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:567)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:456)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

causa raíz

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/jdom/JDOMException
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:911)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:840)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspService(nodoak_jsp.java:93)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

causa raíz

java.lang.NoClassDefFoundError: org/jdom/JDOMException
	java.lang.Class.getDeclaredMethods0(Native Method)
	java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
	java.lang.Class.privateGetPublicMethods(Class.java:2547)
	java.lang.Class.getMethods(Class.java:1410)
	java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1284)
	java.beans.Introspector.getTargetMethodInfo(Introspector.java:1158)
	java.beans.Introspector.getBeanInfo(Introspector.java:408)
	java.beans.Introspector.getBeanInfo(Introspector.java:167)
	javax.el.BeanELResolver$BeanProperties.<init>(BeanELResolver.java:209)
	javax.el.BeanELResolver.property(BeanELResolver.java:307)
	javax.el.BeanELResolver.getValue(BeanELResolver.java:85)
	javax.el.CompositeELResolver.getValue(CompositeELResolver.java:67)
	org.apache.el.parser.AstValue.getValue(AstValue.java:169)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
	org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:985)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspx_meth_c_005fout_005f0(nodoak_jsp.java:152)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspx_meth_c_005fforEach_005f0(nodoak_jsp.java:119)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspService(nodoak_jsp.java:82)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

causa raíz

java.lang.ClassNotFoundException: org.jdom.JDOMException
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1523)
	java.lang.Class.getDeclaredMethods0(Native Method)
	java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
	java.lang.Class.privateGetPublicMethods(Class.java:2547)
	java.lang.Class.getMethods(Class.java:1410)
	java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1284)
	java.beans.Introspector.getTargetMethodInfo(Introspector.java:1158)
	java.beans.Introspector.getBeanInfo(Introspector.java:408)
	java.beans.Introspector.getBeanInfo(Introspector.java:167)
	javax.el.BeanELResolver$BeanProperties.<init>(BeanELResolver.java:209)
	javax.el.BeanELResolver.property(BeanELResolver.java:307)
	javax.el.BeanELResolver.getValue(BeanELResolver.java:85)
	javax.el.CompositeELResolver.getValue(CompositeELResolver.java:67)
	org.apache.el.parser.AstValue.getValue(AstValue.java:169)
	org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
	org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:985)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspx_meth_c_005fout_005f0(nodoak_jsp.java:152)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspx_meth_c_005fforEach_005f0(nodoak_jsp.java:119)
	org.apache.jsp.WEB_002dINF.views.nodoak_jsp._jspService(nodoak_jsp.java:82)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

---------------------------------
NODO CLASS

-------------------------------------
CONTROLLER

-------------------------------------
WEB.XML

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<display-name>sim</display-name>

<servlet>
    <servlet-name>sim</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>/WEB-INF/spring/sim-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

<servlet-mapping>
    <servlet-name>sim</servlet-name>
    <url-pattern>*.htm</url-pattern>
  </servlet-mapping>

<welcome-file-list>
   		 <welcome-file>
     		 /WEB-INF/views/index.jsp
   		 </welcome-file>
  	</welcome-file-list>
<jsp-config>
  <jsp-property-group>
    <url-pattern>*.jsp</url-pattern>
    <el-enabled>true</el-enabled>
    <scripting-enabled>true</scripting-enabled>
  </jsp-property-group>
</jsp-config>
</web-app>

--------------------------------------------------
SIM-SERVLET.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:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

<context:component-scan base-package="com.companyname.springapp.web" />

----------------

I hope it's a silly error and you can help me, it would be great for me. Thank you.

Of course the class Nodo have setters and getters:

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/jdom/JDOMException

Looks like you are missing the jar file for JDOM.

Bear Bibeault wrote:

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/jdom/JDOMException

Looks like you are missing the jar file for JDOM.

I've got it in the build path, I added as a external JAR with Eclipse.

I use JDOM for extracting information from an .xml document in a method in the Nodo class. I tried supressing it and it works! So I have to do something with that .jar because in the moment of the building something goes wrong. Can someone help me?

Bear Bibeault, thank you very much, really.

You should have mentioned this is an IDE setup issue. Moved to the IDEs forum.