tags:

views:

25

answers:

2
Q: 

Error Showing Data Base Data with Spring MVC

Hello !

Im so grateful of the help this community has offered on my learning and production experience, i come to you with another question, thank you in advance.

Ok, i have a Flex + Spring + Hibernate + Tomcat + Mysql application that has been in development for 3 years. So now i need to add some html views on them. So what i intend to do is plug the jstl/jsp part of the spring framework to the project.

All the logic of the application is called from the view (flex) through one controller called CatalogFacadeImpl. So what i intend to do is create a bunch of controllers that call the method of CatalogFacadeImpl and throws the results to the new jstl views.

Problem is i´m having trouble connecting the mvc Controller Class, ModelAndView data to the jsp/jstl file.

Right now, in tests im making, i have the controller call the CatalogFacadeImpl like this:

public class Welcome implements Controller {

    private String successView;
    public static final String MAP_KEY = "categorias";
    private CatalogFacadeImpl catalogFacadeImpl ;



    public ModelAndView handleRequest(
               HttpServletRequest request,
               HttpServletResponse response) throws Exception
       {

           List lista = catalogFacadeImpl.getUserList();

           return new ModelAndView(getSuccessView(),MAP_KEY,lista);

       }

    public String getSuccessView() {
        return successView;
    }

    public void setSuccessView(String successView) {
        this.successView = successView;
    }

    public void setCatalogFacadeImpl(CatalogFacadeImpl catalog){
        this.catalogFacadeImpl = catalog;
    }
}

Which when i debug it , lista brings the right objects with the data! so it works!

The view without jstl works fine also, however when i add the code that should bring me the ModelAndView Success info i get the error :( here is the code (note, the html code doen't show right because of the editor, but it´s and html with the jstl code added):

taglib prefix="c" uri="http://java.sun.com/jstl/core"  
<html>
  <head><title>Example :: Spring Application</title></head>
  <body>
    <h1>Example - Spring Application</h1>
    <p>Lista de usuarios</p>
  <c:forEach items="${lista}" var="lista">
                <tr>

                    <c:out value="${lista.userName}" />
                        <div></div>
                        </td>
                    </tr>
                </c:forEach>
  </body>
</html>

And error i get:

<html><head><title>Apache Tomcat/5.5.26 - Informe de Error</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>Estado HTTP 500 - </h1><hr noshade="noshade" size="1"><p><b>type</b> Informe de Excepción</p><p><b>mensaje</b> <u></u></p><p><b>descripción</b> <u>El servidor encontró un error interno () que hizo que no pudiera rellenar este requerimiento.</u></p><p><b>excepción</b> </p><pre>javax.servlet.ServletException: javax/el/ValueExpression
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:273)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:142)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:239)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1142)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:879)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:476)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:431)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre><p></p><p><b>causa raíz</b> </p><pre>java.lang.NoClassDefFoundError: javax/el/ValueExpression
    java.lang.Class.getDeclaredMethods0(Native Method)
    java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
    java.lang.Class.getDeclaredMethods(Class.java:1791)
    java.beans.Introspector$1.run(Introspector.java:1272)
    java.security.AccessController.doPrivileged(Native Method)
    java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1270)
    java.beans.Introspector.getTargetMethodInfo(Introspector.java:1136)
    java.beans.Introspector.getBeanInfo(Introspector.java:387)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    java.beans.Introspector.getBeanInfo(Introspector.java:220)
    java.beans.Introspector.&lt;init&gt;(Introspector.java:368)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    java.beans.Introspector.getBeanInfo(Introspector.java:220)
    java.beans.Introspector.&lt;init&gt;(Introspector.java:368)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    org.apache.jasper.compiler.Generator$TagHandlerInfo.&lt;init&gt;(Generator.java:3729)
    org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2132)
    org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1600)
    org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1442)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
    org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2216)
    org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2222)
    org.apache.jasper.compiler.Node$Root.accept(Node.java:457)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
    org.apache.jasper.compiler.Generator.generate(Generator.java:3321)
    org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:296)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:142)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:239)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1142)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:879)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:476)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:431)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

</pre><p></p><p><b>causa raíz</b> </p><pre>java.lang.ClassNotFoundException: javax.el.ValueExpression
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1363)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1209)
    java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
    java.lang.Class.getDeclaredMethods0(Native Method)
    java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
    java.lang.Class.getDeclaredMethods(Class.java:1791)
    java.beans.Introspector$1.run(Introspector.java:1272)
    java.security.AccessController.doPrivileged(Native Method)
    java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1270)
    java.beans.Introspector.getTargetMethodInfo(Introspector.java:1136)
    java.beans.Introspector.getBeanInfo(Introspector.java:387)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    java.beans.Introspector.getBeanInfo(Introspector.java:220)
    java.beans.Introspector.&lt;init&gt;(Introspector.java:368)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    java.beans.Introspector.getBeanInfo(Introspector.java:220)
    java.beans.Introspector.&lt;init&gt;(Introspector.java:368)
    java.beans.Introspector.getBeanInfo(Introspector.java:159)
    org.apache.jasper.compiler.Generator$TagHandlerInfo.&lt;init&gt;(Generator.java:3729)
    org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2132)
    org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1600)
    org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1442)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
    org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2216)
    org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2222)
    org.apache.jasper.compiler.Node$Root.accept(Node.java:457)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2166)
    org.apache.jasper.compiler.Generator.generate(Generator.java:3321)
    org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:296)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:142)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:239)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1142)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:879)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:476)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:431)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</pre><p></p><p><b>nota</b> <u>La traza completa de la causa de este error se encuentra en los archivos de diario de Apache Tomcat/5.5.26.</u></p><hr noshade="noshade" size="1"><h3>Apache Tomcat/5.5.26</h3></body></html>
+1  A: 

Smells like a classloader problem.

javax.el.ValueExpression only appeared in JSP 2.1, and Tomcat 5.5 only supports JSP 2.0 (see version matrix).

Something is clearly asking for javax.el.ValueExpression, though, and I suspect you've packaged a copy of the JSTL, JSP and/or Servlet libraries in your WAR somewhere - those libraries may be for a newer version of JSP, and they'll clash with Tomcat's own libraries. Have a look to see if that's the case, and if so, remove the library from the WAR.

Also, your JSTL declaration is out of date. It should be

http://java.sun.com/jsp/jstl/core

not

http://java.sun.com/jstl/core (this is the old, pre-JSP 2.0 URI).

skaffman  2010-08-24 14:52:38
A: 

Based on this forum, I think you might be bundling a conflicting servlet-api.jar with your code.

James Earl Douglas  2010-08-24 14:54:57
Hello, not sure what you mean, i do have the servlet-api.jar on my libraries, however, i don´t now how to relate it with the issue. Thank you
Ernest  2010-08-24 19:25:03

related questions

Java Time Zone is messed up
Eclipse on win64
Automate builds for Java RCP for deployment with JNLP
Why are professors or schools picking Java over C++ to teach to students?
Is there a real benefit of using J#?
Public/Popular Websites using JavaServer Faces
Why can't I use a try block around my super() call?
Accessing post variables using Java Servlets
Personal Linux web server
Is this really widening vs autoboxing?
How can I Java webstart multiple, dependent, native libraries?
Why can't I call toString() on a Java primitive?
How do I use Java to read from a file that is actively being written?
What code analysis tools do you use for your Java projects?
IllegalArgumentException or NullPointerException for a null parameter?
How do I configure and communicate with a serial port?
What is the best way to parse strings in Java
Getting started with a custom JXTA PeerGroup
Creating a custom button in Java
How to get started "writing" a code coverage tool?
Which Build-/Configuration Management Tool?
What is the difference between an int and an Integer in Java/C#?
What is the meaning of the type safety warning in certain Java generics casts?
How would you access Object properties from within an object method?
Converting CSV File to XML in Java