view problems in a jsp page

[psychorav]

i'm just thinking about how i must "bind" a model to a view.
the model is like

public class Model implements Serializable{
	private String modelId;
	private String name;
	private Sbml sbml;
	private List listOfFunctionDefinition;
	private List listOfUnitDefinition;
	private List listOfCompartment;
	private List listOfSpecies;
	private List listOfParameter;
	private List listOfRule;
	private List listOfReaction;
	private List listOfEvent;
	private Long id;
	private int metaId;
	private String notes;
	private String annotation;

	public Model() {
	}
}

and i give the model from an controller to the view. there i want to
iterate threw the different listOfXXX to list the attributes. I tried this
by

       <table class="content" cellspacing="0" cellpadding="2" align="center">

          <tr width="100%"><th></th><th><b class="header1">Model</b></th><th></th><th></th><th></th><th></th><th></th><th></th></tr>

          <tr class="header2" align="center" width="100%">
          <td></td><td><b>Sbml</b></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
          <tr class="light" width="100%">
          <td></td><td><b>Level&#58;</b></td><td><c&#58;out value="$&#123;model.sbml.level&#125;"/></td><td><b>Version&#58;</b></td><td><c&#58;out value="$&#123;model.sbml.version&#125;"/></td><td></td><td></td><td></td></tr>

          <tr class="header2" align="center" width="100%">
          <td></td><td><b>Model</b></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
          <tr class="light" width="100%">
          <td></td><td><b>MetaId&#58;</b></td><td><c&#58;out value="$&#123;model.metaId&#125;"/></td><td><b>Annotation&#58;</b></td><td><c&#58;out value="$&#123;model.annotation&#125;"/></td><td><b>Notes&#58;</b></td><td><c&#58;out value="$&#123;model.notes&#125;"/></td><td></td></tr>
          <tr class="light" width="100%">
          <td></td><td><b>SId&#58;</b></td><td><c&#58;out value="$&#123;model.modelId&#125;"/></td><td><b>Name&#58;</b></td><td><c&#58;out value="$&#123;model.name&#125;"/></td><td><b></b></td><td></td><td></td></tr>

        <c&#58;if test="$&#123;model.listOfFunctionDefinition != null&#125;">
          <c&#58;forEach var="functionDefinition" items="$&#123;model.listOfFunctionDefinition&#125;">
              <tr class="header2" align="center" width="100%">
              <td></td><td><b>FunctionDefinition</b></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
              <tr class="light" width="100%">
              <td></td><td><b>MetaId&#58;</b></td><td></td><td><b>Annotation&#58;</b></td><td></td><td><b>Notes&#58;</b></td><td></td><td></td></tr>
          </c&#58;forEach>
        </c&#58;if>

but i get errormessages like

2004-11-02 12:06:19,823 ERROR [org.springframework.web.servlet.DispatcherServlet] - Could not complete request 
javax.servlet.ServletException: javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "test" with value "${model.listOfFunctionDefinition != null}": Unable to find a value for "listOfFunctionDefinition" in object of class "uk.ac.ebi.datamodel.Model" using operator "." (null)
	at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
	at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
	at org.apache.jsp.WEB_002dINF.jsp.model_jsp._jspService(model_jsp.java:124)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)

can anybody help me with my problem? thanks for response

[jc]

Perhaps a silly question, but do you have a method called 'getListOfFunctionDefinition' in your Model object?

jc

[psychorav]

public List getFunctionDefinition() {
return listOfFunctionDefinition;
}
public void setFunctionDefinition(List functiondefinition) {
this.listOfFunctionDefinition = functiondefinition;
}


perhaps i should rename the methods?

[psychorav]

thanks a lot ...... it was realy a stupid question

[cmgharris]

If your jsp is referencing

${model.listOfFunctionDefinition}

and your Model class has

public List getFunctionDefinition() {
return listOfFunctionDefinition;
}

that won't work.

As you suggest, you need to rename the methods.
You either need a method getListOfFunctionDefinition()
or you need to reference ${model.functionDefinition} in your jsp.

[cmgharris]

Sorry, my last post was redundant - wasn't looking carefully enough at the author of the previous post!

[uiuclab]

I'm getting a similar exception:

javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "value" with value "${model.UserProfile.AnnualSalary}": Unable to find a value for "AnnualSalary" in object of class "com.profile.impl.UserProfile" using operator "." (null)

Here is the code in the Controller that creates the model.

Map model = new HashMap();

com.profile.IUserProfile UserProfile = facade.getUserProfile();
model.put("UserProfile", UserProfile);
        
return new ModelAndView("GetUserProfile", "model", model);

My class heirarchy is as follows:

&#40;interface&#41;              IProfile       <------------      Profile
                            ^            &#40;implements&#41;         ^
                            |                                 |
                 &#40;inherits&#41; |                                 |   &#40;inherits&#41;
                            |                                 |
                            |                                 |
&#40;sub-interface&#41;       IUserProfile     <-------------    UserProfile
                                        &#40;implements&#41;

The getAnnualSalary() method is defined in the IProfile interface and implemented in the IUserProfile class.

The odd part is that I had earlier created a jsp page that implemented this but I can't seem to get it to work this time.

[uiuclab]

So apparently all the names of properties must begin with a lower case letter. If anyone else is having this problem, try that once.