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Argument Error: One or more parameters are null.

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posted 18 years ago

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Hello,
I get the following error:

I use the Sun's RI (v 1.1) together with Jboss 4.0.3

Here is my backing bean:

package arcoiris;
 
import java.util.ArrayList;
import java.util.List;
import javax.faces.model.SelectItem;
 
public class SearchManagedBean {
    
    
    private String keyword;
    private String country;
    private int[] postcode;
    private boolean commmentExists;
    private int rating;
    private boolean websiteExists;
    
    //TEMP
    private List<SelectItem> availableCountries;
    private List<SelectItem> availablePostcodes;
    private List<SelectItem> availableRatings;
    
    public SearchManagedBean() {
        System.out.println("within constructor SearchManagedBean");
    }
    
    public String getKeyword() {
        return keyword;
    }
    
    public void setKeyword(String keyword) {
        this.keyword = keyword;
    }
    
    public String getCountry() {
        return country;
    }
    
    public void setCountry(String country) {
        this.country = country;
    }
    
   
    
    public boolean isCommmentExists() {
        return commmentExists;
    }
    
    public void setCommmentExists(boolean commmentExists) {
        this.commmentExists = commmentExists;
    }
    
    public int getRating() {
        return rating;
    }
    
    public void setRating(int rating) {
        this.rating = rating;
    }
    
    public boolean isWebsiteExists() {
        return websiteExists;
    }
    
    public void setWebsiteExists(boolean websiteExists) {
        this.websiteExists = websiteExists;
    }
    
    public List<SelectItem> getAvailableCountries() {
        List<SelectItem> countries = new ArrayList<SelectItem>();
        
        SelectItem si_1 = new SelectItem();
        SelectItem si_2 = new SelectItem();
        SelectItem si_3 = new SelectItem();
        
        si_1.setValue("ecuador");
        si_1.setLabel("ecuador");
        si_2.setValue("colombia");
        si_2.setLabel("colombia");
        si_3.setValue("peru");
        si_3.setLabel("peru");
        
        countries.add(si_1);
        countries.add(si_2);
        countries.add(si_3);
        return countries;
    }
    
    public void setAvailableCountries(List<SelectItem> countries) {
        this.availableCountries = availableCountries;
    }
    
    public List<SelectItem> getAvailablePostcodes() {
        List<SelectItem> postcodes = new ArrayList<SelectItem>();
        SelectItem si_1 = new SelectItem();
        SelectItem si_2 = new SelectItem();
        SelectItem si_3 = new SelectItem();
        
        si_1.setValue(75001);
        si_1.setLabel("75001");
        si_2.setValue(75002);
        si_2.setLabel("75002");
        si_3.setValue(75003);
        si_3.setLabel("75003");
        
        postcodes.add(si_1);
        postcodes.add(si_2);
        postcodes.add(si_3);
        
        return postcodes;
    }
    
    public void setAvailablePostcodes(List<SelectItem> availablePostcodes) {
        this.availablePostcodes = availablePostcodes;
    }
    
    public List<SelectItem> getAvailableRatings() {
        List<SelectItem> ratings = new ArrayList<SelectItem>();
        SelectItem si_1 = new SelectItem();
        SelectItem si_2 = new SelectItem();
        SelectItem si_3 = new SelectItem();
        
        si_1.setValue(1);
        si_1.setLabel("1");
        si_2.setValue(2);
        si_1.setLabel("2");
        si_3.setValue(3);
        si_1.setLabel("3");
        
        ratings.add(si_1);
        ratings.add(si_2);
        ratings.add(si_3);
        
        return ratings;
    }
    
    public void setAvailableRatings(List<SelectItem> availableRatings) {
        this.availableRatings = availableRatings;
    }
    
    public int[] getPostcode() {
        return postcode;
    }
 
    public void setPostcode(int[] postcode) {
        this.postcode = postcode;
    }
    
     public void performSearch(){
        System.out.println("here");
    }
 
   
    
    
}

Here is my jsp:

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
 
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
    
         <html>
             <head>
                 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
                 <title>JSP Page</title>
             </head>
             <body>
                 <f:view>
                     f:loadBundle basename="arcoiris.resources.bundle" var="bundle"/
                     h:panelGroup id="body"
                         <h:form id="searchForm">
                             <h:outputText id="keywordLabel" value="enter keyword"/>    
                             <h:inputText id="keywordField" value="#{SearchManagedBean.keyword}"/>
          
                             <h:outputText id="countryLabel" value="choose country"/>    
                             <h:selectOneListbox id="countryField" value="#{SearchManagedBean.country}">
                                 <f:selectItems id="availableCountries" value="#{SearchManagedBean.availableCountries}"/>
                             </h:selectOneListbox>
                 
                             <h:outputText id="postcodeLabel" value="choose postcode(s)"/>    
                             <h:selectManyListbox id="postcodeField" value="#{SearchManagedBean.postcode}">
                                 <f:selectItems id="availablePostcodes" value="#{SearchManagedBean.availablePostcodes}"/>
                             </h:selectManyListbox>
                         
                             <h:outputText id="commentExistsLabel" value="with comment"/>
                             <h:selectOneRadio id="commentExistsField" value="#{SearchManagedBean.commmentExists}"/>
                         
                             <h:outputText id="ratingLabel" value="rating"/>
                             <h:selectOneListbox id="ratingField" value="#{SearchManagedBean.rating}">
                                 <f:selectItems id="availableRatings" value="#{SearchManagedBean.availableRatings}"/>
                             </h:selectOneListbox>
                         
                         
                             <h:outputText id="websiteExistsLabel" value="with website"/>
                             <h:selectOneRadio id="websiteExists" value="#{SearchManagedBean.websiteExists}"/>
 
                             <h:commandButton value="next" action="#{SearchManagedBean.performSearch}"/>
                 
          
                         </h:form>
                     /h:panelGroup
                 </f:view>
                       
             </body>
         </html>

Here is my DD:

exception report:

e Exception report
 
message
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception
 
javax.servlet.ServletException: javax.servlet.jsp.JspException: Erreur dans les arguments: Un ou plusieurs param�tres peuvent ''tre nuls.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:844)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.welcomeJSF_jsp._jspService(org.apache.jsp.welcomeJSF_jsp:104)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
 
root cause
 
java.lang.NullPointerException: Erreur dans les arguments: Un ou plusieurs param�tres peuvent ''tre nuls.
com.sun.faces.renderkit.html_basic.HtmlResponseWriter.writeText(HtmlResponseWriter.java:357)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderOption(MenuRenderer.java:581)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:525)
com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:481)
com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:430)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:720)
javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:623)
javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:546)
com.sun.faces.taglib.html_basic.SelectOneListboxTag.doEndTag(SelectOneListboxTag.java:521)
org.apache.jsp.welcomeJSF_jsp._jspx_meth_h_selectOneListbox_1(org.apache.jsp.welcomeJSF_jsp:452)
org.apache.jsp.welcomeJSF_jsp._jspx_meth_h_form_0(org.apache.jsp.welcomeJSF_jsp:202)
org.apache.jsp.welcomeJSF_jsp._jspx_meth_f_view_0(org.apache.jsp.welcomeJSF_jsp:131)
org.apache.jsp.welcomeJSF_jsp._jspService(org.apache.jsp.welcomeJSF_jsp:92)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
 
note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.
Apache Tomcat/5.5

Can anyone help please? I am stuck and all I can say is that the exception report is not very helpful...

Thanks in advance,

Julien.
[ August 15, 2006: Message edited by: Julien Martin ]

Tim Holloway

Saloon Keeper

Posts: 28114

198

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posted 18 years ago

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This looked interesting. It might narrow the problem down to a specific part of the page.

Helpful hint: use the "id" attribute on your controls. Otherwise you get a useless randomly generated ID back in the error messages and it's much harder to locate the offending element.

I also started using Facelets, since one of their selling points was better JSF error messages. A nice bonus was it finally made Tiles useful to me!

The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.

You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.

Julien Martin

Ranch Hand

Posts: 384

posted 18 years ago

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Hello,
The problem comes from here:

I keep resetting the label of si_1 instead of setting it for si_2 and si_3.

Julien.

Rajibul islam

Greenhorn

Posts: 3

posted 15 years ago

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I got this error..

Argument Error: Parameter text is null
java.lang.NullPointerException: Argument Error: Parameter text is null
at com.sun.faces.renderkit.html_basic.HtmlResponseWriter.writeText(HtmlResponseWriter.java:545)
at org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRendererUtils.renderSelectOptions(HtmlRendererUtils.java:443)

At last I find out I have one drop down that is populated by one list. but i saw that one item of that list itemLabel is null. every time it tries to render but it cant. so I suggest make sure your itemLabel may not set by null value. for addintional info i gave here sample code..

<td >
<t:selectOneMenu id="drpGroup" forceId="true" value="#{editStore.store.zoneNumber}" styleClass="inp">
<s:selectItems value="#{editStore.zoneList}"
var="zone" itemValue="#{zone.number}" itemLabel="#{zone.name}" />
</t:selectOneMenu>

make sure "#{zone.name}" never contain any null value for not getting this error.

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