The Issue: We have a Java web application, based on Apache MyFaces Trinidad. We

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Asked: May 20, 20262026-05-20T12:12:03+00:00 2026-05-20T12:12:03+00:00

The Issue: We have a Java web application, based on Apache MyFaces Trinidad. We

0

The Issue:

We have a Java web application, based on Apache MyFaces Trinidad. We are facing some problems when trying to partial submit (that’s it: via Ajax) a form, when a field contains some special characters, such as Ñ, á, etc.

When we write a value like camión at the text field, the resulting message is Hola cami (it drops the special char, and the next one).

The application server we are runnign our code at is IBM WebSphere AS 7.0.

This behaviour has been observed on IExplorer and Firefox browsers, all run from Windows XP Professional (spanish version).

Main code snippets:

UPDATE: based on lkdg‘s answer (thanks), I have updated the JSP and resulting HTML code snippets.

JSP Page Code:

<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>  
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>  
<%@ taglib uri="http://myfaces.apache.org/trinidad" prefix="tr" %>  
<%@ taglib uri="http://myfaces.apache.org/trinidad/html" prefix="trh" %>  

<f:view>  
    <tr:document>  
        <trh:head title="Prueba de AJAX con todas las Cabeceras">  
           <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>  
        </trh:head>  

        <tr:form>
        <tr:panelHorizontalLayout halign="left">
            <f:facet name="separator">
                <tr:spacer width="10" height="5"/>
            </f:facet>

            <tr:inputText id="elCampo" label="Your name" value="#{commandButtonBean.name}"
                          requiredMessageDetail="Name is required"

                          />
            <tr:commandButton id="sayHello" text="Say Hello"
                              partialSubmit="true" 
                              action="#{commandButtonBean.sayHello}"
                              />
        </tr:panelHorizontalLayout>

        <tr:spacer height="15px"/>
        <tr:outputText value="#{commandButtonBean.message}" partialTriggers="sayHello" 
                       inlineStyle="font-weight: bold;"/>
        </tr:form>
    </tr:document>  
</f:view>

This is the resulting HTML output (removed some empty lines):

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--Start: org.apache.myfaces.trinidad.Document["j_id_jsp_1876237926_1"]--><html dir="ltr" lang="es-ES">
  <head>
    <meta name="generator" content="Apache MyFaces Trinidad">

    <link rel="stylesheet" charset="UTF-8" type="text/css" href="/ModuloTrinidadPilotoWeb/adf/styles/cache/bigfont-desktop-nur72r-ltr-gecko.css">
  </head>
  <!--Start: org.apache.myfaces.trinidad.Document["j_id_jsp_1876237926_1"]-->
  <body onload="_checkLoad()" onunload="_checkUnload(event)"><script type="text/javascript">var _AdfWindowOpenError='Se ha detectado un bloqueo de ventana emergente en el explorador. Estos bloqueos interfieren con el funcionamiento de esta aplicación. Desactívelo o permita elementos emergentes desde esta dirección.';</script><script type="text/javascript" src="/ModuloTrinidadPilotoWeb/adf/jsLibs/Common1_2_10.js"></script><!--Start: org.apache.myfaces.trinidad.Document["j_id_jsp_1876237926_1"]--><div id="tr_pprBlockingDiv" onclick="return _pprConsumeClick(event);" style="position:absolute;left:0;top:0;width:0;height:0;cursor:wait;" onkeydown="return false;" onkeyup="return false;" onmousedown="return false;" onmouseup="return false;" onkeypress="return false;"></div><a name="top"></a>

    <noscript>Esta p&aacute;gina utiliza JavaScript y necesita un explorador activado para JavaScript. Su explorador no est&aacute; activado para JavaScript.</noscript>
    <!--Start: org.apache.myfaces.trinidad.Head["j_id_jsp_1876237926_2"]-->
    <head>
      <title>Prueba de AJAX con todas las Cabeceras</title>

      <meta name="generator" content="Apache MyFaces Trinidad">

      <link rel="stylesheet" charset="UTF-8" type="text/css" href="/ModuloTrinidadPilotoWeb/adf/styles/cache/bigfont-desktop-nur72r-ltr-gecko.css">

           <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>  
        </head>

    <!--Start: org.apache.myfaces.trinidad.Form["j_id_jsp_1876237926_3"]-->
    <form id="j_id_jsp_1876237926_3" name="j_id_jsp_1876237926_3" style="margin:0px" method="POST" onkeypress="return _submitOnEnter(event,'j_id_jsp_1876237926_3');" action="/ModuloTrinidadPilotoWeb/jsp/sgtc/pruebaAjax2.faces"><!--Start: org.apache.myfaces.trinidad.Panel["j_id_jsp_1876237926_4"]--><table cellpadding="0" cellspacing="0" border="0" summary=""><tr>
          <td><!--Start: org.apache.myfaces.trinidad.Input["elCampo"]--><table id="elCampo__xc_" class="af_inputText" cellpadding="0" cellspacing="0" border="0" summary=""><tr>
                <td class="af_inputText_label" nowrap><span id="elCampo::icon" style="display:none;"><a name="_msgAnc_elCampo" title="Error" class="AFErrorIconStyle">X</a></span>&nbsp;<label for="elCampo">Your name</label></td>

                <td valign="top" nowrap class="AFContentCell"><!--Start: org.apache.myfaces.trinidad.Input["elCampo"]--><input id="elCampo" name="elCampo" class="af_inputText_content" size="30" type="text"></td>
              </tr><tr>
                <td></td>

                <td class="AFComponentMessageCell"><!--Start: org.apache.myfaces.trinidad.Input["elCampo"]--><span id="elCampo::msg" class="OraInlineErrorText"></span></td>

              </tr></table></td>

          <td><!--Start: org.apache.myfaces.trinidad.Object["j_id_jsp_1876237926_5"]--><img src="/ModuloTrinidadPilotoWeb/adf/images/t.gif" alt="" width="10" height="5"></td>

          <td><script type="text/javascript">var _pprUpDatemode=false;function _adfspu(f,v,e,s,o){_pprUpdateMode=true;if(!o)o=new Object();if(e)o.event=e;if(s)o.source=s;_submitPartialChange(f,v,o);}</script><!--Start: org.apache.myfaces.trinidad.Command["sayHello"]-->
            <button id="sayHello" name="sayHello" type="button" onclick="TrPage._autoSubmit('j_id_jsp_1876237926_3','sayHello',event,1);return false;" class="af_commandButton">Say Hello</button>
          </td>
        </tr></table><!--Start: org.apache.myfaces.trinidad.Object["j_id_jsp_1876237926_8"]--><div style="margin-top:15px"></div><!--Start: org.apache.myfaces.trinidad.Output["j_id_jsp_1876237926_9"]--><span id="j_id_jsp_1876237926_9" style="font-weight: bold;"></span><input type="hidden" name="org.apache.myfaces.trinidad.faces.FORM" value="j_id_jsp_1876237926_3"><!--Start: org.apache.myfaces.trinidad.Form--><span id="tr_j_id_jsp_1876237926_3_Postscript"><input type="hidden" name="javax.faces.ViewState" value="!-4fd3ee50"><script type="text/javascript">function _j_id_jsp_1876237926_3Validator(f,s){return _validateInline(f,s);}var j_id_jsp_1876237926_3_SF={};</script></span><script type="text/javascript">_submitFormCheck();</script></form>
  </body>

  <!--Created by Apache Trinidad (Apache MyFaces Trinidad API - 1.2.10/Apache MyFaces Trinidad Impl - 1.2.10), skin:bigfont.desktop (bigfont)--></html>

The CommandButton bean code:

public class CommandButtonBean {
    public String name;
    public String message;

    public String sayHello(){
        message = "Hola " + name;
        return "";
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

}

Of course, the command button is configured at faces-config.xml (I think that this snippet is not relevant).

Attempted fixes so far:

We have checked the charset encoding at different levels (application, JVM, etc). It seems to be aligned between the differen layers.

Also, we have included at web.xml the next context parameter:

<context-param>
    <param-name>PARAMETER_ENCODING</param-name> 
    <param-value>UTF-8</param-value> 
</context-param>

We have logged what is the value
passed as an argument to the
setName method, for if it could be
an error at writing the response. The
value passed is already wrong.
We have tried to write a web Filter,
to set the request charset to UTF-8 (just in
case, you know). But when logging the
parameter values at the filter, we
got the wrong value too.
At last we removed the
partialSubmit attribute of the
submit button, and got the right
value. But this won’t really fix our
problem, as we are trying to
implement some inline searches and
validations (we don’t want to repaint
the whole page).

So, when we send a normal POST message, we get the expected result, but when we try to use the Ajax approach, we loose these special characters.

And, at last, The Question:

Have you any suggestions on how to fix this issue?

Thank you very much.

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1 Answer

Editorial Team · Answer 1 · 2026-05-20T12:12:04+00:00

This is a known issue with trinidad&WAS: http://www.mail-archive.com/dev@myfaces.apache.org/msg46298.html . You will have to make a small modification to two js files, you need to encode the sent characters (the solution there by Naveen Ravindra works). Edit these files:

trinidad-impl-XXX.jar\META-INF\adf\jsLibsDebug\xhr\XMLRequest.js
trinidad-impl-XXX.jar\META-INF\adf\jsLibs\xhr\XMLRequest.js

Add this new function to them (paste this to the beginning of the js:

function encodeCharacters(string) {
        string = string.replace(/\r\n/g, "\n");
    var utftext = "";
    for ( var n = 0; n < string.length; n++) {
        var c = string.charCodeAt(n);
        if (c < 128) {
            utftext += String.fromCharCode(c);
        } else if ((c > 127) && (c < 2048)) {
            utftext += String.fromCharCode((c >> 6) | 192);
            utftext += String.fromCharCode((c & 63) | 128);
        }   
        else {  
            utftext += String.fromCharCode((c >> 12) | 224);
            utftext += String.fromCharCode(((c >> 6) & 63) | 128);
            utftext += String.fromCharCode((c & 63) | 128);
        }
    }
    return utftext;
}

Change the TrXMLRequest.prototype.send function in the same js. In it change

xmlhttp.send(content); to xmlhttp.send(encodeCharacters(content)); in the debug version, and
a4.send(a3); to a4.send(encodeCharacters(a3)); in the production version.

Tested, works in WAS 7.0.0.11.

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The Issue: We have a Java web application, based on Apache MyFaces Trinidad. We

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