Clicking h:commandLink causes Uncaught ReferenceError: mojarra is not defined

问题

I am aware of this post and I double checked all the possibilities there.

I'm using JSF 2.0 with Mojarra implementation on Glassfish 3.

I'm trying to use two simple <h:commandLink> tags to change the application language. This is the .xhtml page:

<!DOCTYPE html>
<html lang="en"  xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html">
<h:head>
    <title>
        <h:outputText value = "#{appMessage['page.welcome']}" />
    </title>

    <f:metadata>
        <f:event type = "preRenderView" listener = "#{sessionController.changeLanguage}" />
    </f:metadata>
</h:head>

<h:body>
    <h1><h:outputText value = "#{appMessage['text.slide.welcome']}" /></h1>

    <h:form id = "fm-language">
        <h:commandLink action = "#{sessionController.changeLanguage('en')}" value = "#{appMessage['link.english']}" />
        <h:commandLink action = "#{sessionController.changeLanguage('de')}" value = "#{appMessage['link.german']}" />
    </h:form>

</h:body>

This is the HTML code:

<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>The Maze Project</title>
    </head>
    <body>
        <h1>Welcome</h1>
        <form id="fm-language" name="fm-language" method="post" action="/maze/welcome.xhtml" enctype="application/x-www-form-urlencoded">
            <input type="hidden" name="fm-language" value="fm-language" />
            <script type="text/javascript" src="/maze/javax.faces.resource/jsf.js.xhtml?ln=javax.faces">
            </script>
            <a href="#" onclick="mojarra.jsfcljs(document.getElementById('fm-language'),{'fm-language:j_idt13':'fm-language:j_idt13'},'');return false">English</a>
            <a href="#" onclick="mojarra.jsfcljs(document.getElementById('fm-language'),{'fm-language:j_idt15':'fm-language:j_idt15'},'');return false">Deutsch</a>            
            <input type="hidden" name="javax.faces.ViewState" id="javax.faces.ViewState" value="8038443616162706480:-1387069664590476821" autocomplete="off" />
        </form>
</body>

When pressing a commandLink nothing at all happens. There is no request sended to the server and this following Java Script error is thrown:

mojarra is not defined

The bean methods are correctly called and work fine in the rest of the appliction.

回答1:

The source and generated HTML output looks fine, you have there a <h:head> in the JSF source (otherwise JSF wasn't able to auto-include any CSS/JS files), and the javax.faces:jsf.js script is present in the HTML output.

You said, you got a JS error that mojarra is not definied. That can only mean that the following auto-generated script

<script type="text/javascript" src="/maze/javax.faces.resource/jsf.js.xhtml?ln=javax.faces">
</script>

did not result in a valid response. That can in turn only mean that you've a Filter which is mapped on /* or *.xhtml which is restricting the jsf.js resource request in some way. Perhaps some homegrown authentication filter which is not doing its job entirely right. Try opening

http://localhost:8080/maze/javax.faces.resource/jsf.js.xhtml?ln=javax.faces

in your browser to see what it actually retrieved (or use the web developer tools to check the response). If it's indeed not the proper response and the problem is indeed in the Filter, then you probably need to rewrite it as such that it should continue the chain when the request URI starts with ResourceHandler.RESOURCE_IDENTIFIER.

E.g.

HttpServletRequest req = (HttpServletRequest) request;

if (req.getRequestURI().startsWith(req.getContextPath() + ResourceHandler.RESOURCE_IDENTIFIER)) {
    chain.doFilter(request, response); // Let it continue.
    return;
}

回答2:

Try to watch what happens in Firebug or something similiar, to see if there is actually a server communication. And since it is a commandLink, look if there are any javascript errors on the page.

You say, you don't get any INFO logs, so I think the request doesn't even get to your application.

(I don't see a closing html tag in your xhtml file, maybe you just didn't pasted it.)

来源：https://stackoverflow.com/questions/9248047/clicking-hcommandlink-causes-uncaught-referenceerror-mojarra-is-not-defined

标签

javascript

jsf

undefined

mojarra

commandlink