How would I call a JavaScript function from a JSF Bean using RichFaces?

Question

For example in PrimeFaces there is

RequestContext.getCurrentInstance().execute("alert(123)")

And in OmniFaces there is

Ajax.onComplete("alert(123)")

I tried the pure JSF options I got from:

but neither of them works with Richfaces, specifically I'm either getting no alert in the response (using the first two options), or (using the last option) only the alert and an otherwise empty response with the follwing error in the browser console:

JSF AJAX Error:
description: "An empty response was received from the server. Check server error logs.",
responseCode: 200,
responseText: "<?xml version='1.0' encoding='UTF-8'?>?<partial-response><changes><eval><![CDATA[alert(123);]]></eva??l>",
responseXML: null

How can I just pass some JavaScript to the browser from Java code using RichFaces?

Thanks

What version of JSF are you using? Depending on the version, you can take advantage of newer response writing libs and just write your script directly to the ajax response — kolossus
– kolossus, Commented Apr 2, 2015 at 16:16

Makhiel · Accepted Answer · 2015-04-02 12:50:09Z

1

Do you need to directly call JavaScript from a bean?

RichFaces components have @oncomplete, it lets you set code to be executed when the request comes back from the server.

answered Apr 2, 2015 at 12:50

Makhiel

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4 Comments

user777 Over a year ago

Thanks, but yeah I really need this here from within a controller, not component specific. Isn't there some equivalent to RequestContext#getCurrentInstance()#execute() or some hack?

Makhiel Over a year ago

Well, the controller is still responding to a request from the page, isn't it? Anyway concerning the "empty response" error, that's not from RichFaces, by the looks of it the response you're creating is invalid XML. (</eva??l>, doesn't look good.) I've tried it and it works fine.

user777 Over a year ago

Oh can you please show me the code you were using? I tried the code suggested in stackoverflow.com/questions/17864326/… which uses eval and caused the invalid response

user777 Over a year ago

I tried it again with the quotes fixed, but when I keep the writer.endDocument(); writer.flush(); I don't get the entire response as expected by RichFaces (I don't execute this on a h:commandButton click but in the controller code during another request) and when I omit the writer.endDocument(); writer.flush(); I doesn't get insertert correctly into <partialresponse> tag but just prepended before the <?xml .. start of the response. In both cases I'm getting an erroneous response

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