html:cancel taglib not working in case of MultipartRequestWrapper

[nrmnrm]

If I cancel an action using taglib html:cancel on a jsp page it is not propagated to the action if coming from a multipart request, for standard requests its fine (see the two sceenshots from debug mode attached)

[nrmnrm]

HI Stefan,

can I help you in any ways to tackle that?

[ste-gr]

Hi @nrmnrm,

sorry for the long break. I don't have much time at the moment. Maybe you can find a solution and I can have a look at it and release it.

Greetings
Stefan

[nrmnrm]

Took me some hours, but I have found it :)
Please check AbstractPopulateActionForm.java
and change order in execute_ method, cancel needs to be executed last, as it requires population first to work:

protected boolean execute_(ActionContext actionCtx)
throws Exception {

    ActionConfig actionConfig = actionCtx.getActionConfig();
    ActionForm actionForm = actionCtx.getActionForm();

   

    // Is there a form bean for this request?
    if (actionForm == null) {
        return (false);
    }

    // Reset the form bean only if configured so
    if (isReset(actionCtx, actionConfig)) {
        log.debug("Reseting form bean '{}'",  actionConfig.getName());
        reset(actionCtx, actionConfig, actionForm);
    }

    // Populate the form bean only if configured so
    if (isPopulate(actionCtx, actionConfig)) {
        log.debug("Populating form bean '{}'", actionConfig.getName());
        populate(actionCtx, actionConfig, actionForm);
    }

// Always handle cancel last, as it needs populate first
    handleCancel(actionCtx, actionConfig, actionForm);
	
    return CONTINUE_PROCESSING;
}

Not sure when and why changing of the order was introduced but it definitely breaks html:cancel on mulitpart requests: I have rebuild with that change and it works fine for me now.

Best regards!

[nrmnrm]

I think this commit broke it "STR-286 and STR-1116: ActionForm populate and reset strategy"