Several messages programmatically in JSF

StackOverflow https://stackoverflow.com/questions/20820155

  •  22-09-2022
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Question

I've got two places to put messages in my website. Messages related with an aside div and messages related with the main container.

I'm using this two h:messages simultaneusly within the same page (it's forms have prependId=false and no id so messages ids are not appended with others):

<h:messages id="container-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message" globalOnly="false" />

<h:messages id="aside-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message" globalOnly="false" />

Then inside my Java code I'm using this to print some messages:

facesContext.addMessage("container-messages", new FacesMessage(FacesMessage.SEVERITY_INFO, "one message", null));

The first problem is that this works, but it prints the message in both and not only in the container-messages.

Later I replaced with :

<h:message id="container-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message"/>

<h:message id="aside-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message" />

and tried also:

<h:message for="container-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message"/>

<h:message for="aside-messages" infoClass="info-message" warnClass="warn-message" errorClass="error-message" />

but in both cases it doesn't show anything.

Any ideas?

Was it helpful?

Solution

The h:messages is for so-called global messages which are unrelated to a specific component and therefore the for attribute is not allowed here.

The h:message is for messages related to a specific component, therefore the for attribute is required, this means you need a component to bind to.

To reach your goal you can use two h:message elements bound to some component (e.g. an empty h:grapicImage) in the following way:

    <h:graphicImage id="someID" />
    <h:message for="someID" id="container-messages" infoClass="info-message" 
         warnClass="warn-message" errorClass="error-message"/>
    <div>
         stuff
    </div>
    <h:message for="someID" id="aside-messages" infoClass="info-message" 
         warnClass="warn-message" errorClass="error-message" />

Adding the messages in the way you already described:

    facesContext.addMessage("container-messages", new 
         FacesMessage(FacesMessage.SEVERITY_INFO, "message1", null));
    facesContext.addMessage("aside-messages", new 
         FacesMessage(FacesMessage.SEVERITY_INFO, "message2", null));

See also:

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