Get a error message with <rich:message style="color:red" for="" id="" />

[phanthang1988]

Hello everybody!

I'm a student of a University of HCM city.

I would to display a error message in JSF page!

This error message is got in server!

Thereinafter, there are two file :

Student.java:

public String addStudent() throws Exception {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (StudentDB.checkUsername(username)) {
            FacesMessage message = new FacesMessage(
                    "Please check your Username again!");
            facesContext.addMessage("errUserName", message);
        } else {
            Student st = new Student(username, password, email, age, phone,
                    "user");
            boolean re = StudentDB.addStudent(st);
            FacesMessage mes;
            if (re)
                mes = new FacesMessage("Add Student is successfull!");
            else
                mes = new FacesMessage("Add Student is not successfull!");

            facesContext.addMessage("errUserName", mes);

        }
        return "addStudent";
    }

index.jsp:

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich">

<f:view>
        <h:form>

               .....

               <rich:message for="errUserName" style="color:red" />

               ....

     </h:form>
    </f:view>
</ui:composition>

I would to display a error message in JSF page!

Can you help me to discuss this problem?

Thank you very much!

ThangPhan!

[nbelaevski]

This forum space is to discuss development of the RichFaces project only. I'll move this thread to users' space.

[ilya_shaikovsky]

So, you do not see the message after action called?

which component has the errUserName id?

B.t.w. addMessage should get clientId as a parameter (considering naming containers e.g. form:input)

[phanthang1988]

Yes!

I could not get a error message after called a action!

Can you help me to fix that problem?

Thank you very much!

Thang!

[ilya_shaikovsky]

pay attention to the part of my quesiton related to clientId,.

E.g.:

<a4j:form id="form">
<rich:message for="input"/>"
<h:inputText id="input"/>
<a4j:commandButton action="#{userBean.action1}"/>
<a4j:commandButton action="#{userBean.action2}"/>
</a4j:form>

     public void action1() {
          FacesContext.getCurrentInstance().addMessage("input", new FacesMessage("New message 1!"));
     }
     public void action2() {
          FacesContext.getCurrentInstance().addMessage("form:input", new FacesMessage("New message 2!"));
     }

Only second button will works fine. And that works as it should according to JSF API.

[phanthang1988]

I have just run your code in my project!

But I could not get a error message in my JSF page!

This is my library:

And this is my web.xml file:

Can you help me find error in my web.xml? Or do my library have enough full yet?

Thanks!

ThangPhan!

[nbelaevski]

Client IDs may differ from Ilya's example if you are running in portlet environment. Check that you are using correct client ID when you are adding messages.

P.S. Try adding global message and check if it works.

Message was edited by: Nick Belaevski

[phanthang1988]

I have cheked Ilya's example!

But I did not run it successfully!

I think that Client IDs in Ilya's example did not have any different!

You can show me a different Client IDs in Ilya's example, can not you?

Can you give me a code demo about it?

Thank you very much!

ThangPhan!

[nbelaevski]

I'm sorry, but I didn't understand the question. Can you please explain it more?