Unable to find matching navigation case with from-view-id '/login.xhtml' for action '#{admin.Validity}' with outcome 'failure'

Question

I can't get it to work. i get the following:

Unable to find matching navigation case with from-view-id '/login.xhtml' for action '#{admin.Validity}' with outcome 'failure'

this is the code i'm using:

HTML:

<div id="main" >

        <h:form id="login_form">
            <table>
                <tr>
                    <td><h:outputText value="User: " /></td>
                    <td><h:inputText id="username"
                            value="#{admin.username}" /></td>
                </tr>
                <tr>
                    <td><h:outputText value="Password: " /></td>
                    <td><h:inputSecret id="password"
                            value="#{admin.password}" /></td>
                </tr>
                <tr>
                    <td></td>
                    <td><h:commandButton value="Login" type="submit"
                            action="#{admin.Validity}" /></td>
                </tr>
            </table>
        </h:form>

    </div>

Admin.java

import java.io.Serializable;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;


@ManagedBean(name="admin")
@SessionScoped
public class Admin implements Serializable {
/**
 * 
 */
private static final long serialVersionUID = 1L;
Boolean authenticated;
String username;
String password;

public String getUsername() {
    return username;
}
public void setUsername(String username) {
    this.username = username;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}

public String Validity() {
    if(username.equals("admin") && password.equals("admin")) {
        authenticated=true;
        return "success";
    }   else   {
        authenticated=false;
        return "failure";
    }
}

}

faces-config.xml

<faces-config
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
    version="2.0">

<navigation-rule>
    <from-view-id>/login.xhtml</from-view-id>

    <navigation-case>
       <from-action>#{Admin.Validity}</from-action>
       <from-outcome>success</from-outcome>
       <to-view-id>/main.xhtml</to-view-id>
       <redirect/>
    </navigation-case>

    <navigation-case>
        <from-action>#{Admin.Validity}</from-action>
        <from-outcome>failure</from-outcome>
        <to-view-id>/login.xhtml</to-view-id>
    </navigation-case>
</navigation-rule>
</faces-config>

thank you. Y

Answer 1

Your managed bean is named #{admin},

@ManagedBean(name="admin")

however you attempted to access it as #{Admin} in the navigation case,

<from-action>#{Admin.Validity}</from-action>

so it definitely won't work. Java is case sensitive.

Fix the managed bean name in the navigation case accordingly:

<from-action>#{admin.Validity}</from-action>

---

Unrelated to the concrete problem, you've several minor design mistakes.

1. Managed bean name already defaults to the classname with 1st character lowercased. So your @ManagedBean(name="admin") can just be replaced by @ManagedBean.

   @ManagedBean
   @SessionScoped
   public class Admin implements Serializable {
   

2. Method names should not start with uppercase. Replace Validity() by validity(). Further there's also a grammatical/language mistake in the method name, but that's probably the language barrier. You'd normally have named it validate() or in this context better authenticate() or something.

3. Navigation cases are soo JSF 1.x. Since JSF 2.0 you can utilize the new "implicit navigation" feature. You can use the outcome value as mapping/extension-less view ID.

   public String authenticate() {
       if (username.equals("admin") && password.equals("admin")) {
           authenticated=true;
           return "main";
       } else {
           authenticated=false;
           return "login";
       }
   }
   

   This way you can remove the whole <navigation-rule> block altogether.

See also:

• Communication in JSF 2.0