jboss 5上的JAAS Web安全性

<application-policy name=\"MyPolicy\">
<authentication>
    <login-module flag=\"required\"
        code=\"org.jboss.security.auth.spi.DatabaseServerLoginModule\">
        <module-option name=\"dsJndiName\">java:/espritDS</module-option>
        <module-option name=\"principalsQuery\">SELECT password FROM users WHERE
            username=?</module-option>
        <module-option name=\"rolesQuery\">SELECT groupname FROM groups WHERE
            username=?</module-option>
    </login-module>
</authentication>

<!-- Security  -->
<security-constraint>
    <web-resource-collection>
        <web-resource-name>secret</web-resource-name>
        <url-pattern>/faces/secret/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>admin</role-name>
    </auth-constraint>
</security-constraint>
<login-config>
    <auth-method>FORM</auth-method>
    <form-login-config>
        <form-login-page>/faces/login.jsp</form-login-page>
        <form-error-page>/faces/loginError.jsp</form-error-page>
    </form-login-config>
</login-config>

<security-role>
    <role-name>admin</role-name>
</security-role>

<jboss-web>
<!-- A security domain that restricts access -->
<security-domain>java:/jaas/MyPolicy</security-domain>
</jboss-web>