Java - Basic Authentication on Tomcat 7

@$ cd /usr/local/tomcat/conf
@Add the following this on the web.xml
<security-constraint>
        <web-resource-collection>
                <web-resource-name>
                        My Protected WebSite
                </web-resource-name>
                <url-pattern> /* </url-pattern>
                <http-method> GET </http-method>
                <http-method> POST </http-method>
        </web-resource-collection>
        <auth-constraint>
                <!-- the same like in your tomcat-users.conf file -->
                <role-name> aname </role-name>
        </auth-constraint>
</security-constraint>
<login-config>
        <auth-method> BASIC </auth-method>
        <realm-name>  Basic Authentication </realm-name>
</login-config>
<security-role>
        <description> aname role </description>
        <role-name> aname </role-name>
</security-role>
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 @tomcat-users.xml
  <role rolename="manager-gui"/>
  <role rolename="admin-gui"/>
  <role rolename="aname" />

  <user username="tomcat" password="pwd" roles="manager-gui,admin-gui"/>
  <user username="aname" password="pwd" roles="aname"/>