proxy configuration

Hi,
I want to config proxy for url like this http://server:port/xxx/yyy/zzz?ppp=123
xxx, yyy, zzz - all these variables are different in many urls for example

http://server:port/xxx1/y1yy/z2zz
http://server:port/test/yes/no
http://server:port/t1/y1/no

So I do forward for the url
forward:/my_name/xxx1/y1yy/z2zz
and get this log
INFO: /my_name/**: proxy GET uri: /appName/my_name -- http://server:port/?xxx1/y1yy/z2zz
but the right url must to be :
http://server:port/xxx1/y1yy/z2zz
I am trying to config the proxy like this but no lack :

<bean name="/my_name/**" class="xxx.ServletWrappingControllerExt">
        <property name="pathToStrip" value="/"/>
        <property name="servletClass" value="org.mitre.dsmiley.httpproxy.ProxyServlet"/>
        <property name="servletName" value="/"/>
        <property name="initParameters">
            <props>
                <prop key="targetUri">http://server:port</prop>
                <prop key="log">true</prop>
            </props>
        </property>
    </bean>

Can you suggest me how to do it ?
Thank you !

The reported behavior involves org.mitre.dsmiley.httpproxy.ProxyServlet with a ServletWrappingControllerExt bean and the targetUri and pathToStrip init parameters. Start by tracing how the /my_name/** mapping joins the incoming path to targetUri, then reproduce the logged request. Done means forwarding preserves /xxx1/y1yy/z2zz without the unexpected query-style separator.