How to specify the servlet in the ACTION field in FORM in jsp, html pages?

Question

I have problem when I return back to the page prova3.html from the servlet because in the address bar it give me this path:
http://192.168.161.209:8988/Workspace3-Project1-context-root/servlet/servlet/Servlet1
two times servlet/ why? and what I have to put in the action field?
This is my form in page prova3.html:
<form action="servlet/Servlet1" method="post" id="search" style="font: bold 80% Arial,sans-serif; color: #334d55;" >
<input type="hidden" name="pagina" value="1"/>
     user<input name="username" type="text" size="10" style="font-size: 12px;"/> 
password<input name="password" type="password" size="10" style="font-size: 12px;"/>
     <input name="login" type="submit" value="Login" style="font-size: 12px; font-family: Arial,sans-serif;"/>
</form>
The redirection form servlet to pages is:
private void toProvaPage(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
RequestDispatcher rd = getServletContext().getRequestDispatcher(
"/prova.jsp");
rd.forward(request, response);
private void toIndexPage(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
RequestDispatcher rd = getServletContext().getRequestDispatcher(
"/prova3.html");
rd.forward(request, response);
Thanks, but I can solve this problem.

Answer 1

This is my web.xml file where the mapping is specified, this is the thing that I can't understand.
<web-app>
<description>Empty web.xml file for Web Application</description>
<display-name>public_html</display-name>
<servlet>
<servlet-name>Servlet1</servlet-name>
<servlet-class>servlet.Servlet1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/servlet1</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>35</session-timeout>
</session-config>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
</web-app>
Thanks