-- http 405, can not execute servlet

[Sam]

Hi everybody

I can execute Servlet Exaxmple follow the command,
http://localhost:8080/servlet/SnoopServlet

I try to make a html file
<FORM ACTION="/servlet/SnoopServlet" METHOD="post">
<INPUT TYPE=SUBMIT VALUE="submit">
</FORM>

The Server can not accept the request.
REPLY: (405 Server does not support requested method)

However after I RELOAD the page, it is work well.
Why?? why RELOAD is necessary.

--Sam