Right way to jump between pages?

Question

I am in trouble to find the correct way to jump between pages,I have a page alluser.jsp,
in which all usergroups and users are displayed,corresponding to every user's item,I
place a link to delete this user,as below:
<a href="removeuser.jsp?userName=<%=userName%>">delete</a>
in removeuser.jsp,after I have completed the task of deleting this user from database,I
want the client go back to alluser.jsp,where he can find that user has been removed,
but I have tried three different ways,the first,
response.sendRedirect("alluser.jsp"),but It displays the old page,seemingly not following
the logic of alluser.jsp:to fetch data from NOW_BE database,but just displays from the browser's
cache;
the second,
<jsp:forward page="alluser.jsp"/>,but it will forward the parameter userName onto the
alluser.jsp,which doesn't need any parameters,as result,in browser's location bar,I see
..../alluser.jsjp?userName=...,now I cannot refresh the page,because the browser will
prompt me whether to resend the request info to refresh the page;
the third,I simply use
javascript:location="alluser.jsp",but I got the same result as the first approach
now I have been driven crazy,on earth what is the good way to do these?
Please help me,thanks in advance

Answer 1

Instead of having 2 jsp forms, the processing can be done in the same form - "alluser.jsp".
The code below explains as to how this can be implemented.
The ResultSet gets updated without the deleted user.
<%
String message="";
String userid =request.getParameter("USER_ID");
if(userid == null)
userid="";
else
int delusercon=user.del_user_con(userid);
int deluser=user.del_user(userid);
String username=request.getParameter("username");
message=username + " "+ "has been cancelled!";
list=user.get_pendinguser();
}%>
<form>
<%=message%>
<%while(list.next()){%>
<table><tr><td>
<div align="center"><a href="alluser.jsp?USER_ID=<%=list.getString( userid)%>&username=<%list.getString(username)%>">
<B><FONT FACE="Verdana, Arial, Helvetica, sans-serif" SIZE="2">
Deny</FONT></B></a></div>
</td></tr></table>
<%}%>
</form>
Hope this helps!!