Use bean to pass dynamic parameter from one jspto another

Question

Hi Everyone
I am trying to use a bean to pass parameter instead of passing param through querystring . This is the situation:
in jsp1 I query a table and get the result listed, when I click every row of the record , I want some special parameters passed to jsp2 through bean, I found I can't get these param in jsp2 simply using getProperty method, It seems I must use form in jsp1 to activate jsp2 which use bean to pass param, Can I do it using linking archor? Because I don't want my params to list in the URL whem activate jsp2, I do not want to use the following format:
<a href="ViewQueryDetail.jsp?string_num=<%=string_num %>&depart=<%=depart %>&l_time=<%=l_time %>&title=<%=encode_title %>  target="_top"><%=title%>
If anybody had done this, kindly guide me.
Thanks in advance.
xufang</a>

Answer 1

Thanks for your kindly reply, I followed your direction and now I get java.lang.NullPointerException when I link to jsp2. My code is here:
jsp1:
<%
prjxnxx.db.BnParamDtxx MyBean = new prjxnxx.db.BnParamDtxx();
prjxnxx.db.BnParamDtxx MyBean1 = new prjxnxx.db.BnParamDtxx();
while(bean.next()) { %>
<tr>
<%!
int conflag ;
String depart ;
String l_time;
int dtnum ;
String title ;
String encode_title;
String content ;
//Object object_content ;
%>
<%
conflag = bean.getDataInt("conflag");
depart =bean.getDataString("depart");
l_time =bean.getDataString("l_time");
dtnum = bean.getDataInt("dtnum");
//String string_num =String.valueOf(dtnum);
title = bean.getDataString("title");
//request.setAttribute("title",title);
//request.setAttribute("depart",depart);
//request.setAttribute("l_time",l_time);
//request.setAttribute("dtnum",string_num);
%>
<%
//if(request.getAttribute("MB")==null){
MyBean.setDepart(depart);
MyBean.setTitle(title);
MyBean.setL_time(l_time);
MyBean.setDtnum(dtnum);
request.setAttribute("MB", MyBean);
MyBean1 = (prjxnxx.db.BnParamDtxx)request.getAttribute("MB");
depart = MyBean1.getDepart();
title = MyBean1.getTitle();
l_time = MyBean1.getL_time();
dtnum = MyBean1.getDtnum();
System.out.println(depart);
System.out.println(title);
jsp2:
<%!
String content ;
int conflag ;
String depart ;
String l_time;
int dtnum ;
String title ;
String query;
%>
<%
prjxnxx.db.BnParamDtxx MyBean2 = new prjxnxx.db.BnParamDtxx();
MyBean2 = (prjxnxx.db.BnParamDtxx)request.getAttribute("MB");
depart = MyBean2.getDepart();
title = MyBean2.getTitle();
l_time = MyBean2.getL_time();
dtnum = MyBean2.getDtnum();
%>
Everything is ok until I run the code
MyBean2 = (prjxnxx.db.BnParamDtxx)request.getAttribute("MB");
depart = MyBean2.getDepart();
Can you explain why I can use getAttribute in jsp1 right yet not in jsp2?
What is the difference between request.getAttribute and pagecontext.getRequest().getAttribute ?
I am alway grateful for there are someone like you who can help person when they are in need!
xufang