Detail: How to cache the user's input in a jsp page?

Thu, 04 Sep 2003 04:58:47 -0700 

Hi , ALL,
The following is my jsp page, store it into a file named "MyQUESTION.jsp" , pay 
attention for the "Subjuect" while u choosing the select.

<% 
   int item_num = 5;
   int row_num  = 1;
   if(request.getParameter("_rows")!=null){
      String rowstr = (request.getParameter("_rows"));
      try{
         row_num = Integer.parseInt(rowstr);        
      }
      catch(NumberFormatException ne){}
   }
   
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>

</head>
<center>
<body>

<table border="0" cellpadding="0" width="100%" cellspacing="0" bordercolor="#FFFFFF" 
height="384"> 
   <TR><TD align=right height=279>
      <FORM name=form1 action="/operator" method=post>

      <TABLE cellSpacing=1 width="100%" border=1 height="261" align="left">
        <TBODY>               
        <TR class="LGREY">
          <TD class="L" align=right width="25%"  >Subject&nbsp; : </TD>
          <TD class="L" width="75%"  >&nbsp;
              <INPUT tabIndex=1 maxLength=100 size=40 name=subject > 
          </TD> 
        </TR>
            
        <TR class="LGREY">
          <TD class="L" align=right width="100%"   colspan="2">
          <table cellSpacing=0 width="100%" border=1 align="left" 
bordercolor="#cccccc"> 
            <tr>
              <td width="25%" align="center">
              <select size="1" name=item_num 
ONCHANGE="location=this.options[this.selectedIndex].value;">
               <%for(int i=1;i<=5;i++){%>
               <option 
value="\MyQUESTION.jsp?_rows=<%=i%>"<%if(row_num==i){out.print("SELECTED");}%> 
>-<%=i%>-</option>
               <%}%>
                </select>
              
              
              </td>
              <td width="25%" align="center"><b>Project Detail</b></td>
              <td width="25%" align="center"><b>Quantity</b></td>
              <td width="25%" align="center"><b>Unit Price( S$)</b></td>
            </tr>
            <%for(int ii=0;ii<row_num;ii++){%>
            <tr>
              <td width="25%" align="center"  ><%=ii+1%></td>
              <td width="25%" align="center"  >
                  &nbsp;<INPUT tabIndex=2 maxLength=100 size=25 
name=project_detail_<%=ii+1%>></td>
              <td width="25%" align="center"  >
                  &nbsp;<INPUT tabIndex=2 maxLength=20 size=10 
name=quantity_<%=ii+1%>></td>
              <td width="25%" align="center" >
                  &nbsp;<INPUT tabIndex=2 maxLength=20 size=10 
name=unit_price_<%=ii+1%>></td>
            </tr>     
            
           <%}%>        
          </table>
        </TD></TR>            
        </TBODY>
      </TABLE></TD></TR>
      
  <TR>
    <TD class="L" align=right height=25>
      <P align=center><input type=submit value=" Create">
      <input type=submit value="  Clear  
"></P></TD></TR></TBODY></TABLE></FORM></CENTER>

</BODY>
</HTML>

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