Hi all,
The use of all this vector and hashtable is not memory killer in JSP
processing???
Is't better to use directly the resultset in the JSP Page????
like:
......
rs = stmt.excuteQuery(strSql);
while(rs.next()){
%>
<tr>
<td><%= rs.getInt("ID") %></td>
</tr>
<%
}
.......
what of this method is better???
Why you use a servlet and not a JavaBean to get the ResultSet????
I use a JavaBean that connect to DB using connectDB() method, extract the
ResultSet using getRs() method and disconnect DB using disconnectDB()...
i write this simple Bean 'cause i think is better to use it... but know i'm
not sure... can you explain why you use this method to access DB???
Thanx, mark
> I think if you were more specific about your exact problem you might
> get a little more assistance. At any rate, below are a couple of code
> snipets. I use a servlet to perform the query and pass the result set
> to a JSP. I think the following will at least give you a very good
> start.
>
> In the servlet . . . .
>
> rs = stmt.executeQuery( sql );
> while (rs.next( ) ){
>
> Vector vector = new Vector();
> vector.add(new Integer(rs.getInt("var1")));
> vector.add(new Integer(rs.getInt("var2")));
> vector.add(rs.getString("var3"));
> vector.add(rs.getString("var1"));
> hashtable.put(rs.getString("var1"),vector);
>
> session.setAttribute("Name the hashtable", hashtable);
>
> then in the JSP . . . .
> <%
> Enumeration enum=null;
> Hashtable ht = new Hashtable();
> Vector vec = new Vector();
>
> try{
> ht =(Hashtable) session.getAttribute("Hashtable
> Name");
> enum = ht.keys();
> int i=0;
> }catch(Exception e){System.out.println(e.toString());}
> %>
> <%
> while(enum.hasMoreElements()){
> vec = (Vector) ht.get(enum.nextElement());
> %>
> <table>
> <tr>
> <td><%=vec.get(0).toString()%></td>
> <td><%=vec.get(1).toString()%></td>
> <td><%=vec.get(2).toString()%></td>
> </tr>
> <%
> }
> %>
>
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