Hi,
Can someone help me with this????
I need a solution for my problem...
What i want to do:
In a servlet(LookupCD) i create an instance of an Enterprise JavaBean(session bean).
The servlet generates an html-page with all info of an entitybean and also a link.
When i click on this link it starts up a new servlet but i want to pass that instance
of the sessionbean on to this new servlet(AddToBasket)
I know that this is possible with the request dispatcher, and to set Attribute on
request
So when i click the link the requestdispatcher must be called...
I have added some code of the lookupCD servlet.
Can you tell me what i have to change in this code-example???
Best Regards,
Jochen Vastmans
[EMAIL PROTECTED]
// CODE
public class LookupCompactDisc extends HttpServlet implements SingleThreadModel{
public void init(ServletConfig config) throws ServletException {
super.init(config);
initiate(); //creates an instance of the sessionbean - cs -> (CustSession)
context = config.getServletContext();
}
public void doGet(HttpServletRequest req, HttpServletResponse res){
//delagate to doPost
doPost(req,res);
}
public void doPost(HttpServletRequest req, HttpServletResponse res){
try {
String artist=req.getParameter("artist").toLowerCase();
String title=req.getParameter("title").toLowerCase();
// Vector with instances of the entitybean - (CompactDisc)
Vector compactdiscs=cs.lookupCompactDisc(artist,title);
// HERE A ADDED -cs- AS ATTRIBUTE
req.setAttribute("CustSession",(CustSession) cs);
// this will generate html
res.setContentType("text/html");
PrintWriter out = res.getWriter();
if(compactdiscs == null)
out.println("No item was found.");
else{
out.println("<html><head></head><body>");
for(int i=0;i<compactdiscs.size();i++){
Functions f = new Functions();
CompactDisc cd = (CompactDisc) compactdiscs.elementAt(i);
long id = cd.getID();
String pid = String.valueOf(id);
String cdname = f.toUpperCase(cd.getArtist());
String cdtitle = f.toUpperCase(cd.getTitle());
String cdrc = f.toUpperCase(cd.getRecordCompany());
double cdprice = cd.getPriceEuro();
String price = String.valueOf(cdprice);
out.println("<p><b>"+cdname+"</b><br>");
out.println(cdtitle+"<br>");
out.println(cdrc+"<br>");
out.println("Price: "+price+" euro</p>");
// HERE IS MY PROBLEM!!!!
// HERE IS THE LINK TO START THE OTHER SERVLET
// I want to pass the sessionbean -cs- on to AddToBasket
// when the link is clicked...
out.println("<a href="+"http://<my
host>/servlets.customer.AddToBasket?id="+pid+">Buy Item</a>");
// I think it should be
context.getRequestDispatcher("/servlet.customer.AddToBasket").forward(req,res);
}
out.println("</form></body></html>");
}
}
catch (Exception e) {
e.printStackTrace();
}
}
....
}
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