How to pass a JavaBean from servlet to JSP?

Hi there,
I am working on a project that needs to handle quite a few client requests and I want to use the Front Controller pattern that is described in the J2EE pattern page.
The steps described in the front controller pattern is that:
1. A servlet (controller) process the client request.
2. It calls the appropriate cammand object and the cammand object gets the data from the data source and returns a JavaBean that contains the required data.
3. The servlet dispatch to the appropriate View (jsp page)
4. The JSP page displays the data in the JavaBean to the user.
However, I don't know how to pass the JavaBean from the servlet to the JSP page when the servlet forwards the control to the JSP page. Should I make the JavaBean with a request scope or higher? If so, how to uses it in the JSP page? Just refer by the ID of the JavaBean.
If any one knows there is an example or tutorial on how to use this pattern, please let me know.
Thank you !
Regards
Edmund

Could you please give more info? i tried to do this, but always get a "Class not found exception":
response$jsp.java:65: Class org.apache.jsp.TestBean not found. TestBean bean = null;
although the class TestBean (no package name => defalt package) is in the WAR file and the Servlet seems to instantiate it (otherwise an exception would occur sooner in the TestServlet code).
my JSP code is:
<%@ page language="java" info="Response page" %>
<jsp:useBean id="bean" class="TestBean" />
<%
TestBean bean2 = (TestBean) request.getAttribute("TheBean");
%>
<html>
<body>
Your value: <%= bean2.getValue() %><BR>
My val: <%= bean2.getNewValue() %><BR>
<P>
Date: <%= new Date() %>
<P>
Neuen Wert eingeben
</body>
</html>
--------------

Similar Messages

Please help how to pass a JavaBean from servlet to jsp?

Hi there,
I have got a dispatch servlet and I want the dispatch servlet to get the data and store it in a JavaBean before dispatching to the appropriate JSP page. However, I don't know how to pass the javabean to the JSP when the servlet forward the request to the JSP. Is ServletContext.setAttribute() the only way to pass the javabean to the JSP page?
Thank you very much!
Edmund

You can use HttpServletRequest.setAttribute(String name, Object javabean) to set the javabean into the HTTP request that you are forwarding to the JSP.
In the JSP, you can access the Javabean using request.getAttribute(String name) and cast it to the right class.

How to send the values from servlet to jsp

hi folks,
I need to send a lot of values from servlet to jsp so that i can display the values in jsp. Any sollution for this. Its very urgent.
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Hi lieo,
Can u send me the sample code for that.
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How to send a message from Servlet to JSP

Dear all,
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Hai ,
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here is the coding try it
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How to send object arraylist from servlet to jsp and display using jstl

Hi All....
I have a simple application and problem with it.
Once user logged in to system the user will redirect to LoginServlet.java controller.
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this is my login servlet.
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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Naishe wrote:
In your servlet,
request.setAttribute("account_list", account_list);
requestDispatcher.findForward("/your/display/jsp");
Good. I would only follow the Java naming conventions. E.g. accountList or accounts instead of the ugly PHP/C conventions.
In the JSP,
lst = (List< BankAccountDTO >)request.setAttribute("account_list");
for(BankAccountDTO b: lst){
populate your HTML tags or whatever
Wrong. 1) You need getAttribute() and 2) you should not use scriptlets. Use JSTL c:forEach, e.g.<table>
    <c:forEach items="${accounts}" var="account">
        <tr>
            <td>${account.id}</td>
            <td>${account.type}</td>
            <td>${account.description}</td>
        </tr>
    </c:forEach>
</table>To the topicstarter: for future JSP/JSTL related questions please use JSP/JSTL forum.
Here it is: [http://forums.sun.com/forum.jspa?forumID=45].

Passing database results from servlets to jsp

Hi everyone,
I have been trying to do what i thought would be a very simple thing...perform a search based on some criteria, and return the query result back to be displayed on a jsp page.
I have a jsp page where some dropdown lists are populated on entry to the page. This works fine. I want to (eventually!) perform the search based on what is selected in these dropdowns. When i click the search button, i invoke a servlet called "SearchInventory.java" which gets the result. I then store this result in an ArrayList object. I then set a bean property (bean name->SearchBean, property->inventory) from within the servlet, and redirect back to the search page. This works if the query only gets back one column.
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<%
SearchBean sbean=new SearchBean();
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%>
<%
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<%}%>
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Statement stmt=conn.createStatement();
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req.getSession(true).setAttribute("s_resbean",sbean);
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In the servlet, i have also tried the following method of redirecting back to jsp page:
String url="/SearchInventory.jsp";
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dispatcher.forward(req,res);
...this gives me a java.lang.ClassCastException
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U have instantiated a search bean and populated its member variable i.e Array list , and added that bean to the session as an attribute. Then again why u need to instantiate the search bean in the jsp page.
What has to be done.
In the jsp page instead of instantiating the search bean ,get the search bean from the session attribute.
statement to be removed : SearchBean bean=new SearchBean()
statement to be added : SearchBean bean = session.getAttribute("bean");

Pass data from servlet to jsp using sendRedirect

Hi,
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Is there any way i can send data using attributes(without using query string) using sendRedirect? Please let me know

sendRedirect is meant as a true redirect. meaning
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Brian

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Hi,
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Regarding how to pass the data from web dynpro to workflow

hi gurus,
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Regards
vijay

Check this [thread|SAP_WAPI_START_WORKFLOW;

How to pass the data from web dynpro to workflow.

hi gurus,
how to pass the data from web dynpro to workflow.
Regards
vijay

Hi
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data   lt_input_container TYPE TABLE OF swr_cont.
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Regards,
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Edited by: Arvind Patel on May 14, 2010 7:38 AM

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Dear Experts,
How to pass a parameter from one action1 in block1 to action2 in block2.
My Process Structure is as follows..
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Hello Rajesh!
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I have un report(mainreport) within a subreport(subreport).
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How to pass a JavaBean from servlet to JSP?

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