Set parameters input automatically in my report and connection to my base

Question

Hello
this my programmes , it work it's ok ( see bottom of the page )
Now i have a rapport rpt with a input edit (example number customer )
I want by my file jsp that the number customer display automatically
in my rapport rpt ( variable string or integer or date) and after validate automaticcaly
and connection to my database automartically ( database oracle 8 user and paswword)
(by example with my url , i pass a parameters input and automatically i will see
the rapport rpt ) it's possible , How to make in jsp ?
thanks to help me
regards
Michel
Ps : Notes fresh  for the connection in my database oracle
i have modified CrystalReportViewer.jsp but i have an message
"Information is needed before this report can be processed " why ?
<%@ page import="com.crystaldecisions.report.web.viewer.*" %>
<%@ page import="com.crystaldecisions.sdk.occa.report.data.*" %>
<%@ page import="com.crystaldecisions.sdk.occa.report.reportsource.IReportSourceFactory2" %>
<%@ page import="com.crystaldecisions.sdk.occa.report.reportsource.IReportSource" %>
<%
CrystalReportViewer viewer = new CrystalReportViewer();
ConnectionInfos connInfos = new ConnectionInfos();
IConnectionInfo connInfo1 = new ConnectionInfo();
connInfo1.setUserName("user");
connInfo1.setPassword("pass");
viewer.refresh();
Object reportSource = session.getAttribute("reportSource");
viewer.setReportSource(reportSource);
viewer.setDatabaseLogonInfos(connInfos);
viewer.setEnableLogonPrompt(false);
viewer.processHttpRequest(request, response,getServletConfig().getServletContext(), out);
viewer.dispose();
%>
this programmes are ok (but now i search to display a variable on my report)
via url
http://pa-81b36a7e9d/businessobjects/enterprise11/desktoplaunch/opendoc/view_report.jsp?sdoc=axeriatest&user=Administrator&pass=&cms=pa-81b36a7e9d
CrystalReportViewer.jsp
<%@ page import = "com.crystaldecisions.report.web.viewer.*"%>
<%
     CrystalReportViewer viewer = new CrystalReportViewer();
     viewer.setName("CrystalReportViewer");
    viewer.setOwnPage(true);
    //Enable Active-X print mode. 
    viewer.setPrintMode(CrPrintMode.ACTIVEX);
    //Obtain report source of the report that the viewer will display.   
    Object reportSource = session.getAttribute("reportSource");
    viewer.setReportSource(reportSource);
    viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), null);
%>
view_report.jsp
<%
Applies to Versions:     XI
Creation Date:     Febuary 28 2005
Description:
                         This sample to demonstrates how to view a Crystal Report on demand in
    *                         the zero-client DHTML viewer. 
Author:               CW.
%>
<%@ page import = "com.crystaldecisions.sdk.occa.infostore.*,
                   com.crystaldecisions.sdk.plugin.desktop.common.*,
                   com.crystaldecisions.sdk.framework.*,
                   com.crystaldecisions.sdk.occa.security.*,
                   com.crystaldecisions.sdk.exception.SDKException,
                   com.crystaldecisions.sdk.occa.managedreports.IReportSourceFactory,
                   java.util.Locale,
                   com.crystaldecisions.sdk.occa.report.reportsource.IReportSource"
%>
<%@ include file = "logonform.jsp" %>
<%
     String cms             = request.getParameter("cms");
     String user             = request.getParameter("user");
     String pass             = request.getParameter("pass");
     String sdocName       = request.getParameter("sdoc");
     try {
         //If logon information is required, display the logonForm and exit.
          //Create a special logon form that requests 2 Report Names
          //(code for LogonForm class is included).
          LogonForm logonform = new LogonForm(response, request, LogonForm.REPORT_NAME);
          //if (logonform.display_if_needed()) return;
          // ici doit recuperer le nom du document
          logonform.reportname[0] =  sdocName ; //"diagramme";
          //Log in.
          IEnterpriseSession enterpriseSession = CrystalEnterprise.getSessionMgr().logon(user,pass,cms,"secEnterprise");
         //Grab the InfoStore from the httpsession
         IInfoStore infoStore = (IInfoStore)enterpriseSession.getService("", "InfoStore");
         //Query for the report object in the CMS.  See the Developer Reference guide for more information the query language. 
         IInfoObjects oInfoObjects = (IInfoObjects)infoStore.query("SELECT TOP 1 * " +
                                                                                 "FROM CI_INFOOBJECTS " +
                                                                            "WHERE SI_PROGID = 'CrystalEnterprise.Report' AND SI_INSTANCE=0 AND SI_NAME='" + logonform.reportname[0] + "'" );
         if (oInfoObjects.size() > 0) {
              //Retrieve the latest instance of the report
              IInfoObject oInfoObject = (IInfoObject) oInfoObjects.get(0);
              //Use the PS report factory to obtain a report source that will be processed on the Page Server.   
              IReportSourceFactory factoryPS = (IReportSourceFactory)enterpriseSession.getService("PSReportFactory");
              Object reportSource = factoryPS.openReportSource((oInfoObject), Locale.ENGLISH);
              session.setAttribute("reportSource", reportSource);
              //View the report in the standard DHTML viewer.        
              response.sendRedirect("CrystalReportViewer.jsp");
         else {
              out.println("Report " + logonform.reportname[0] + " not found.");     
    catch(SDKException sdkEx) {
          out.println(sdkEx);  
%>
logonform.jsp
<%!
/**************************** class LogonForm ***************************
This logon form is used to gather the logon information needed
to login to Enterprise
private class LogonForm {
     HttpServletResponse response;
     HttpServletRequest request;
     int num_reports_needed = 1;
     String[] reportname;
     public static final int NONE = 0;
     public static final int REPORT_NAME = 1;
     public static final int REPORT_NAME_X2 = 2;
Constructor - Save the response and request objects
     LogonForm(HttpServletResponse response, HttpServletRequest request)
          //this.response = response;
          //this.request = request;
Constructor with options - Add some optional boxes to request other
                           input from the user such as reportnames.
     LogonForm(HttpServletResponse response, HttpServletRequest request, int extra_requests) {
          this.response = response;
          this.request = request;
          switch (extra_requests) {
               case NONE:
                    break;
               case REPORT_NAME:
                    num_reports_needed = 1;
                    reportname = new String[1];
                    break;
               case REPORT_NAME_X2:
                    num_reports_needed = 2;
                    reportname = new String[2];
                    break;
%>

Answer 1

oh thanks but i have an error on this example  Viewingview_report_parameters
but where is my connection to my database in file jsp ?
thanks
windows
CMS  NAme  = MyCMS
user = myuser
pass = password
aut = enterprise
doc = my doc
ok
after enter values : i Put my values
ok
after click on button view report this is error
Etat HTTP 500 -
type Rapport d'exception
message
description Le serveur a rencontré une erreur interne () qui l'a empêché de satisfaire la requête.
exception
org.apache.jasper.JasperException
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
cause mère
java.lang.NullPointerException
     org.apache.jsp.opendoc.CrystalReportViewer_jsp._jspService(CrystalReportViewer_jsp.java:80)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note La trace complète de la cause mère de cette erreur est disponible dans les fichiers journaux de Apache Tomcat/5.0.27.
Apache Tomcat/5.0.27