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Bhardwaj Shweta

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since Mar 29, 2011

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Recent posts by Bhardwaj Shweta

session management in struts2

hello!!

I want to implement session management in struts2.

//Action Class

Now I am not getting what should i write in jsp page to retrieve the value of session object.
please help..

or if there is any other way for session management please let me know.

thanks in advance:)

13 years ago

using stylesheet in struts2

correction in line 19:
<s:div id="logo"></s:div>

13 years ago

using stylesheet in struts2

hello,

I am using stylesheet in jsp page(struts2) but images as well as desired effects are not getting reflected.I have addedd all the libraries.please help.

//home.jsp

//css file
#logo:{margin-top:20%;}

#footer:{margin-top:60%;}

13 years ago

Storing resultset into arraylist

Thank you guys for helping me out, i will try this

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

@ Mohamed
Thanks for replying:)
umm can you please give some example.

if i have <input type="text" name="pname" id="pname" size="25" value="<%=##%>" disabled>
<input type="text" name="remarks" size="25" value="<%=##%>" disabled>
how should i retrieve respective value from list object??

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

In order to use JSTL
i have added <%@taglib prefix="c" uri="http://java.sun.com/jstl/core"%>

but its showing and error:
"The absolute uri:http://java.sun/jstl/core cannot be resolved in either web.xml or the jar files deployed with application"
i have already added two jar files
jstl-impl-1.2.jar and jstl-api-1.2.jar

how to resolve it please help

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

in between i am learning how to use JSTL and EL.

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

@vijitha

I have changed my code to

and servlet is working fine:)
but in my jsp page its showing value of String s6 = rs.getString("priority") in all the fields..
error is in my logic
// jsp

when the control gets out of the loop mystring holds value of s6. how to fix it

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

here is my complete code:
//jsp page

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<%@ page import = "java.sql.*" %>
<%@ page import = "java.util.*" %>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<link href=".\css1.css" rel="stylesheet" type="text/css" />
<title>Projects Information</title>
</head>
<body style ="background:url(images/wall.JPG) repeat-x #F6F4E4;">
<h2>PR Tracker </h2>
<div id="form">
<form name="projectform" method="post" action="operationservlet" >
<table >
<%
ArrayList arr = (ArrayList) session.getAttribute("list");
String myString ="";
if(arr.isEmpty()==false)
{
for(int i = 0; i < arr.size(); i++)
{
myString = (String)arr.get(i);
}
}
else
{
System.out.println("Array is empty");
}
%>
<tr>
<td>
project Name
</td>
<td>
<input type="text" name="pname" id="pname" size="25" value="<%=myString%>" disabled>
</td>
</tr>
<tr>
<td>
Description/Remarks
</td>
<td><input type="text" name="remarks" size="25" value="<%=myString%>" disabled>
</td>
</tr>
<tr>
<td>
Client IT Contact Person
</td>
<td><input type="text" name="contact" size="25" value="<%=myString%>" disabled>
</td>
</tr>
<tr>
<td>
Business Sponsor
</td>
<td><input type="text" name="sponsor" size="25" value="<%=myString%>" disabled>
</td>
</tr>
<tr>
<td>
Business Project owner
</td>
<td><input type="text" name="owner" size="25" value="<%=myString%>" disabled>
</td>
</tr>
<tr><td>Priority</td>
<td>
<Select name="priority" disabled>
<option selected><%=myString%></option>
<option>High</option>
<option>Medium</option>
<option>Low</option>
</Select></td>
</tr>
</table>
<table class="navigationclass" >
<tr><td > </td></tr>
<tr><td >Operations</td><td >Navigation</td></tr>
<tr>
<td><input type="submit" name="option" value="save" disabled></td>
<td><input type="submit" name="option" value="add" ></td>
<td><input type="submit" name="option" value="delete" ></td>
<td><input type="submit" name="option" value="cancel" disabled></td>
<td><input type="submit" name="option" value="edit" ></td>
<td><input type="submit" name="option" value="first" ></td>
<td><input type="submit" name="option" value="prev" ></td>
<td><input type="submit" name="option" value= "next" ></td>
<td><input type="submit" name="option" value="last" ></td>
<td><input type="submit" name="option" value="find" ></td>
</tr>
</table>
</form>
</div>
</body>
</html>

// servlet

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
*
* @author Core 2Duo
*/
public class projectservlet extends HttpServlet {
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession(true);
Connection con=null;
Statement st;
ResultSet rs;
ArrayList al = new ArrayList();
ArrayList list = new ArrayList();
try {
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/pr","root","123");
}
catch(Exception e)
{
out.println(e.getMessage());
}
try{
st=con.createStatement();
rs=st.executeQuery("select * from pr_project");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet servlet1</title>");
out.println("</head>");
out.println("<body>");
// response.sendRedirect("first.jsp");
if(rs.next())
{
al.add(rs.getString("pname"));
al.add(rs.getString("remarks"));
al.add(rs.getString("cnt"));
al.add(rs.getString("bsponsor"));
al.add(rs.getString("bprowner"));
al.add(rs.getString("priority"));
list.add(al);
session.setAttribute("list",list);
RequestDispatcher rd=getServletContext().getRequestDispatcher("/project.jsp");
rd.forward(request,response);
}
else
{
RequestDispatcher rd=getServletContext().getRequestDispatcher("/errorpage.jsp");
rd.forward(request, response);
}
out.println("</body>");
out.println("</html>");
}catch(SQLException e1)
{
out.println(e1.getMessage());
}
finally
{
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}

i tried to typecast it but its still not showing any result..

can you please modify the code
Thank you

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

hello Mohamed

can i typecast it into Arraylist!!!

as far as separate class for result set,i am new to java and quite apprehensive regarding making so many classes ,i think i will get confuse :P i know you are telling me the correct approach but can i fix this problem and then make my code better by making separate classes.

and can you give me some example how to use tag library for traversing through the lists.

Thank you so much

14 years ago

JDBC and Relational Databases

Storing resultset into arraylist

hello

I need to store my result set into an ArrayList and then to display data in a jsp page..

//coding in servlet

//coding is jsp page

but its not showing anything,may be its taking long time to process it..please help

14 years ago

JDBC and Relational Databases

How to distinguish between two different button clicks on servlet

@swastik
You are absolutely right:) Thanks for the suggestion,i will make necessary changes.

14 years ago

HTML Pages with CSS and JavaScript

How to distinguish between two different button clicks on servlet

Hey swastik Thanks for this great understanding and encouraging me

i tried doing this by using hidden fields and problem is fixed

//servlet

14 years ago

HTML Pages with CSS and JavaScript

How to distinguish between two different button clicks on servlet

oops!!! i sincerely apologize for that.
i am not using ajax, the problem with submit type is if i make add (of submit type)the moment i press add, control goes to servlet but i dont want that.
So button type seems more appropriate

14 years ago

HTML Pages with CSS and JavaScript

How to distinguish between two different button clicks on servlet

Thanks for your replies..
@swastik I cannot make these buttons of submit type because i want to retain the control on the same jsp page..

i have two functionality in save button.
first case:
1.user clicks add button to insert new records--->clear all the textboxes and enables save and cancel button.
2.user can either click save or cancel.

second case:
1.user clicks edit button to edit the existing record.
2.either save or cancel

now i am not getting how to identify which button has been clicked..need to replace this ### in if condition

14 years ago

HTML Pages with CSS and JavaScript