Servlets :: Make Array From DB Results To Send To JSP Page?

Jun 25, 2014

I can now call the DB on the query I want and return results. What I know want to do is build an array of the data, forward it to the JSP page and display the bits individually.

So THis is the Servlet I havce:

package com.journaldev.jdbc.datasource;
import java.awt.List;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;

[code]...

I think It is to do either with the way I am adding the values to User or its the forward:

getServletConfig().getServletContext().getRequestDispatcher("/test.jsp").forward(request, response);

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How To Just Copy A Link To Results Page

Dec 17, 2014

I'm working on a simple site for my friend, and he asked me to link to his other site. I need to have the link to a specific search. For example, if I search for "Heathrow," I need to be able to link a button on the other site so that it can be clicked and directed to the search results on this page. Problem is that this is apparently all Java (which I know nothing of) and how to just copy a link to the results page.

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JSP :: Send Variable In Anchor To Same Page Jump

Aug 2, 2014

// code for this file including sql query for 1st <c:forEach> tag which is working fine.
<table>
<c:forEach items="${rs.rows}" var="data">
<tr>
<a href="res_pkey=${data.discount_PKey}#my-offers" data-toggle="modal">
<s:query var="rs2" sql="select * from discount where discount_id='${data.discount_PKey}' " ></s:query>
<c:forEach items="${rs2.rows}" var="data2">

[code]....

code is working fine, please check the red coloured lines in code above, here i want to send different value of res_pkey to my-offers according to the user selected row of the table, thats why i am using it in the anchor tag.previously i tried : <c:set> but it updates its value during loading of the page and set it to the last row's value.I want : when user select a row, only that perticular value should be given to tha my-offers

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How To Send User Back To Login Page After A Specific Idle Timeout

Sep 29, 2014

I want to send user back to the Login page after idle time of 10 secs. If user clicks again on screen before 10 secs are over, time will automatically reset to new 10 sec and so on...

I want to use the same timeout on multiple pages.

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Servlets :: How To Send A Response Of A Map As A Json

Oct 5, 2014

@RequestMapping(value = { "/mapping" }, method = RequestMethod.GET)
@ResponseBody
public Map<A, List<B>> getAsByB(HttpServletRequest httpRequest) {
return map;
}

when i try to get it by url i get an error. how can i send a response of a map as a json ?

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May 30, 2014

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In my application i don't have any JSP,html only controller part which will handle request extract request parameters & based on request params i'll do a web service call.

My current requirement is based on request parameters i'll send request to another web application with received parameters.

I tried with sendRedirect() ,but it support only get() method.

how to proceed further.

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Aug 11, 2014

I'm new to json and the web. My purpose is to use json data from a server and parse it and show meaningful data to the user. I am aware of json parsing, so no sweat there. However, I would like to know how json data is sent to the front end after which it can be parsed.

Usually in my json parsing examples, I have a variable like var data = ]OR I do a getJSON on a data.json file which I have stored in the project folder. However, I want this data to come real time from a servlet. How to go about this?

So, basically my question is, how do I send real time json data from a servlet backend, say some records which I have extracted from the database using jdbc?

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Servlets :: Send Data Over Network Using Httpsession?

Jan 9, 2015

I am learning few concepts in servlets. And i came across this doubt. We used to send data over network using httpsession as below.

HttpSession session = request.getSession();
Object obj = new Object();
session.setAttribute("object", obj);

And get the data in JSP with below code

<%= session.getAttribute("object")%>

However I am not sure whether HTTPSession is serializable or not.

How HTTPSession works?

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I am creating cash counter application. i want to generate a pdf receipt in new window and print it.

I am using jsp to take input from user and servlets to process the input.

I am able to generate a pdf but in same page. i want it to be a popup menu. How to implement it?

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Servlets :: Send And Receive Object Between Client And Server

Jul 6, 2014

I write a Client/Server program,trying to send and receive a object between client and server. I use the ObjectStream but there exists an EOFException on the client side when invoking readObject() .... I've tried many times but couldn't figure it out ...

server-side code

protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
try{
ObjectOutputStream out = new ObjectOutputStream(resp.getOutputStream());
ObjectInputStream in = new ObjectInputStream(req.getInputStream());
PersonalData pe = (PersonalData)in.readObject();
System.out.println(pe.getYearlySalary());

[Code] .....

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Exam Results - Code Should Split Results In Stars In 4 Categories

Nov 30, 2014

I'm doing a program where a user enters in exam results for students. Once he's entered the code, the code should split the results in stars in 4 categories.

I am working with a while loop that prints out infinite results. What I want to do is, if the user enters 2 digits, say "12", it should output 1 "*".

If the user enters "21" and "22", it should output "**".

There are 4 categories of marks which are marked with ints range1, range2, range3 and range4, which are user enter digits. Part 1 of the code is to split the user entered digits into its correct ranges. the ranges are 0-29, 30-39, 40-69 and 70-100. I've done the part where when the user enters a digit, it goes into the correct variable. After that when the user enters a digit over 100, the enter results should show up as stars. For example

Enter number =

21
22
44
66
44
23
11
111 (the 111 is where the program breaks and moves on)

So it should then display

0-29 ****

30-39

40-69 ***

70-100

Whatever I'm trying, it displays an infinite amount of stars. If I try to use break, It only outputs a single star, no matter how many digits I enter

Here is the code

int mark = 0;
int range1 = 0, range2 = 0, range3 = 0, range4 = 0;
int count1 = 0, count2 = 0, count3 = 0, count4 = 0;
while (mark >=0 && mark <=100) {

[Code] .....

"The problem is with the while loop, the one above is something I was experimenting with "

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Aug 29, 2014

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Sep 16, 2014

I am having the hardest time trying to figure out how to display an array in a 1-window GUI.

I can display 1 book separately, by basically ignoring the array and creating a new object for each book, but I need all 5 books to display in one window, and that's where I'm lost. I'd really like to use the arrayI built to generate the books in the GUI. The information of each book appearing horizontally, and the different books appearing vertically.

// Bookstore.java
// This program displays information on multiple books

/* Currency Formating Import */
import java.text.NumberFormat;
import java.util.Locale;
import java.util.Arrays;

[Code] ....

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May 20, 2014

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String File_To_Convert = "test.htm";

How do I get the url of the JSP page?

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Mar 25, 2014

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May 22, 2014

I have to convert servlet into jsp. but i dnt know how to convert servlet into jsp.This is my Servlet

package com.example.imagecalculation;
import java.awt.List;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Iterator;
import java.io.File;

[code]....

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Mar 27, 2014

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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// TODO Auto-generated method stub
/* Connexion la base de donnees */
try {
Class.forName("org.postgresql.Driver");
System.out.println("Driver O.K.");

[code]...

I just want to know how can i move to another jsp page from my servlet.

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May 30, 2014

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Aug 20, 2014

In my jsp, I have a table with some file paths with this I have to get the file and send it to server. I am able to read the file name, size and file as binary using files of javascript. But after that I need to send those files by storing in a byte array to servlet which I am not able to that. Is there any way I can send that. My requirement is I need to upload those files to server side.

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Servlets :: Making JSP Page To Display On First Request

Jan 7, 2015

my Servlet as I would like my Servlet to run first and to create a session var then forward the value to the JSP (the GUI ) and have the JSP able to send a var back to the Servlet for reprocessing and update the session var to again be sent to the JSP and so on . - The Servlet contains logic to handle incorrect input types and directly out puts a HTML error page..

Below I will add the code I have so far and a link to the question in my Text Book.

My code:

JSP Page:

bank.JSP :

<%
//Starts outputting the HTML Form
%>
<html>
<head>

[Code].....

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Aug 12, 2014

I am trying to pass values from JSP Page to Servlets but I am getting a NullPointerException

Here is my JSP code

<html>
<head>
<title>Student Registration Form</title>
<style type="text/css">
h3{font-family: Calibri; font-size: 22pt; font-style: normal; font-weight: bold; color:SlateBlue;
text-align: center; text-decoration: underline }
table{font-family: Calibri; color:white; font-size: 11pt; font-style: normal;

[Code]...

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Servlets :: Download Text From JSP Page By Request

Jul 3, 2014

I have a code that writes the text file uploaded in a server but I want to write a text that I get it from jsp page by request, how can I write it?

FileInputStream fileToDownload ;
private static final int BYTES_DOWNLOAD = 1024;
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws IOException{
response.setContentType("text/plain");
String name = request.getParameter("n");
response.setHeader("Content-Disposition",

[Code] ....

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<form method="post" action="updateAccount"
encType="multipart/form-data">
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