All about shivam singhal

How to get POST data?

if you need individual parameter then

request.getParameter("ParameterName");

ParameterName would be seted in your JSP sending request to the servlet.
is a good option.

2 years ago

Servlets

Back button flashing previous page

are you trying to disable browser's back button?
If yes, then this flashing is not due to your servlet but due to the Javascript code you have used.

2 years ago

Servlets

Unable to access config value in servlet

hi sahil,

you can define <init-param> inside a servlet, which can be accessed from the same servlet like:
<servlet>
<servlet-name>abc</servlet-name>
<servlet-class>abc</servlet-class>

<init-param>
<param-name>n1</param-name>
<param-value>100</param-value>
</init-param>
</servlet>
Access : int x = getInitParameter("n1");

it can be accessed within the same servlet.

In your case you should use <context-param>
<context-param>
<param-name>n1</param-name>
<param-value>100</param-value>
</context-param>

Access : int i = getServletContext.getInitParameter("n1");

2 years ago

Servlets

Best ebook to learn servlets and jsp

start learning Servlets and JSP by :
Head first servlet & JSP by kathy sierra and bert bates

2 years ago

Servlets

learn perl

Hii all

I already knows java programming language at a professional level like i had developed some web-apps for my startup.
But right now my project needs perl.
so, i want to learn perl now.

can you guys please suggest me the best book to learn perl. so, that i am able to solve critical work issues using perl script and i would be able to use my brain in develoiping the perl scripts.
please i need to be productive in perl As Soon As Possible.

so, please suggest me the book accordingly.

Thankls in Advance.

3 years ago

Perl

needed to send variable in anchor to same page jump

not resolved yet, please help..

I want c:set to display the id of a selected row (name for the above code), but it only gets the last row's (loaded) id. How to do that, please help..
jsp jstl

3 years ago

JSP

needed to send variable in anchor to same page jump

i am sorry bear bibeault for red text...
thanks for the reply, i am going to read about request params.. :)

3 years ago

JSP

needed to send variable in anchor to same page jump

code is working fine,

my problem : 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

please help me, stucked in this, from half of the day.. please :)

3 years ago

JSP

best practice in developing a web-application

so, is it a good approach to use <script> within <body>

3 years ago

JSP

best practice in developing a web-application

ok .. thanks Bear Bibeault .. :)

3 years ago

JSP

best practice in developing a web-application

this is my header.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.sql.*"%>
<%@page isELIgnored="false"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="s"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>blah blah</title>
<link type="text/css" rel="stylesheet" href="css/bootstrap.min3e5c.css?1388355641" />
<link type="text/css" rel="stylesheet" href="css/bootstrap-responsive.min26e1.css?1354579200" />
<link type="text/css" rel="stylesheet" href="css/main5088.css?1389437229" />
<link type="text/css" rel="stylesheet" href="css/font-awesome6dd5.css?1358035200" />
<link charset="utf-8" href="http://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700" media="screen" rel="stylesheet">
<link charset="utf-8" href="http://fonts.googleapis.com/css?family=Roboto%20Condensed:400" media="screen" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="css/DT_bootstrap.css">
<script charset="utf-8" src="../www.gstatic.com/external_hosted/modernizr/modernizr.js"></script>
<style>
body, h1, h2 { font-family: -webkit-body;font-family: 'Roboto';font-weight: 300;}
</style>
<link rel="shortcut icon" href="img/favicon.ico">

<script type="text/javascript" src="js/jquery-1.10.2.js"></script>
<script type="text/javascript" src="js/jquery.dataTables.js"></script>
<script type="text/javascript" src="js/DT_bootstrap.js"></script>

<script type="text/javascript" src="js/bootstrapb91a.js?1382559660"></script>
<script type="text/javascript" src="js/simpleCartbbb6.js?1383112740"></script>
<script type="text/javascript" src="js/restaurant3a1f.js?1383972120"></script>
<script type="text/javascript" src="js/jquery.quicksandb91a.js?1382559660"></script>
<script type="text/javascript" src="js/jquery.validate.minb91a.js?1382559660"></script>
<script type="text/javascript" src="js/function2bde.js?1389899428"></script>
<script src="translate.google.com/translate_a/elementa0d8.html?cb=googleTranslateElementInit"></script>
<link rel="stylesheet" href="css/magnific-popup.css">
<script src="js/jquery.magnific-popup.js"></script>
<script src="js/jquery.magnific-popup.min.js"></script>
<script src="js/jquery.balloon.js"></script>
<script src="js/jquery.session.js"></script>
<script src="js/jquery.ui-alert.js"></script>
<script src="js/jquery.validate.min.js"></script>
<link href="css/exampleold.css" rel="stylesheet" type="text/css"/>
<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script src="js/jquery.barrating.js"></script>
<script>
$(document).ready(function () {
//Redirect on Change
$('#service input').on('change', function() {
var href = window.location.href.substring(0, window.location.href.indexOf('?'));
var qs = window.location.href.substring(window.location.href.indexOf('?') + 1, window.location.href.length);
var newParam = ("service") + '=' + $('input[name=servicetype]:checked', '#service').val();
if (qs.indexOf("service" + '=') == -1) {
if (qs == '') {
qs = '?'
}
else {
qs = qs + '&'
}
qs = qs + newParam;
}
else {
var start = qs.indexOf("service" + "=");
var end = qs.indexOf("&", start);
if (end == -1) {
end = qs.length;
}
var curParam = qs.substring(start, end);
qs = qs.replace(curParam, newParam);
}
window.location.assign(href + '?' + qs);
});
});
//lot of scripting coe
</script>
</head>
<body>
//some other code for header bar at the top of the page

index.jsp :

footer.jsp

I am coding like this..
please correct me for my mistakes..

3 years ago

JSP

best practice in developing a web-application

actually i am using bootstrap..
yes Bear Bibeault, you caught my feelings.. :)
and thanks Bear Bibeault, i think,i got my answer,,

what i done till now :
i create one header file , and import all the jqueries, javascripts in that page, and use <jsp:include> on each page because every page needs header, and with that header all the javascripts, jquery are also included in each page

and its a wrong way?

3 years ago

JSP

best practice in developing a web-application

Ways are :

1. one way is that i put each and every script (javascript, jquery) in <head> of header file and import them using <jsp:include>

2. other way is not to use <jsp:include> and use the script file in <head> of each page .
i.e don't use <jsp:include>

which is the best?

3 years ago

JSP

best practice in developing a web-application

yes, javascript files, jquery files ..

3 years ago

JSP

best practice in developing a web-application

is it the best practice of placing all the scripts use in different pages to be placed in the header file??

I think no because if a page do not uses a particular script and it is still loading and wasting processing time and memory..
what is the correct way..
please correct me..

3 years ago

JSP

shivam singhal

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