Session 11. Calling Servlets from Ajax. Lecture Objectives. Understand servlet response formats
|
|
- Duane Sparks
- 6 years ago
- Views:
Transcription
1 Session 11 Calling Servlets from Ajax 1 Lecture Objectives Understand servlet response formats Text Xml Html JSON Understand how to extract data from the XMLHttpRequest object Understand the cross domain issues when requesting servlet data 2 3/27/2014 1
2 Reference Reading & Reference Internet security same origin policy Cross origin resource sharing: 3 Ajax Summary Request to a server is enabled with the XMLHttpRequest object, which Specifies the details of the request Can run synchronously or asynchronously Has properties from which you can extract the response XMLHttpRequest response properties Metadata status, statustext, headers, etc. Text responsetext property XML responsexml (Document object) Structured data (e.g., arrays) sent as text and decoded using JSON.parse method 4 3/27/2014 2
3 JavaScript validation Client Side Validation function validate () { var f = document.getelementbyid(" message"); var t = document.getelementbyid(" "); if((echeck(t.value)==false)){ f.innerhtml="please enter a valid address"; t.focus(); else f.innerhtml=""; <td> <span class="highlight">*</span></td> <td><input id=" " size="35" class="textbox" type="text"onblur="validate ();"> <span> </span><span class="error" id=" message"> </span></td> 5 Ajax Validation in the Servlet Validation can be performed with a servlet call <td>company <span class="highlight">*</span></td> <td> <input id="company" name="1" size="35" class="textbox" type="text" onblur="validatecompany();"> <span> </span> <span class="error" id="companymessage"></span></td> function validatecompany() { var f = document.getelementbyid("companymessage"); var t = document.getelementbyid("company"); var url = " + t.value; req = new XMLHttpRequest(); req.open("get", url, true); req.onreadystatechange = companyvalidation; req.send(null); 6 3/27/2014 3
4 Policy Internet Same Origin Policy Policy disallow many legitimate requests permits scripts running on pages originating from the same site (scheme, hostname, and port number) to access each other's DOM with no specific restrictions Does not allow a page to receive data from a different domain Applies to XMLHttpRequest Browsers implement the policy differently (e.g., IE) You might encounter a status code of 0 instead of 200 if there is a mismatch of domains Domains you might encounter Servlet run in NetBeans localhost:8080 Html opened directly - null 7 Same Origin Policy Workarounds New http header resp.setheader("access-control-allow-origin", "null"); Draft standard Supported by Firefox, Safari, and Chrome Lists origins that may request a file HTML5 postmessage method JASONP 8 3/27/2014 4
5 Example: Servlet Validation Servlet can return simple text (not html) MIME type is text/plain Be careful about white space Println method in your servlet will include a carriage return/line feed Print method will not include extra text Error message returned from servlet 9 Client Code Company name sent to server function validatecompany() { var f = document.getelementbyid("companymessage"); var t = document.getelementbyid("company"); var url = + t.value; req = new XMLHttpRequest(); req.open("get", url, true); req.onreadystatechange = companyvalidation; req.send(null); function companyvalidation() { var f = document.getelementbyid("companymessage"); var t = document.getelementbyid("company"); if (req.readystate==4 && req.status==200){ if(req.responsetext!= "ok") { f.innerhtml=req.responsetext; t.focus(); else f.innerhtml=""; 10 3/27/2014 5
6 Comment on readystate Property if (req.readystate==4 && req.status==200){... Not good style to test hard-coded values (i.e., magic numbers) of readystate Constants available in XMLHttpRequest object, but not implemented uniformly in browsers 0 UNSENT 1 OPENED 2 HEADERS_RECEIVED 3 LOADING 4 - DONE 11 Server Code protected void processrequest(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { response.setcontenttype("text/plain;charset=utf-8"); PrintWriter out = response.getwriter(); response.setheader("access-control-allow-origin", "null"); String c = request.getparameter("company"); if (c.equals("")) { out.print("please enter your company name."); else { out.print("ok"); Error message to be displayed in browser Html that calls this servlet is a local file (domain is null) 12 3/27/2014 6
7 Are We on Track? For your project, write the servlet code that will perform Ajax validation of the drop-down If the Please Select option is selected the error message below will display Hints The onsubmit is in your form element To prevent actual submission to the target, use: <form action=" method="post" name="frm" id="frm" onsubmit="return validatecountry()"> A return of false will prevent submission 13 Were We on Track? function validatecountry() { var f = document.getelementbyid("countrymessage"); var t = document.getelementbyid("country"); var url = " + t.value; req = new XMLHttpRequest(); req.open("get", url, false); req.send(null); return countryvalidation(); Synchronous request has no need to set the callback function function countryvalidation() { var f = document.getelementbyid("countrymessage"); var t = document.getelementbyid("country"); if (req.readystate==4 && req.status==200){ if(req.responsetext!= "ok") { f.innerhtml=req.responsetext; t.focus(); return false; else { f.innerhtml=""; return true; 14 3/27/2014 7
8 Were We on Track? protected void processrequest(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { response.setcontenttype("text/plain;charset=utf-8"); PrintWriter out = response.getwriter(); response.setheader("access-control-allow-origin", "null"); String c = request.getparameter("country"); if (c.equals("")) { out.print("please enter your country name."); else { out.print("ok"); 15 Have You Satisfied the Objectives? Understand servlet response formats Text Xml Html JSON Understand how to extract text data from the XMLHttpRequest object Understand the cross domain issues when requesting servlet data 16 3/27/2014 8
Session 11. Ajax. Reading & Reference
Session 11 Ajax Reference XMLHttpRequest object Reading & Reference en.wikipedia.org/wiki/xmlhttprequest Specification developer.mozilla.org/en-us/docs/web/api/xmlhttprequest JavaScript (6th Edition) by
More informationFall Semester (081) Module7: AJAX
INTERNET & WEB APPLICATION DEVELOPMENT SWE 444 Fall Semester 2008-2009 (081) Module7: AJAX Dr. El-Sayed El-Alfy Computer Science Department King Fahd University of Petroleum and Minerals alfy@kfupm.edu.sa
More informationModule7: AJAX. Click, wait, and refresh user interaction. Synchronous request/response communication model. Page-driven: Workflow is based on pages
INTERNET & WEB APPLICATION DEVELOPMENT SWE 444 Fall Semester 2008-2009 (081) Module7: Objectives/Outline Objectives Outline Understand the role of Learn how to use in your web applications Rich User Experience
More informationAJAX: Introduction CISC 282 November 27, 2018
AJAX: Introduction CISC 282 November 27, 2018 Synchronous Communication User and server take turns waiting User requests pages while browsing Waits for server to respond Waits for the page to load in the
More informationSession 15. RESTful Services Part 3. Lecture Objectives
Session 15 RESTful Services Part 3 1 Lecture Objectives Understand how to pass parameters from the URL to a Web service Understand how to return values from a Web service using the @Produces annotation
More informationAJAX Programming Chris Seddon
AJAX Programming Chris Seddon seddon-software@keme.co.uk 2000-12 CRS Enterprises Ltd 1 2000-12 CRS Enterprises Ltd 2 What is Ajax? "Asynchronous JavaScript and XML" Originally described in 2005 by Jesse
More informationIntroduction to Ajax. Sang Shin Java Technology Architect Sun Microsystems, Inc.
Introduction to Ajax Sang Shin Java Technology Architect Sun Microsystems, Inc. sang.shin@sun.com www.javapassion.com Agenda 1.What is Rich User Experience? 2.Rich Internet Application (RIA) Technologies
More informationAjax- XMLHttpResponse. Returns a value such as ArrayBuffer, Blob, Document, JavaScript object, or a DOMString, based on the value of
Ajax- XMLHttpResponse XMLHttpResponse - A Read only field Returns a value such as ArrayBuffer, Blob, Document, JavaScript object, or a DOMString, based on the value of XMLHttpRequest.responseType. This
More informationAJAX: The Basics CISC 282 March 25, 2014
AJAX: The Basics CISC 282 March 25, 2014 Synchronous Communication User and server take turns waiting User requests pages while browsing Waits for server to respond Waits for the page to load in the browser
More informationA synchronous J avascript A nd X ml
A synchronous J avascript A nd X ml The problem AJAX solves: How to put data from the server onto a web page, without loading a new page or reloading the existing page. Ajax is the concept of combining
More informationSession 18. jquery - Ajax. Reference. Tutorials. jquery Methods. Session 18 jquery and Ajax 10/31/ Robert Kelly,
Session 18 jquery - Ajax 1 Tutorials Reference http://learn.jquery.com/ajax/ http://www.w3schools.com/jquery/jquery_ajax_intro.asp jquery Methods http://www.w3schools.com/jquery/jquery_ref_ajax.asp 2 10/31/2018
More informationAjax Ajax Ajax = Asynchronous JavaScript and XML Using a set of methods built in to JavaScript to transfer data between the browser and a server in the background Reduces the amount of data that must be
More informationAJAX: The Basics CISC 282 November 22, 2017
AJAX: The Basics CISC 282 November 22, 2017 Synchronous Communication User and server take turns waiting User requests pages while browsing Waits for server to respond Waits for the page to load in the
More informationIntroduction to Ajax
Introduction to Ajax with Bob Cozzi What is AJAX? Asynchronous JavaScript and XML A J a X Asynchronous data retrieval using the XMLHttpRequest object from JavaScript Data is retrieved from the server as
More information2/6/2012. Rich Internet Applications. What is Ajax? Defining AJAX. Asynchronous JavaScript and XML Term coined in 2005 by Jesse James Garrett
What is Ajax? Asynchronous JavaScript and XML Term coined in 2005 by Jesse James Garrett http://www.adaptivepath.com/ideas/essays/archives /000385.php Ajax isn t really new, and isn t a single technology
More informationAjax Ajax Ajax = Asynchronous JavaScript and XML Using a set of methods built in to JavaScript to transfer data between the browser and a server in the background Reduces the amount of data that must be
More informationXMLHttpRequest. CS144: Web Applications
XMLHttpRequest http://oak.cs.ucla.edu/cs144/examples/google-suggest.html Q: What is going on behind the scene? What events does it monitor? What does it do when
More informationDiscovery data feed for Eid 2.0
Discovery data feed for Eid 2.0 Proposal for a generic discovery solution for Eid 2.0 Stefan Santesson, 3xA Security AB 2011-09- 10 Summary E- legitimationsnämnden in Sweden are preparing for a new infrastructure
More informationAJAX Basics. Welcome to AJAX Basics presentation. My name is Sang Shin. I am Java technology architect and evangelist from Sun Microsystems.
AJAX Basics Sang Shin Java Technology Architect Sun Microsystems, Inc. sang.shin@sun.com www.javapassion.com Welcome to AJAX Basics presentation. My name is Sang Shin. I am Java technology architect and
More informationJavaScript CoAPRequest API
JavaScript CoAPRequest API Abstract The CoAPRequest specification defines an API that provides scripted client functionality for transferring data between a CoAP client and a CoAP server. Table of Contents
More informationSession 10. Form Dataset. Lecture Objectives
Session 10 Form Dataset Lecture Objectives Understand the relationship between HTML form elements and parameters that are passed to the servlet, particularly the form dataset 2 10/1/2018 1 Example Form
More informationAJAX ASYNCHRONOUS JAVASCRIPT AND XML. Laura Farinetti - DAUIN
AJAX ASYNCHRONOUS JAVASCRIPT AND XML Laura Farinetti - DAUIN Rich-client asynchronous transactions In 2005, Jesse James Garrett wrote an online article titled Ajax: A New Approach to Web Applications (www.adaptivepath.com/ideas/essays/archives/000
More information! The final is at 10:30 am, Sat 6/4, in this room. ! Open book, open notes. ! No electronic devices. ! No food. ! Assignment 7 due 10pm tomorrow
Announcements ECS 89 6/1! The final is at 10:30 am, Sat 6/4, in this room! Open book, open notes! No electronic devices! No food! Assignment 7 due 10pm tomorrow! No late Assignment 7 s! Fill out course
More informationWeb Programming Step by Step
Web Programming Step by Step Lecture 19 Ajax Reading: 10.1-10.2 Except where otherwise noted, the contents of this presentation are Copyright 2009 Marty Stepp and Jessica Miller. Synchronous web communication
More informationIt is highly recommended that you are familiar with HTML and JavaScript before attempting this tutorial.
AJAX About the Tutorial AJAX is a web development technique for creating interactive web applications. If you know JavaScript, HTML, CSS, and XML, then you need to spend just one hour to start with AJAX.
More informationAJAX. Introduction. AJAX: Asynchronous JavaScript and XML
AJAX 1 2 Introduction AJAX: Asynchronous JavaScript and XML Popular in 2005 by Google Create interactive web applications Exchange small amounts of data with the server behind the scenes No need to reload
More informationCSC309: Introduction to Web Programming. Lecture 11
CSC309: Introduction to Web Programming Lecture 11 Wael Aboulsaadat Servlets+JSP Model 2 Architecture 2 Servlets+JSP Model 2 Architecture = MVC Design Pattern 3 Servlets+JSP Model 2 Architecture Controller
More informationController/server communication
Controller/server communication Mendel Rosenblum Controller's role in Model, View, Controller Controller's job to fetch model for the view May have other server communication needs as well (e.g. authentication
More informationAJAX(Asynchronous Javascript + XML) Creating client-side dynamic Web pages
AJAX(Asynchronous Javascript + XML) Creating client-side dynamic Web pages AJAX = Asynchronous JavaScript and XML.AJAX is not a new programming language, but a new way to use existing standards. AJAX is
More informationWeb Programming. Lecture 11. University of Toronto
CSC309: Introduction to Web Programming Lecture 11 Wael Aboulsaadat University of Toronto Servlets+JSP Model 2 Architecture University of Toronto 2 Servlets+JSP Model 2 Architecture = MVC Design Pattern
More informationAn Introduction to AJAX. By : I. Moamin Abughazaleh
An Introduction to AJAX By : I. Moamin Abughazaleh How HTTP works? Page 2 / 25 Classical HTTP Process Page 3 / 25 1. The visitor requests a page 2. The server send the entire HTML, CSS and Javascript code
More informationWeb Application Security
Web Application Security Rajendra Kachhwaha rajendra1983@gmail.com September 23, 2015 Lecture 13: 1/ 18 Outline Introduction to AJAX: 1 What is AJAX 2 Why & When use AJAX 3 What is an AJAX Web Application
More informationA.A. 2008/09. What is Ajax?
Internet t Software Technologies AJAX IMCNE A.A. 2008/09 Gabriele Cecchetti What is Ajax? AJAX stands for Asynchronous JavaScript And XML. AJAX is a type of programming made popular in 2005 by Google (with
More informationController/server communication
Controller/server communication Mendel Rosenblum Controller's role in Model, View, Controller Controller's job to fetch model for the view May have other server communication needs as well (e.g. authentication
More informationAttacking Web2.0. Daiki Fukumori Secure Sky Technology Inc.
Attacking Web2.0 Daiki Fukumori Secure Sky Technology Inc. Agenda Introduction What Is Web2.0 (from Attackers view) Attacking Same-Origin Policy Advanced Attacking Same-Origin
More informationAJAX. Ajax: Asynchronous JavaScript and XML *
AJAX Ajax: Asynchronous JavaScript and XML * AJAX is a developer's dream, because you can: Read data from a web server - after the page has loaded Update a web page without reloading the page Send data
More informationSession 8. Introduction to Servlets. Semester Project
Session 8 Introduction to Servlets 1 Semester Project Reverse engineer a version of the Oracle site You will be validating form fields with Ajax calls to a server You will use multiple formats for the
More informationINTRODUCTION TO SERVLETS AND WEB CONTAINERS. Actions in Accord with All the Laws of Nature
INTRODUCTION TO SERVLETS AND WEB CONTAINERS Actions in Accord with All the Laws of Nature Web server vs web container Most commercial web applications use Apache proven architecture and free license. Tomcat
More informationContents. Demos folder: Demos\14-Ajax. 1. Overview of Ajax. 2. Using Ajax directly. 3. jquery and Ajax. 4. Consuming RESTful services
Ajax Contents 1. Overview of Ajax 2. Using Ajax directly 3. jquery and Ajax 4. Consuming RESTful services Demos folder: Demos\14-Ajax 2 1. Overview of Ajax What is Ajax? Traditional Web applications Ajax
More informationHTTP status codes. Setting status of an HTTPServletResponse
HTTP status codes Setting status of an HTTPServletResponse What are HTTP status codes? The HTTP protocol standard includes three digit status codes to be included in the header of an HTTP response. There
More informationCopyright Descriptor Systems, Course materials may not be reproduced in whole or in part without prior written consent of Joel Barnum
Ajax The notion of asynchronous request processing using the XMLHttpRequest object has been around for several years, but the term "AJAX" was coined by Jesse James Garrett of Adaptive Path. You can read
More informationAsynchronous JavaScript + XML (Ajax)
Asynchronous JavaScript + XML (Ajax) CSE 190 M (Web Programming), Spring 2008 University of Washington References: w3schools, Wikipedia Except where otherwise noted, the contents of this presentation are
More informationAJAX. Lecture 26. Robb T. Koether. Fri, Mar 21, Hampden-Sydney College. Robb T. Koether (Hampden-Sydney College) AJAX Fri, Mar 21, / 16
AJAX Lecture 26 Robb T. Koether Hampden-Sydney College Fri, Mar 21, 2014 Robb T. Koether (Hampden-Sydney College) AJAX Fri, Mar 21, 2014 1 / 16 1 AJAX 2 Http Requests 3 Request States 4 Handling the Response
More informationCS 5142 Scripting Languages
CS 5142 Scripting Languages 10/16/2015 Web Applications Databases 1 Outline Stateful Web Applications AJAX 2 Concepts Scope in Server-Side Scripts Request $_GET, $_POST global $g; Session $_SESSION Application
More informationAjax HTML5 Cookies. Sessions 1A and 1B
Ajax HTML5 Cookies Sessions 1A and 1B JavaScript Popular scripting language: Dynamic and loosely typed variables. Functions are now first-class citizens. Supports OOP. var simple = 2; simple = "I'm text
More informationAjax in Oracle JDeveloper
Ajax in Oracle JDeveloper Bearbeitet von Deepak Vohra 1. Auflage 2008. Taschenbuch. xiv, 224 S. Paperback ISBN 978 3 540 77595 9 Format (B x L): 15,5 x 23,5 cm Gewicht: 373 g Weitere Fachgebiete > EDV,
More informationNetworking & The Web. HCID 520 User Interface Software & Technology
Networking & The Web HCID 520 User Interface Software & Technology Uniform Resource Locator (URL) http://info.cern.ch:80/ 1991 HTTP v0.9 Uniform Resource Locator (URL) http://info.cern.ch:80/ Scheme/Protocol
More informationGetting Started. In this chapter
03_0132216353_ch02.qxd 7/26/06 10:21 AM Page 15 2 Getting Started In this chapter 2.1 XMLHttpRequest Overview page 16 2.2 Cross-Browser XMLHttpRequest page 21 2.3 Sending Asynchronous Requests page 23
More informationConnecting the RISC Client to non-javascriptinterfaces
Connecting the RISC Client to non-javascriptinterfaces Motivation In industry scenarios there is the necessity to connect the RISC client to client side subdevices or interfaces. Examples: serial / USB
More informationUser Interaction: jquery
User Interaction: jquery Assoc. Professor Donald J. Patterson INF 133 Fall 2012 1 jquery A JavaScript Library Cross-browser Free (beer & speech) It supports manipulating HTML elements (DOM) animations
More informationProgramming for Digital Media. Lecture 7 JavaScript By: A. Mousavi and P. Broomhead SERG, School of Engineering Design, Brunel University, UK
Programming for Digital Media Lecture 7 JavaScript By: A. Mousavi and P. Broomhead SERG, School of Engineering Design, Brunel University, UK 1 Topics Ajax (Asynchronous JavaScript and XML) What it is and
More informationPart of this connection identifies how the response can / should be provided to the client code via the use of a callback routine.
What is AJAX? In one sense, AJAX is simply an acronym for Asynchronous JavaScript And XML In another, it is a protocol for sending requests from a client (web page) to a server, and how the information
More informationCITS1231 Web Technologies. Ajax and Web 2.0 Turning clunky website into interactive mashups
CITS1231 Web Technologies Ajax and Web 2.0 Turning clunky website into interactive mashups What is Ajax? Shorthand for Asynchronous JavaScript and XML. Coined by Jesse James Garrett of Adaptive Path. Helps
More informationAjax. Ronald J. Glotzbach
Ajax Ronald J. Glotzbach What is AJAX? Asynchronous JavaScript and XML Ajax is not a technology Ajax mixes well known programming techniques in an uncommon way Enables web builders to create more appealing
More informationLecture 9 (more or less) Web Programming
Lecture 9 (more or less) Web Programming DOM: Document Object Model browser presents an object interface accessible from and modifiable by Javascript DOM entities have methods, properties, events element
More informationCE212 Web Application Programming Part 3
CE212 Web Application Programming Part 3 30/01/2018 CE212 Part 4 1 Servlets 1 A servlet is a Java program running in a server engine containing methods that respond to requests from browsers by generating
More informationWriting Web Applications with Web Services
Writing Web Applications with Web Services and Ajax Mike Diehl Abstract An Ajax primer with Perl and PostgreSQL. If you've done any Web development at all recently, you've no doubt heard the buzz going
More informationAjax or AJAX? The acronym AJAX has changed to the term Ajax, which does not represent specific technologies
Introduc)on to Ajax Ajax Theory What is Ajax Ajax is a group of interrelated technologies used to create interac5ve web applica5ons or rich Internet applica5ons. With Ajax, web applica5ons can retrieve
More informationThe course also includes an overview of some of the most popular frameworks that you will most likely encounter in your real work environments.
Web Development WEB101: Web Development Fundamentals using HTML, CSS and JavaScript $2,495.00 5 Days Replay Class Recordings included with this course Upcoming Dates Course Description This 5-day instructor-led
More informationAjax UNIX MAGAZINE if0505.pdf. (86) Ajax. Ajax. Ajax (Asynchronous JavaScript + XML) Jesse James Garrett Web 1. Web.
(86) Ajax 2003 2 Flash ` CGI Web Web Flash Java Flash Java JavaScript Google Google Suggest GMail Google Maps JavaScript Yahoo! Google Maps JavaScript `Ajax Ajax Web Ajax Ajax (Asynchronous JavaScript
More informationSession 9. Introduction to Servlets. Lecture Objectives
Session 9 Introduction to Servlets Lecture Objectives Understand the foundations for client/server Web interactions Understand the servlet life cycle 2 10/11/2018 1 Reading & Reference Reading Use the
More informationDeveloping Future Web Application with AJAX and ASP.NET Project "Atlas"
Developing Future Web Application with AJAX and ASP.NET Project "Atlas" Smith Suksmith Microsoft MVP Solution Architect Web Application Rich UI can t delivered by Browser Technology How about Google Earth
More informationCode Examples Using Java ME Technology and New Web 2.0 Services (Beyond Google Maps)
Code Examples Using Java ME Technology and New Web 2.0 Services (Beyond Google Maps) Hinkmond Wong Sr. Staff Engineer Sun Microsystems, Inc. https://j2me-cdc.dev.java.net/ TS-1302 Copyright 2006, Sun Microsystems
More information,
Weekdays:- 1½ hrs / 3 days Fastrack:- 1½hrs / Day [Class Room and Online] ISO 9001:2015 CERTIFIED ADMEC Multimedia Institute www.admecindia.co.in 9911782350, 9811818122 Welcome to one of the highly professional
More informationAJP. CHAPTER 5: SERVLET -20 marks
1) Draw and explain the life cycle of servlet. (Explanation 3 Marks, Diagram -1 Marks) AJP CHAPTER 5: SERVLET -20 marks Ans : Three methods are central to the life cycle of a servlet. These are init( ),
More informationWeb Fundamentals. Typical Current Web Architecture. Web Server HTTP interface. HTML, Images, cookies, JSON, etc.
Web Fundamentals 1 Typical Current Web Architecture Web Container Browser HTML, CSS, MIME Type Display URL / Query string / HTTP data, cookies, etc. HTML, Images, cookies, JSON, etc. Web Server HTTP interface
More informationChapter 1 Introduction to Computers and the Internet
CPET 499/ITC 250 Web Systems Dec. 6, 2012 Review of Courses Chapter 1 Introduction to Computers and the Internet The Internet in Industry & Research o E Commerce & Business o Mobile Computing and SmartPhone
More informationPortlets and Ajax: Building More Dynamic Web Apps
Portlets and Ajax: Building More Dynamic Web Apps Subbu Allamaraju Senior Staff Engineer BEA Systems, Inc. TS-4003 2007 JavaOne SM Conference Session TS-4003 Goals Goals of the of Session the Session Learn
More informationJavaScript. MPRI : Web Data Management. Antoine Amarilli Friday, December 7th 1/37
JavaScript MPRI 2.26.2: Web Data Management Antoine Amarilli Friday, December 7th 1/37 Motivation Dynamic changes on the client without refreshing the page Simple cases: form validation, menus, etc. going
More informationIntroduction to AJAX Bringing Interactivity & Intuitiveness Into Web Applications. By : Bhanwar Gupta SD-Team-Member Jsoft Solutions
Introduction to AJAX Bringing Interactivity & Intuitiveness Into Web Applications By : Bhanwar Gupta SD-Team-Member Jsoft Solutions Applications today You have two basic choices: Desktop applications and
More informationUsing Java servlets to generate dynamic WAP content
C H A P T E R 2 4 Using Java servlets to generate dynamic WAP content 24.1 Generating dynamic WAP content 380 24.2 The role of the servlet 381 24.3 Generating output to WAP clients 382 24.4 Invoking a
More informationCSC Javascript
CSC 4800 Javascript See book! Javascript Syntax How to embed javascript between from an external file In an event handler URL - bookmarklet
More informationINDEX SYMBOLS See also
INDEX SYMBOLS @ characters, PHP methods, 125 $ SERVER global array variable, 187 $() function, 176 $F() function, 176-177 elements, Rico, 184, 187 elements, 102 containers,
More informationSession 20 Data Sharing Session 20 Data Sharing & Cookies
Session 20 Data Sharing & Cookies 1 Reading Shared scopes Java EE 7 Tutorial Section 17.3 Reference http state management www.ietf.org/rfc/rfc2965.txt Cookies Reading & Reference en.wikipedia.org/wiki/http_cookie
More informationServlets by Example. Joe Howse 7 June 2011
Servlets by Example Joe Howse 7 June 2011 What is a servlet? A servlet is a Java application that receives HTTP requests as input and generates HTTP responses as output. As the name implies, it runs on
More informationIT2353 WEB TECHNOLOGY Question Bank UNIT I 1. What is the difference between node and host? 2. What is the purpose of routers? 3. Define protocol. 4.
IT2353 WEB TECHNOLOGY Question Bank UNIT I 1. What is the difference between node and host? 2. What is the purpose of routers? 3. Define protocol. 4. Why are the protocols layered? 5. Define encapsulation.
More informationGet the cookies from the service request: Cookie[] HttpServletRequest.getCookies() Add a cookie to the service response:
Managing Cookies Cookies Cookies are a general mechanism which server side applications can use to both store and retrieve information on the client side Servers send cookies in the HTTP response and browsers
More informationSession 12. RESTful Services. Lecture Objectives
Session 12 RESTful Services 1 Lecture Objectives Understand the fundamental concepts of Web services Become familiar with JAX-RS annotations Be able to build a simple Web service 2 10/21/2018 1 Reading
More informationServlet for Json or CSV (or XML) A servlet serving either Json or CSV (or XML) based on GET parameter - This version uses org.json
Servlet for Json or CSV (or XML) A servlet serving either Json or CSV (or XML) based on GET parameter - This version uses org.json A Servlet used as an API for data Let s say we want to write a Servlet
More informationEntice Embedding Firefox in Tk
Entice Embedding Firefox in Tk Steve Landers Digital Smarties steve@digitalsmarties.com Abstract This paper describes Entice - a Tcl/Tk extension that allows multiple Firefox windows to be embedded into
More informationE ECMAScript, 21 elements collection, HTML, 30 31, 31. Index 161
A element, 108 accessing objects within HTML, using JavaScript, 27 28, 28 activatediv()/deactivatediv(), 114 115, 115 ActiveXObject, AJAX and, 132, 140 adding information to page dynamically, 30, 30,
More informationSession 6. JavaScript Part 1. Reading
Session 6 JavaScript Part 1 Reading Reading Wikipedia en.wikipedia.org/wiki/javascript Web Developers Notes www.webdevelopersnotes.com/tutorials/javascript/ JavaScript Debugging www.w3schools.com/js/js_debugging.asp
More informationAdvanced Topics in Operating Systems. Manual for Lab Practices. Enterprise JavaBeans
University of New York, Tirana M.Sc. Computer Science Advanced Topics in Operating Systems Manual for Lab Practices Enterprise JavaBeans PART III A Web Banking Application with EJB and MySQL Development
More informationTIME SCHEDULE MODULE TOPICS PERIODS. HTML Document Object Model (DOM) and javascript Object Notation (JSON)
COURSE TITLE : ADVANCED WEB DESIGN COURSE CODE : 5262 COURSE CATEGORY : A PERIODS/WEEK : 4 PERIODS/SEMESTER : 52 CREDITS : 4 TIME SCHEDULE MODULE TOPICS PERIODS 1 HTML Document Object Model (DOM) and javascript
More informationNetworking & The Web. HCID 520 User Interface Software & Technology
Networking & The HCID 520 User Interface Software & Technology Uniform Resource Locator (URL) http://info.cern.ch:80/ 1991 HTTP v0.9 Uniform Resource Locator (URL) http://info.cern.ch:80/ Scheme/Protocol
More informationWeb Programming/Scripting: PHP and AJAX Refresher
CS 312 Internet Concepts Web Programming/Scripting: PHP and AJAX Refresher Dr. Michele Weigle Department of Computer Science Old Dominion University mweigle@cs.odu.edu http://www.cs.odu.edu/~mweigle/cs312-f11
More informationCREATE A SERVLET PROGRAM TO DISPLAY THE STUDENTS MARKS. To create a servlet program to display the students marks
CREATE A SERVLET PROGRAM TO DISPLAY THE STUDENTS MARKS DATE: 30.9.11 Aim: To create a servlet program to display the students marks Hardware requirements: Intel Core 2 Quad 2GB RAM Software requirements:
More informationCT51 WEB TECHNOLOGY ALCCS-FEB 2014
Q.1 a. What is the purpose of Marquee tag? Text included within the tag moves continuously from right to left. For e.g. The globe is moving It is used actually to highlight
More informationChapter 3: Web Paradigms and Interactivity
Chapter 3: Web Paradigms and Interactivity 3.1 AJAX: Asynchronous Interactivity in the Web 3.2 Paradigms for Web-Based Communication 3.3 Reverse AJAX and COMET 3.4 Web Sockets and Web Messaging 3.5 Web
More informationKamnoetvidya Science Academy. Object Oriented Programming using Java. Ferdin Joe John Joseph. Java Session
Kamnoetvidya Science Academy Object Oriented Programming using Java Ferdin Joe John Joseph Java Session Create the files as required in the below code and try using sessions in java servlets web.xml
More informationJAVA SERVLET. Server-side Programming INTRODUCTION
JAVA SERVLET Server-side Programming INTRODUCTION 1 AGENDA Introduction Java Servlet Web/Application Server Servlet Life Cycle Web Application Life Cycle Servlet API Writing Servlet Program Summary 2 INTRODUCTION
More informationTerm Paper. P r o f. D r. E d u a r d H e i n d l. H o c h s c h u l e F u r t w a n g e n U n i v e r s i t y. P r e s e n t e d T o :
Version: 0.1 Date: 02.05.2009 Author(s): Doddy Satyasree AJAX Person responsable: Doddy Satyasree Language: English Term Paper History Version Status Date 0.1 Draft Version created 02.05.2009 0.2 Final
More informationServlets1. What are Servlets? Where are they? Their job. Servlet container. Only Http?
What are Servlets? Servlets1 Fatemeh Abbasinejad abbasine@cs.ucdavis.edu A program that runs on a web server acting as middle layer between requests coming from a web browser and databases or applications
More informationWeb 2.0 Attacks Explained
Web 2.0 Attacks Explained Kiran Maraju, CISSP, CEH, ITIL, ISO27001, SCJP Email: Kiran_maraju@yahoo.com Abstract This paper details various security concerns and risks associated with web 2.0 technologies
More informationRESTful Examples. RESTful Examples 1 Apache 3 Jersey 5 JAX-RS 7 ApplicationConfig.java 7 HelloGregg.java 8
RESTful Examples RESTful Examples 1 Apache 3 Jersey 5 JAX-RS 7 ApplicationConfig.java 7 HelloGregg.java 8 REST in JavaScript 9 #1) createrequest with XMLHttpRequest 9 #2) Must supply a Callback function
More informationIntroduction. This course Software Architecture with Java will discuss the following topics:
Introduction This course Software Architecture with Java will discuss the following topics: Java servlets Java Server Pages (JSP s) Java Beans JDBC, connections to RDBMS and SQL XML and XML translations
More informationJOE WIPING OUT CSRF
JOE ROZNER @JROZNER WIPING OUT CSRF IT S 2017 WHAT IS CSRF? 4 WHEN AN ATTACKER FORCES A VICTIM TO EXECUTE UNWANTED OR UNINTENTIONAL HTTP REQUESTS WHERE DOES CSRF COME FROM? 6 SAFE VS. UNSAFE Safe GET HEAD
More informationLab session Google Application Engine - GAE. Navid Nikaein
Lab session Google Application Engine - GAE Navid Nikaein Available projects Project Company contact Mobile Financial Services Innovation TIC Vasco Mendès Bluetooth low energy Application on Smart Phone
More informationSession 8. JavaBeans. Reading & Reference. Reading. Reference. Session 8 Java Beans. 2/27/2013 Robert Kelly, Head First Chapter 3 (MVC)
Session 8 JavaBeans 1 Reading Reading & Reference Head First Chapter 3 (MVC) Reference JavaBeans Tutorialdocs.oracle.com/javase/tutorial/javabeans/ 2 2/27/2013 1 Lecture Objectives Understand how the Model/View/Controller
More informationJquery.ajax Call Returns Status Code Of 200 But Fires Jquery Error
Jquery.ajax Call Returns Status Code Of 200 But Fires Jquery Error The request returns http 200 OK, but the xhr status is 0, error. jquery Ajax Request to get JSON data fires error event to make an ajax
More information