The document discusses session tracking in servlets using cookies. It explains that HTTP is stateless and cookies allow servers to maintain state across multiple requests from the same user. Cookies are stored in the user's browser and sent with each request to identify the user. The document provides details on how cookies work in servlets, the different types of cookies, how to create, access, and delete cookies using the Cookie class in servlets. It includes an example servlet program that sets a cookie on the first request and reads it on the second to track user sessions across multiple pages.
This document discusses servlets, servlet configuration, servlet context, session tracking techniques, and servlet filters in Java web applications. It explains that servletconfig is used to configure individual servlets while servletcontext is used for global application configuration. Session tracking can be done via cookies, hidden form fields, URL rewriting, or HTTP session. Filters provide preprocessing and postprocessing of requests and have initialization, processing, and destruction lifecycle methods.
The document discusses session tracking in web applications. A session allows servers to track interactions with clients over time. Traditionally, sessions were tracked using hidden form fields, URL rewriting, or persistent cookies. The Java servlet API provides an easier session tracking mechanism using HttpSession objects. The API handles associating session data on the server with clients using cookies or URL parameters. Servlets access session data by calling getSession on the HttpRequest to retrieve an HttpSession object, then calling setAttribute and getAttribute to store and retrieve objects in the session. This allows servlets to maintain shopping carts and other stateful data across multiple requests.
Servlets are Java programs that run on the server-side and dynamically generate web pages using Java code. Servlets provide server-side programming functionality and are an effective replacement for CGI scripts. Servlets follow a standard API and can be deployed across distributed server environments.
The document discusses server-side programming and Java 2 Enterprise Edition (J2EE). It explains what J2EE is, its architecture and components. It describes the lifecycle of a servlet, including initialization, request handling, and destruction. It also discusses session management techniques in servlets like using cookies, URL rewriting, and hidden form fields to track user requests across multiple pages. Exception handling using request dispatchers is also covered.
This document provides an overview of Java servlets technology, including:
1. What Java servlets are and their main purposes and advantages such as portability, power, and integration with server APIs.
2. Key aspects of servlet architecture like the servlet lifecycle, the HttpServletRequest and HttpServletResponse objects, and how different HTTP methods map to servlet methods.
3. Examples of simple servlets that process parameters, maintain a session counter, and examples of deploying servlets in Eclipse IDE.
Java servlets are small programs that run on a web server and dynamically generate web page content. They extend the functionality of web servers and allow for more complex interactions than CGI programs. Servlets support multithreading and sharing of resources, making them faster than CGI programs which require creating a new process for each request. Common ways to handle form data submitted to servlets include using the getParameter() method to retrieve parameter values by name. Sessions can be tracked across requests using cookies, which are small pieces of data stored in the user's browser by the web server. There are two main architectures for developing JSP applications - page-centric and servlet-centric, with servlet-centric following the MVC pattern and separating business
This document discusses servlet technology and JavaServer Pages (JSP) technology. It provides definitions and explanations of servlets, JSPs, cookies, and related classes and interfaces. Some key points include:
- Servlets are Java programs that generate dynamic web content and reside on the server-side. JSPs are similar to servlets but make it easier to separate programming logic from presentation logic.
- The servlet lifecycle involves loading, instantiating, initializing, servicing requests, and destroying the servlet. The servlet interface defines common methods like init(), service(), destroy(), etc.
- Cookies are small pieces of information stored by the web server on the client-side browser
The document discusses session tracking in servlets using cookies. It explains that HTTP is stateless and cookies allow servers to maintain state across multiple requests from the same user. Cookies are stored in the user's browser and sent with each request to identify the user. The document provides details on how cookies work in servlets, the different types of cookies, how to create, access, and delete cookies using the Cookie class in servlets. It includes an example servlet program that sets a cookie on the first request and reads it on the second to track user sessions across multiple pages.
This document discusses servlets, servlet configuration, servlet context, session tracking techniques, and servlet filters in Java web applications. It explains that servletconfig is used to configure individual servlets while servletcontext is used for global application configuration. Session tracking can be done via cookies, hidden form fields, URL rewriting, or HTTP session. Filters provide preprocessing and postprocessing of requests and have initialization, processing, and destruction lifecycle methods.
The document discusses session tracking in web applications. A session allows servers to track interactions with clients over time. Traditionally, sessions were tracked using hidden form fields, URL rewriting, or persistent cookies. The Java servlet API provides an easier session tracking mechanism using HttpSession objects. The API handles associating session data on the server with clients using cookies or URL parameters. Servlets access session data by calling getSession on the HttpRequest to retrieve an HttpSession object, then calling setAttribute and getAttribute to store and retrieve objects in the session. This allows servlets to maintain shopping carts and other stateful data across multiple requests.
Servlets are Java programs that run on the server-side and dynamically generate web pages using Java code. Servlets provide server-side programming functionality and are an effective replacement for CGI scripts. Servlets follow a standard API and can be deployed across distributed server environments.
The document discusses server-side programming and Java 2 Enterprise Edition (J2EE). It explains what J2EE is, its architecture and components. It describes the lifecycle of a servlet, including initialization, request handling, and destruction. It also discusses session management techniques in servlets like using cookies, URL rewriting, and hidden form fields to track user requests across multiple pages. Exception handling using request dispatchers is also covered.
This document provides an overview of Java servlets technology, including:
1. What Java servlets are and their main purposes and advantages such as portability, power, and integration with server APIs.
2. Key aspects of servlet architecture like the servlet lifecycle, the HttpServletRequest and HttpServletResponse objects, and how different HTTP methods map to servlet methods.
3. Examples of simple servlets that process parameters, maintain a session counter, and examples of deploying servlets in Eclipse IDE.
Java servlets are small programs that run on a web server and dynamically generate web page content. They extend the functionality of web servers and allow for more complex interactions than CGI programs. Servlets support multithreading and sharing of resources, making them faster than CGI programs which require creating a new process for each request. Common ways to handle form data submitted to servlets include using the getParameter() method to retrieve parameter values by name. Sessions can be tracked across requests using cookies, which are small pieces of data stored in the user's browser by the web server. There are two main architectures for developing JSP applications - page-centric and servlet-centric, with servlet-centric following the MVC pattern and separating business
This document discusses servlet technology and JavaServer Pages (JSP) technology. It provides definitions and explanations of servlets, JSPs, cookies, and related classes and interfaces. Some key points include:
- Servlets are Java programs that generate dynamic web content and reside on the server-side. JSPs are similar to servlets but make it easier to separate programming logic from presentation logic.
- The servlet lifecycle involves loading, instantiating, initializing, servicing requests, and destroying the servlet. The servlet interface defines common methods like init(), service(), destroy(), etc.
- Cookies are small pieces of information stored by the web server on the client-side browser
In this chapter, we will discuss session tracking in JSP. HTTP is a "stateless" protocol which means each time a client retrieves a Webpage, the client opens a separate connection to the Web server and the server automatically does not keep any record of previous client request.
Maintaining Session Between Web Client And Server
Let us now discuss a few options to maintain the session between the Web Client and the Web Server −
Cookies
A webserver can assign a unique session ID as a cookie to each web client and for subsequent requests from the client they can be recognized using the received cookie.
Session tracking allows servers to maintain state about a user's requests and keep track of multiple conversations (S1). It is commonly used in e-commerce to track a user's cart as they shop (S1). There are three main ways to implement session tracking: using cookies, URL rewriting, or the session API built into servlets (S2). The session API makes it easy to store and retrieve session attributes and determine if it is a new session (S3). Sessions can be invalidated manually or automatically if inactive for a period of time.
The document discusses different state management techniques in ASP.NET. It describes client-side techniques like hidden fields, view state, cookies, query strings, and control state. It also describes server-side techniques like session state and application state. Session state stores and retrieves data for each user session while application state stores data accessible to all users. Examples are provided for hidden fields, view state, cookies, query strings, session state, and application state.
Authentication in Svelte using cookies.pptxKnoldus Inc.
Svelte streamlines authentication with cookies, offering a secure and seamless user experience. Effortlessly manage sessions by storing tokens in cookies, ensuring persistent logins. With Svelte's simplicity, implement robust authentication mechanisms, enhancing user security and interaction.
- Cookies allow servers to identify repeat visitors and customize websites by storing small amounts of data on a user's device. They help enable e-commerce sessions and avoid requiring usernames and passwords. However, they also raise privacy concerns if sensitive personal information is stored in cookies or they are shared across sites.
- Cookies are created and sent by servers using the addCookie method and stored by browsers. On subsequent requests, browsers return cookies to servers which can then be retrieved using the getCookies method. Cookies have attributes like names, values, expiration times and paths.
Java EE 8 security and JSON binding APIAlex Theedom
Java EE Security and JSON Binding are two new APIs in the Java EE 8 release. The security API provides consistencies between containers with a simple annotation-driven model while JSON Binding completes Java EEs JSON APIs and is a real alternative to Jackson and Gson. In this presentation, I will walk through coding examples from both APIs and by the end of the presentation, you will understand how these two new APIs add to the advancement of the Java EE platform.
This document discusses session tracking techniques in servlets. It begins by defining a session as a series of related interactions between a client and server over time. Session tracking is needed to maintain state since HTTP is stateless. The main techniques discussed are HTTP session, cookies, hidden form fields, and URL rewriting. HTTP session uses a session ID to identify users and store data server-side. Cookies store data client-side but only text. Hidden form fields also store data on the server. URL rewriting passes data in the URL. The document provides details on implementing each technique.
The document provides an introduction to using PHP sessions and cookies to maintain state across multiple requests. It discusses how cookies store small amounts of data on the client browser, while sessions allow storing data on the server. The document then provides steps to create a login system using sessions: 1) Check login credentials and create a session variable on successful login, 2) Display user profile details on the profile page by fetching the session variable, 3) Include a logout link that destroys the session to end the user session. Key differences between cookies and sessions are also summarized - cookies are stored on the client while sessions are stored on the server.
Session and cookies knowledge is very important for a web developer. In these slides we are going to explore basics of Sessions and Cookies in PHP. How to create and destroy a session. How to create and destroy a cookie. How sessions and cookies are stored.
The document discusses session tracking techniques in servlets. It describes four main techniques: cookies, hidden form fields, URL rewriting, and HTTP sessions. Cookies are the simplest technique and involve assigning a unique session ID to each client as a cookie. Hidden form fields maintain state by storing information in hidden form fields and transmitting it across requests. URL rewriting appends a session ID to the URL. HTTP sessions involve saving client-specific information on the server side in an HTTP session object.
Cookies and sessions allow storing and retrieving data across multiple requests in PHP. Cookies are stored on the client side while sessions are stored on the server side. Cookies are created using the setcookie() function and retrieved using the $_COOKIE superglobal array. Sessions are created using the session_start() function and data is stored in the $_SESSION superglobal array. Both cookies and sessions can be deleted by unset() or by letting them expire.
This document provides an overview of Java servlets including:
- What a Java servlet is and why they are used to generate dynamic web content
- The basic servlet architecture including the servlet lifecycle and how requests are handled
- Examples of simple servlets like one that displays a greeting based on a request parameter and an image counter servlet
- How servlets are deployed and configured using the Eclipse IDE
Struts has outgrown its reputation as a simple web framework and has become more of a brand. Because of this, two next generation frameworks are being developed within the project: Shale and Action 2.0. Action 2.0 is based on WebWork, and though its backing beans are similar to JSF, its architecture is much simpler, and easier to use.
Migrating to Struts Action 2.0 is more about unlearning Struts than it is about learning the "WebWork Way". Once you understand how simple WebWork is, you'll find that Struts Action 2.0 is a powerful framework that supports action-based navigation, page-based navigation, AOP/Interceptors, components and rich Ajax support.
Come to this session to see code comparisons and learn about migration strategies to use the kick-ass web framework of 2006.
This document summarizes sessions, cookies, and GET and POST methods in web development. It explains that cookies are small files stored on a user's computer that can track users across websites. Sessions allow servers to store temporary data during a user's browsing session. The document outlines how to create, retrieve, and delete both cookies and sessions in PHP. It also describes the differences between the GET and POST methods for submitting form data, including that GET appends data to the URL while POST does not.
This document provides an overview of Java servlets including:
- Servlets allow Java code to generate dynamic web page content in response to HTTP requests. They are hosted by a servlet container inside a web server.
- The servlet lifecycle involves initialization, processing requests, and destruction. Common methods are init(), service(), destroy().
- The javax.servlet and javax.servlet.http APIs provide interfaces and classes for building servlets and handling HTTP requests/responses.
- Servlets can collaborate by forwarding or redirecting requests between servlets using methods like RequestDispatcher and HttpServletResponse.
- Session management techniques like cookies, hidden fields, and HTTP sessions allow servlets to maintain state across
Cookies are small pieces of information stored by the browser on the user's device between requests. A cookie has a name, value, and optional attributes. When a servlet response includes a cookie, the browser stores it and sends it back with subsequent requests, allowing the server to identify returning users. There are two types of cookies: non-persistent cookies are removed when the browser closes, while persistent cookies remain until the user logs out. Cookies provide a simple way to maintain state but require cookies to be enabled and can only store text data.
Cookies allow servers to store and retrieve information on the client side. Servers send cookies in HTTP responses and browsers send the cookie back with subsequent requests. There are two main methods for managing sessions between clients and servers - using session cookies or URL rewriting. With session cookies, the server embeds a session ID in a cookie it sends to the client, and the client sends the cookie back on future requests to identify the session. With URL rewriting, the server encodes the session ID directly into the URLs of links and redirects. The session data itself is stored server-side and associated with the client via the session ID.
The document provides an overview of Struts 2 including:
1. The architecture of Struts 2 which uses patterns like front controller and composite.
2. A basic "Hello World" example demonstrating creating an action class and mapping it in struts.xml.
3. The Action interface and ActionSupport class which provides common functionality like validation. ActionSupport implements interfaces like Validateable.
4. Aware interfaces like SessionAware which allow injecting objects like the session into actions.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
In this chapter, we will discuss session tracking in JSP. HTTP is a "stateless" protocol which means each time a client retrieves a Webpage, the client opens a separate connection to the Web server and the server automatically does not keep any record of previous client request.
Maintaining Session Between Web Client And Server
Let us now discuss a few options to maintain the session between the Web Client and the Web Server −
Cookies
A webserver can assign a unique session ID as a cookie to each web client and for subsequent requests from the client they can be recognized using the received cookie.
Session tracking allows servers to maintain state about a user's requests and keep track of multiple conversations (S1). It is commonly used in e-commerce to track a user's cart as they shop (S1). There are three main ways to implement session tracking: using cookies, URL rewriting, or the session API built into servlets (S2). The session API makes it easy to store and retrieve session attributes and determine if it is a new session (S3). Sessions can be invalidated manually or automatically if inactive for a period of time.
The document discusses different state management techniques in ASP.NET. It describes client-side techniques like hidden fields, view state, cookies, query strings, and control state. It also describes server-side techniques like session state and application state. Session state stores and retrieves data for each user session while application state stores data accessible to all users. Examples are provided for hidden fields, view state, cookies, query strings, session state, and application state.
Authentication in Svelte using cookies.pptxKnoldus Inc.
Svelte streamlines authentication with cookies, offering a secure and seamless user experience. Effortlessly manage sessions by storing tokens in cookies, ensuring persistent logins. With Svelte's simplicity, implement robust authentication mechanisms, enhancing user security and interaction.
- Cookies allow servers to identify repeat visitors and customize websites by storing small amounts of data on a user's device. They help enable e-commerce sessions and avoid requiring usernames and passwords. However, they also raise privacy concerns if sensitive personal information is stored in cookies or they are shared across sites.
- Cookies are created and sent by servers using the addCookie method and stored by browsers. On subsequent requests, browsers return cookies to servers which can then be retrieved using the getCookies method. Cookies have attributes like names, values, expiration times and paths.
Java EE 8 security and JSON binding APIAlex Theedom
Java EE Security and JSON Binding are two new APIs in the Java EE 8 release. The security API provides consistencies between containers with a simple annotation-driven model while JSON Binding completes Java EEs JSON APIs and is a real alternative to Jackson and Gson. In this presentation, I will walk through coding examples from both APIs and by the end of the presentation, you will understand how these two new APIs add to the advancement of the Java EE platform.
This document discusses session tracking techniques in servlets. It begins by defining a session as a series of related interactions between a client and server over time. Session tracking is needed to maintain state since HTTP is stateless. The main techniques discussed are HTTP session, cookies, hidden form fields, and URL rewriting. HTTP session uses a session ID to identify users and store data server-side. Cookies store data client-side but only text. Hidden form fields also store data on the server. URL rewriting passes data in the URL. The document provides details on implementing each technique.
The document provides an introduction to using PHP sessions and cookies to maintain state across multiple requests. It discusses how cookies store small amounts of data on the client browser, while sessions allow storing data on the server. The document then provides steps to create a login system using sessions: 1) Check login credentials and create a session variable on successful login, 2) Display user profile details on the profile page by fetching the session variable, 3) Include a logout link that destroys the session to end the user session. Key differences between cookies and sessions are also summarized - cookies are stored on the client while sessions are stored on the server.
Session and cookies knowledge is very important for a web developer. In these slides we are going to explore basics of Sessions and Cookies in PHP. How to create and destroy a session. How to create and destroy a cookie. How sessions and cookies are stored.
The document discusses session tracking techniques in servlets. It describes four main techniques: cookies, hidden form fields, URL rewriting, and HTTP sessions. Cookies are the simplest technique and involve assigning a unique session ID to each client as a cookie. Hidden form fields maintain state by storing information in hidden form fields and transmitting it across requests. URL rewriting appends a session ID to the URL. HTTP sessions involve saving client-specific information on the server side in an HTTP session object.
Cookies and sessions allow storing and retrieving data across multiple requests in PHP. Cookies are stored on the client side while sessions are stored on the server side. Cookies are created using the setcookie() function and retrieved using the $_COOKIE superglobal array. Sessions are created using the session_start() function and data is stored in the $_SESSION superglobal array. Both cookies and sessions can be deleted by unset() or by letting them expire.
This document provides an overview of Java servlets including:
- What a Java servlet is and why they are used to generate dynamic web content
- The basic servlet architecture including the servlet lifecycle and how requests are handled
- Examples of simple servlets like one that displays a greeting based on a request parameter and an image counter servlet
- How servlets are deployed and configured using the Eclipse IDE
Struts has outgrown its reputation as a simple web framework and has become more of a brand. Because of this, two next generation frameworks are being developed within the project: Shale and Action 2.0. Action 2.0 is based on WebWork, and though its backing beans are similar to JSF, its architecture is much simpler, and easier to use.
Migrating to Struts Action 2.0 is more about unlearning Struts than it is about learning the "WebWork Way". Once you understand how simple WebWork is, you'll find that Struts Action 2.0 is a powerful framework that supports action-based navigation, page-based navigation, AOP/Interceptors, components and rich Ajax support.
Come to this session to see code comparisons and learn about migration strategies to use the kick-ass web framework of 2006.
This document summarizes sessions, cookies, and GET and POST methods in web development. It explains that cookies are small files stored on a user's computer that can track users across websites. Sessions allow servers to store temporary data during a user's browsing session. The document outlines how to create, retrieve, and delete both cookies and sessions in PHP. It also describes the differences between the GET and POST methods for submitting form data, including that GET appends data to the URL while POST does not.
This document provides an overview of Java servlets including:
- Servlets allow Java code to generate dynamic web page content in response to HTTP requests. They are hosted by a servlet container inside a web server.
- The servlet lifecycle involves initialization, processing requests, and destruction. Common methods are init(), service(), destroy().
- The javax.servlet and javax.servlet.http APIs provide interfaces and classes for building servlets and handling HTTP requests/responses.
- Servlets can collaborate by forwarding or redirecting requests between servlets using methods like RequestDispatcher and HttpServletResponse.
- Session management techniques like cookies, hidden fields, and HTTP sessions allow servlets to maintain state across
Cookies are small pieces of information stored by the browser on the user's device between requests. A cookie has a name, value, and optional attributes. When a servlet response includes a cookie, the browser stores it and sends it back with subsequent requests, allowing the server to identify returning users. There are two types of cookies: non-persistent cookies are removed when the browser closes, while persistent cookies remain until the user logs out. Cookies provide a simple way to maintain state but require cookies to be enabled and can only store text data.
Cookies allow servers to store and retrieve information on the client side. Servers send cookies in HTTP responses and browsers send the cookie back with subsequent requests. There are two main methods for managing sessions between clients and servers - using session cookies or URL rewriting. With session cookies, the server embeds a session ID in a cookie it sends to the client, and the client sends the cookie back on future requests to identify the session. With URL rewriting, the server encodes the session ID directly into the URLs of links and redirects. The session data itself is stored server-side and associated with the client via the session ID.
The document provides an overview of Struts 2 including:
1. The architecture of Struts 2 which uses patterns like front controller and composite.
2. A basic "Hello World" example demonstrating creating an action class and mapping it in struts.xml.
3. The Action interface and ActionSupport class which provides common functionality like validation. ActionSupport implements interfaces like Validateable.
4. Aware interfaces like SessionAware which allow injecting objects like the session into actions.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Training: ISO/IEC 27001 Information Security Management System - EN | PECB
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हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
2. ⚫Session simply means a particular interval of
time.
⚫Session Tracking is a way to maintain state
(data) of an user. It is also known as session
management in servlet.
⚫Http protocol is a stateless so we need to
maintain state using session tracking techniques.
Each time user requests to the server, server
treats the request as the new request. So we
need to maintain the state of an user to recognize
to particular user.
SESSION TRACKING
3. HTTP is stateless that means each request is
considered as the new request. It is shown in
the figure given below:
4. Why use Session Tracking?
⚫To recognize the user It is used to recognize the
particular user.
Session Tracking Techniques
There are four techniques used in Session tracking:
⚫Cookies
⚫Hidden Form Field
⚫URL Rewriting
⚫HttpSession
5. Cookies in Servlet
⚫A cookie is a small piece of information that is
persisted between the multiple client requests.
⚫A cookie has a name, a single value, and optional
attributes such as a comment, path and domain
qualifiers, a maximum age, and a version
number.
6. How Cookie works
⚫ By default, each request is considered as a new request.
In cookies technique, we add cookie with response from
the servlet. So cookie is stored in the cache of the
browser. After that if request is sent by the user, cookie is
added with request by default. Thus, we recognize the
user as the old user.
7. Types of Cookie
There are 2 types of cookies in servlets.
1. Non-persistent cookie
2. Persistent cookie
Non-persistent cookie
⚫It is valid for single session only. It is removed
each time when user closes the browser.
Persistent cookie
⚫It is valid for multiple session . It is not removed
each time when user closes the browser. It is
removed only if user logout or signout.
8. ⚫Advantage of Cookies
1. Simplest technique of maintaining the state.
2. Cookies are maintained at client side.
Disadvantage of Cookies
1. It will not work if cookie is disabled from the
browser.
2. Only textual information can be set in Cookie
object.
10. Constructor of Cookie class
Constructor Description
Cookie() constructs a cookie.
Cookie(String name, String
value)
constructs a cookie with a
specified name and value.
11. Useful Methods FoR Cookie class
Method Description
public void setMaxAge(int expiry) Sets the maximum age of the
cookie in seconds.
public String getName() Returns the name of the cookie. The
name cannot be changed after
creation.
public String getValue() Returns the value of the cookie.
public void setName(String name) changes the name of the cookie.
public void setValue(String value) changes the value of the cookie.
12. How to create Cookie?
⚫Cookie ck=new Cookie("user","Sam");
//creating cookie object
⚫response.addCookie(ck);
//adding cookie in th e response
13. How to delete Cookie?
⚫Cookie ck=new Cookie("user","");
//deleting value of cookie
⚫ck.setMaxAge(0);
//changing the maximum age to 0 seconds
⚫response.addCookie(ck);
//adding cookie in the re sponse
14. How to get Cookies?
⚫Cookie ck[]=request.getCookies();
⚫for(int i=0;i<ck.length;i++){
⚫ out.print("<br>"+ck[i].getName()+" "+ck[i].get
Value());//printing name and value of cookie
}
15. Simple example of Servlet Cookies
⚫ In this example, we are storing the name of the user in the cookie object
and accessing it in another servlet. As we know well that session
corresponds to the particular user. So if you access it from too many
browsers with different values, you will get the different value.
20. Hidden Form Field
In case of Hidden Form Field a hidden (invisible)
textfield is used for maintaining the state of an user.
In such case, we store the information in the hidden
field and get it from another servlet.
This approach is better if we have to submit form in all
the pages and we don't want to depend on the browser.
21. Hidden Form Field
Application of hidden form field
It is widely used in comment form of a website.
In such case, we store page id or page name in the hidden
field so that each page can be uniquely identified
Advantage of Hidden Form Field
It will always work whether cookie is disabled or not.
22. Hidden Form Field
Disadvantage of Hidden Form Field:
•It is maintained at server side.
•Extra form submission is required on each pages.
•Only textual information can be used.
24. URL Rewriting
•In URL rewriting, we append a token or identifier to
the URL of the next Servlet or the next resource.
•We can send parameter name/value pairs using the
following format:
url?name1=value1&name2=value2&??
A name and a value is separated using an equal =
sign, a parameter name/value pair is separated from
another parameter using the ampersand (&).
25. URL Rewriting
When the user clicks the hyperlink, the parameter
name/value pairs will be passed to the server.
26. URL Rewriting
Advantage of URL Rewriting
It will always work whether cookie is disabled or not
(browser independent).
Extra form submission is not required on each pages.
Disadvantage of URL Rewriting
It will work only with links.
It can send Only text information.