JSP & Servlets
HTTP Basics
HTTP Basics
  • Setting up
  • Servlet Part 1
  • Servlet Part 2
  • Understanding the servlet
  • Servlet XML Configuration
  • POST method and passing parameters
  • Passing more parameters
  • Understanding GET and POST
  • Request, Session and Context Part -1
  • Request , Session and Context Part - 2
  • Understanding init, service and ServletConfig
  • Hello JSP
  • Understanding JSP
  • JSP Page directives
  • Scopes in JSP and the PageContext Object
  • Using JSP init and initParams
  • Understanding MVC pattern
  • PART -1Writing an MVC app
  • PART -2 Writing an MVC app
  • PART - 3 Using Model object in the MVC app
  • PART - 4 Using RequestDispatcher in the MVC app
  • JSTL
  • Request Parameters with setProperty tag
  • Project Work
  • HTTP
    • HTTP Overview
    • HTML
    • CSS
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  • GET : is used to get resource from the server:
  • POST : is user to create resource on the server:
  • HttpServlet is a java specification :

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Understanding GET and POST

PreviousPassing more parametersNextRequest, Session and Context Part -1

Last updated 6 years ago

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GET : is used to get resource from the server:

Ex : Just change the method from post to get in the form and hit the URL.

Observation :

URL after submitting form :

http://localhost:8080/SimpleServletProject/xmlservletpath?userName=Mohit&lastName=malhotra&profession=Manager&countries=India&cities=Mumbai

1) All the parameters are sent as query parameters in the GET request.

2) Refresh the browser and the GET operation will have same effect , browser will not warn us.

POST : is user to create resource on the server:

Observation :

On Refreshing we got the confirm Resubmission message from the browser :

HttpServlet is a java specification :

Download Apache tomcat Doc : ( from source code distribution)

Extract it

Attach source : (Option will come when you try to open HttpServlet class )

Check all the methods of HttpServlet provided by Tomcat:

If we do not override doGet or doPost method then tomcat will call its own doGet or doPost methods.