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Java EE Practical (Servlet (lifecycle (service() (doGet(), doPost()),…
Java EE Practical
Servlet
lifecycle
init()
service()
doGet()
doPost()
destroy()
foundation technology
entry point
form action
serlet_name
servlet
RequestDispatcher
forwards same req & resp objects
SendRedirect
browser is redirected, creates new request
parameter passing
URL rewriting
add params in url of sendRedirect()
session
req.getSession().setAttribute()
stored in server during session
cookies
create cookie in servlet
sent to browser for storage
sent to server everytime
Runtime
Tomcat
converts
HTTP Request
httpServletRequest
httpServletResponse
HTTP Response
JDK
HTML
form action
jsp
jsp_name
.jsp
servlet
/
servlet_name