9:00am-11:00pm
web http request and response;
request sample:
GET / HTTP/1.1
Host: www.sina.com.cn
User-Agent: Mozilla/5.0 xxx
Accept: */*response sample
HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 21932
Content-Encoding: gzip
Cache-Control: max-age=300
<html>...data...servlet API from java EE which needs Maven to import with a pom.xml file. run on Tomcat server.
@WebServlet(urlPatterns="/hello")
**servlet extents Httpservlet{
doGet(HttpServletRequest, HttpServletResonse){}
doPost(HttpServletRequest, HttpServletResonse){}
}
redirect and forward
redirect can be used to update a web
forward can be used to reuse a function in one servlet
Session and Cookie
A session for login and logout and cookie can use the default language setting
JSP: java server pages .jsp ,equal to a servlet functionally.
build-in parameter: out; session; request.
combine the weaknesses and strengths of the servlet and JSP to realize the MVC
filter: chain.doFilter(request,response)