Session
@WebServlet({ "/someServlet", "/some" })
public class someServlet extends HttpServlet {
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession();
String sessionId = session.getId();
System.out.println(sessionId);
Integer count = (Integer) session.getAttribute("count");
if(count==null){
count=1;
}else{
count++;
}
session.setAttribute("count", count);
out.println("你是第:"+count+"次访问");
out.close();
}
}