import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class SessionTest1 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
response.setContentType("text/html; charset=Shift_JIS");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession(false);
out.println("");
out.println("");
out.println("セッションテスト");
out.println("");
out.println("");
if (session == null){
out.println("初回訪問です
");
session = request.getSession(true);
session.setAttribute("visited", "1");
}else{
String visitedStr = (String)session.getAttribute("visited");
int visited = Integer.parseInt(visitedStr);
visited++;
out.println("訪問回数は");
out.println(visited);
out.println("回目です
");
session.setAttribute("visited", Integer.toString(visited));
}
out.println("再表示");
out.println("");
out.println("");
}
}