import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class SessionTest 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("セッションは存在しません。開始します
");
session = request.getSession(true);
}else{
out.println("セッション開始してます
");
}
out.println("再表示");
out.println("");
out.println("");
}
}