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| 1 | +package PartTwo.CookiesServlet; |
| 2 | +/* Текущая настройка у меня http://localhost:8080/my-first-cookies */ |
| 3 | +import jakarta.servlet.ServletException; |
| 4 | +import jakarta.servlet.annotation.WebServlet; |
| 5 | +import jakarta.servlet.http.Cookie; |
| 6 | +import jakarta.servlet.http.HttpServlet; |
| 7 | +import jakarta.servlet.http.HttpServletRequest; |
| 8 | +import jakarta.servlet.http.HttpServletResponse; |
| 9 | + |
| 10 | +import java.io.IOException; |
| 11 | +import java.io.PrintWriter; |
| 12 | +import java.nio.charset.StandardCharsets; |
| 13 | +import java.util.Arrays; |
| 14 | +import java.util.concurrent.atomic.AtomicInteger; |
| 15 | + |
| 16 | +@WebServlet("/my-first-cookies") |
| 17 | +public class CookiesServlet extends HttpServlet { |
| 18 | + private static final String UNIQUE_ID = "userId"; |
| 19 | + private static final AtomicInteger counter = new AtomicInteger(); |
| 20 | + |
| 21 | + @Override |
| 22 | + protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { |
| 23 | + |
| 24 | + Cookie[] clientReqCookies = req.getCookies(); |
| 25 | + |
| 26 | + if (clientReqCookies == null || Arrays.stream(clientReqCookies). |
| 27 | + filter(cookie -> UNIQUE_ID.equals(cookie.getName())). |
| 28 | + findFirst(). |
| 29 | + isEmpty()) { |
| 30 | + Cookie respCookieFromServer = new Cookie(UNIQUE_ID,"1"); |
| 31 | + respCookieFromServer.setPath("/my-first-cookies"); |
| 32 | + respCookieFromServer.setMaxAge(1600); |
| 33 | + resp.addCookie(respCookieFromServer); |
| 34 | + counter.incrementAndGet(); |
| 35 | + } |
| 36 | + |
| 37 | + resp.setContentType("text/html"); |
| 38 | + resp.setCharacterEncoding(StandardCharsets.UTF_8.name()); |
| 39 | + |
| 40 | + try(PrintWriter writeToResponseHtml = resp.getWriter()){ |
| 41 | + writeToResponseHtml.write(counter.get()); |
| 42 | + } |
| 43 | + } |
| 44 | +} |
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