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Spring-Boot で Cookie の付与・取得・削除

Posted at

表題の通りです。

Cookie の付与

レスポンスボディにCookieを付与すればよい。

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Cookie;

public String cookieTest(HttpServletResponse response) throws Exception {
    Cookie cookie = new Cookie("id", "this_is_the_testmessage"); // Cookieの作成
    cookie.setMaxAge(265 * 24 * 60 * 60); // Cookieの残存期間(秒数)
    cookie.setPath("/"); // Cookieの適用対象となるサーバ上のパス
    response.addCookie(cookie);
    return "content";
}

Cookie の取得

Cookieの取得は、Spring-bootでは@CookieValueアノテーションにて行う。

import org.springframework.web.bind.annotation.CookieValue;

public ModelAndView readCookie(@CookieValue(value="id", required=false) String sid, ModelAndView mav) {
  ...
}

Cookie の削除

Cookieの削除は、削除したいCookieの値をnullにし、残存期間を0秒に設定することで行う。したがって、以下のような手順となる。

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Cookie;

public String deleteCookie(HttpServletRequest request, HttpServletResponse response) throws Exception {
    Cookie cookies = request.getCookies();
    for (Cookie cookie : cookies) {
        if ("id".equals(cookie.getName())) {
            cookie.setMaxAge(0);
            cookie.setPath("/");
            response.addCookie(cookie);
        }
    }
    return "content";
}
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