我使用的cookie管理方法
public static Cookie getCookieByName(final String name) {
// Fetch all cookies from the request
Cookie[] cookies = VaadinService.getCurrentRequest().getCookies();
// Iterate to find cookie by its name
for (Cookie cookie : cookies) {
if (name.equals(cookie.getName())) {
return cookie;
}
}
return null;
}
public static Cookie createCookie(final String name, final String value, final int maxAge) {
// Create a new cookie
Cookie cookie = new Cookie(name, value);
cookie.setMaxAge(maxAge);
// Set the cookie path.
cookie.setPath(VaadinService.getCurrentRequest().getContextPath());
// Save cookie
VaadinService.getCurrentResponse().addCookie(cookie);
return cookie;
}
public static Cookie updateCookieValue(final String name, final String value) {
// Create a new cookie
Cookie cookie = getCookieByName(name);
cookie.setValue(value);
// Save cookie
VaadinService.getCurrentResponse().addCookie(cookie);
return cookie;
}
public static void destroyCookieByName(final String name) {
Cookie cookie = getCookieByName(name);
if (cookie != null) {
cookie.setValue(null);
// By setting the cookie maxAge to 0 it will deleted immediately
cookie.setMaxAge(0);
cookie.setPath("/");
VaadinService.getCurrentResponse().addCookie(cookie);
}
}
我可以为Cookie选择,创建和销毁,但我无法使用方法updateCookieValue(final String name, final String value)
更新Cookie的值。我在Firefox和Chrome浏览器中都测试为updateCookieValue(LOCALE_COOKIE, "en");
,但浏览器的区域设置值没有变化。我的方法有什么问题?
答案 0 :(得分:2)
如果您在推送时使用Vaadin,则只能在执行UI.init()方法时更新Cookie。目前没有针对此问题的解决方法。