* 設置cookie
* @param response
* @param name cookie名字
* @param value cookie值
* @param maxAge cookie生命週期 以秒爲單位
*/
public void addCookie(HttpServletResponse response,String value){
Cookie cookie = new Cookie("userid",“213231”);
cookie.setMaxAge(1*24*60*60);// 設置爲1day
cookie.setPath("/");
System.out.println("已添加===============");
response.addCookie(cookie);
}
/**
* 根據Cookies獲取userId 判斷用戶是否登錄 如果登錄則返回userid 用於獲取User對象 否則返回用戶未登錄是的處理
*/
public static String getUser(HttpServletRequest request) {
String bbsUserId = "";
// 通過頁面Cookies獲取的用戶Id
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (int i = 0; i < cookies.length; i++) { //遍歷cookie
Cookie c = cookies[i];
if (c.getName().equalsIgnoreCase("userid")) {
bbsUserId = c.getValue();
}
}
}
return bbsUserId;
}
然後根據返回的bbsUserId去獲取想要存儲的數據對象,得到數據