HttpServletRequest
 request 
HttpServletResponse
 response
Cookie
 cookie = new Cookie("cookiename","cookievalue");
response.addCookie(cookie);

cookie
 = new Cookie("cookiename","cookievalue");
 
cookie.setMaxAge(3600);
 
//設(shè)置路徑，這個路徑即該工程下都可以訪問該cookie
 如果不設(shè)置路徑，那么只有設(shè)置該cookie路徑及其子路徑可以訪問
 
cookie.setPath("/");
response.addCookie(cookie);

Cookie[]
 cookies = request.getCookies();//這樣便可以獲取一個cookie數(shù)組
for(Cookie
 cookie : cookies){
  cookie.getName();//
 get the cookie name
  cookie.getValue();
//
 get the cookie value
}

/**
 *
 設(shè)置cookie
 *
 @param response
 *
 @param name cookie名字
 *
 @param value cookie值
 *
 @param maxAge cookie生命周期 以秒為單位
 */
public static void addCookie(HttpServletResponse
 response,String name,String value,int maxAge){
  Cookie
 cookie = new Cookie(name,value);
  cookie.setPath("/");
  if(maxAge>0) 
 cookie.setMaxAge(maxAge);
  response.addCookie(cookie);
}

/**
 *
 根據(jù)名字獲取cookie
 *
 @param request
 *
 @param name cookie名字
 *
 @return
 */
public static Cookie
 getCookieByName(HttpServletRequest request,String name){
  Map<String,Cookie>
 cookieMap = ReadCookieMap(request);
  if(cookieMap.containsKey(name)){
    Cookie
 cookie = (Cookie)cookieMap.get(name);
    return cookie;
  }else{
    return null;
  } 
}
 
 
 
/**
 *
 將cookie封裝到Map里面
 *
 @param request
 *
 @return
 */
private static Map<String,Cookie>
 ReadCookieMap(HttpServletRequest request){ 
  Map<String,Cookie>
 cookieMap = new HashMap<String,Cookie>();
  Cookie[]
 cookies = request.getCookies();
  if(null!=cookies){
    for(Cookie
 cookie : cookies){
      cookieMap.put(cookie.getName(),
 cookie);
    }
  }
  return cookieMap;
}