CookieUtil类

import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.net.URLEncoder; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class CookieUtil { /** * 增删改Cookie * @param key * @param value * @param maxAge * @return * @throws UnsupportedEncodingException */ public Cookie getCookie(String key, String value, int maxAge) throws UnsupportedEncodingException { value = URLEncoder.encode(value, "GB18030"); Cookie cookie = new Cookie(key, value); cookie.setMaxAge(maxAge); cookie.setPath("/"); return cookie; } /** * 查询指定cookie * @param key * @param cookie * @return * @throws UnsupportedEncodingException */ public String getCookie(String key, Cookie cookie) throws UnsupportedEncodingException { if (key.equals(cookie.getName())) { return URLDecoder.decode(cookie.getValue(), "GB18030"); } return null; } }