springboot封装JsonUtil,CookieUtil工具类代码实例

public class JsonUtil {
  private static ObjectMapper objectMapper = new ObjectMapper();

  public static String objectToString(Object object) throws JsonProcessingException {
    return objectMapper.writeValueAsString(object);
  }

  public static <T> T stringToObject(String json,Class<T> object) throws IOException {
    return objectMapper.readValue(json,object);
  }
}

public class CookieUtil {
  public static String getCookie(HttpServletRequest request, String cookieName){

    Cookie[] cookies = request.getCookies();
    if(cookies != null){
      for(Cookie cookie : cookies){
        if(cookie.getName().equals(cookieName)){
          return cookie.getValue();
        }
      }
    }

    return null;
  }

  public static void setCookie(HttpServletResponse response, String cookieName, String value,int cookieMaxAge){
    Cookie cookie = new Cookie(cookieName,value);
    cookie.setPath("/");
    cookie.setMaxAge(cookieMaxAge);
    response.addCookie(cookie);
  }

  public static void deleteCookie(HttpServletResponse response, String cookieName){
    setCookie(response,cookieName,null,0);
  }
}