cookie工具cookieUtil

package cn.lijun.core.util;

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;

/**
*

• Cookie 工具类

*/
public final class CookieUtil {

/**

• 得到Cookie的值, 不编码
• @param request
• @param cookieName
• @return
  */
  public static String getCookieValue(HttpServletRequest request, String cookieName) {
  return getCookieValue(request, cookieName, false);
  }

/**

• 得到Cookie的值,
• @param request
• @param cookieName
• @return
  */
  public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {
  Cookie[] cookieList = request.getCookies();
  if (cookieList == null || cookieName == null) {
  return null;
  }
  String retValue = null;
  try {
  for (int i = 0; i < cookieList.length; i++) {
  if (cookieList[i].getName().equals(cookieName)) {
  if (isDecoder) {
  retValue = URLDecoder.decode(cookieList[i].getValue(), “UTF-8”);
  } else {
  retValue = cookieList[i].getValue();
  }
  break;
  }
  }
  } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
  }
  return retValue;
  }

/**

• 得到Cookie的值,
• @param request
• @param cookieName
• @return
  */
  public static String getCookieValue(HttpServletRequest request, String cookieName, String encodeString) {
  Cookie[] cookieList = request.getCookies();
  if (cookieList == null || cookieName == null) {
  return null;
  }
  String retValue = null;
  try {
  for (int i = 0; i < cookieList.length; i++) {
  if (cookieList[i].getName().equals(cookieName)) {
  retValue = URLDecoder.decode(cookieList[i].getValue(), encodeString);
  break;
  }
  }
  } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
  }
  return retValue;
  }

/**

• 设置Cookie的值 不设置生效时间默认浏览器关闭即失效,也不编码
  */
  public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
  String cookieValue) {
  setCookie(request, response, cookieName, cookieValue, -1);
  }

/**

• 设置Cookie的值 在指定时间内生效,但不编码
  */
  public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
  String cookieValue, int cookieMaxage) {
  setCookie(request, response, cookieName, cookieValue, cookieMaxage, false);
  }

/**

• 设置Cookie的值 不设置生效时间,但编码
  */
  public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
  String cookieValue, boolean isEncode) {
  setCookie(request, response, cookieName, cookieValue, -1, isEncode);
  }

/**

• 设置Cookie的值 在指定时间内生效, 编码参数
  */
  public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
  String cookieValue, int cookieMaxage, boolean isEncode) {
  doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode);
  }

/**

• 设置Cookie的值 在指定时间内生效, 编码参数(指定编码)
  */
  public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
  String cookieValue, int cookieMaxage, String encodeString) {
  doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString);
  }

/**

• 删除Cookie带cookie域名
  */
  public static void deleteCookie(HttpServletRequest request, HttpServletResponse response,
  String cookieName) {
  doSetCookie(request, response, cookieName, “”, -1, false);
  }

/**

• 设置Cookie的值，并使其在指定时间内生效
• @param cookieMaxage cookie生效的最大秒数
  */
  private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
  String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) {
  try {
  if (cookieValue == null) {
  cookieValue = “”;
  } else if (isEncode) {
  cookieValue = URLEncoder.encode(cookieValue, “utf-8”);
  }
  Cookie cookie = new Cookie(cookieName, cookieValue);
  if (cookieMaxage > 0)
  cookie.setMaxAge(cookieMaxage);
  if (null != request) {// 设置域名的cookie
  String domainName = getDomainName(request);
  System.out.println(domainName);
  if (!“localhost”.equals(domainName)) {
  cookie.setDomain(domainName);
  }
  }
  cookie.setPath("/");
  response.addCookie(cookie);
  } catch (Exception e) {
  e.printStackTrace();
  }
  }

/**

• 设置Cookie的值，并使其在指定时间内生效
• @param cookieMaxage cookie生效的最大秒数
  */
  private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
  String cookieName, String cookieValue, int cookieMaxage, String encodeString) {
  try {
  if (cookieValue == null) {
  cookieValue = “”;
  } else {
  cookieValue = URLEncoder.encode(cookieValue, encodeString);
  }
  Cookie cookie = new Cookie(cookieName, cookieValue);
  if (cookieMaxage > 0)
  cookie.setMaxAge(cookieMaxage);
  if (null != request) {// 设置域名的cookie
  String domainName = getDomainName(request);
  System.out.println(domainName);
  if (!“localhost”.equals(domainName)) {
  cookie.setDomain(domainName);
  }
  }
  cookie.setPath("/");
  response.addCookie(cookie);
  } catch (Exception e) {
  e.printStackTrace();
  }
  }

/**

• 得到cookie的域名
  */
  private static final String getDomainName(HttpServletRequest request) {
  String domainName = null;

String serverName = request.getRequestURL().toString();
if (serverName == null || serverName.equals("")) {
domainName = “”;
} else {
serverName = serverName.toLowerCase();
serverName = serverName.substring(7);
final int end = serverName.indexOf("/");
serverName = serverName.substring(0, end);
final String[] domains = serverName.split("\.");
int len = domains.length;
if (len > 3) {
// www.xxx.com.cn
domainName = “.” + domains[len - 3] + “.” + domains[len - 2] + “.” + domains[len - 1];
} else if (len <= 3 && len > 1) {
// xxx.com or xxx.cn
domainName = “.” + domains[len - 2] + “.” + domains[len - 1];
} else {
domainName = serverName;
}
}

if (domainName != null && domainName.indexOf("😊 > 0) {
String[] ary = domainName.split("\😊;
domainName = ary[0];
}
return domainName;
}

}