com.yuweix.kuafu.session.CookiesUtil Maven / Gradle / Ivy
package com.yuweix.kuafu.session;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Cookie操作工具
* @author yuwei
*/
public abstract class CookiesUtil {
/**
* 从Cookie中根据key取值
* @param key
* @return
*/
public static String findValueByKey(HttpServletRequest request, String key) {
if (request == null) {
return null;
}
Cookie[] cookies = request.getCookies();
if (cookies == null || cookies.length <= 0) {
return null;
}
for (Cookie cookie: cookies) {
if (cookie.getName().equals(key)) {
return cookie.getValue();
}
}
return null;
}
/**
* @param name Cookie名称 。
* @param value Cookie的值。
*/
public static void addCookie(HttpServletRequest request, HttpServletResponse response, String name, String value) {
addCookie(request, response, name, value, null, null, SessionConstant.COOKIE_MAX_AGE_DEFAULT);
}
/**
* @param name cookie名称
* @param value cookie值
* @param domain cookie域名 默认：null
* @param contextPath cookie路径。 默认："/"
* @param maxAge 有效时间。
*/
public static void addCookie(HttpServletRequest request, HttpServletResponse response, String name, String value
, String domain, String contextPath, int maxAge) {
if (request == null || response == null) {
throw new RuntimeException("Request and response can not be null.");
}
Cookie cookie = new Cookie(name, value);
cookie.setMaxAge(maxAge);
cookie.setSecure(request.isSecure());
if (contextPath == null || contextPath.isEmpty()) {
contextPath = request.getContextPath();
}
if (contextPath == null || contextPath.isEmpty()) {
contextPath = "/";
}
cookie.setPath(contextPath);
if (domain != null && !domain.isEmpty()) {
cookie.setDomain(domain);
}
response.addCookie(cookie);
}
/**
* 销毁Cookie
*/
public static void invalidate(HttpServletRequest request, HttpServletResponse response) {
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for(int i = 0; i < cookies.length; i++) {
Cookie cookie = new Cookie(cookies[i].getName(), null);
cookie.setValue("");
cookie.setMaxAge(0);
cookie.setPath("/");
response.addCookie(cookie);
}
}
}
}