1、根据名字获取cookie：
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;
}
}
2、将cookie封装到Map里面：
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;
}
3、保存Cookies：
public static HttpServletResponse setCookie(HttpServletResponse response, String name, String value,int time) {
// new一个Cookie对象,键值对为参数
Cookie cookie = new Cookie(name, value);
// tomcat下多应用共享
cookie.setPath("/");
// 如果cookie的值中含有中文时，需要对cookie进行编码，不然会产生乱码
try {
URLEncoder.encode(value, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
cookie.setMaxAge(time);
// 将Cookie添加到Response中,使之生效
response.addCookie(cookie); // addCookie后，如果已经存在相同名字的cookie，则最新的覆盖旧的cookie
return response;
}
