package com.nemo.utils;
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
* @author Nemo
*/
public class CookieUtils {
/**
* 设置 Cookie(生成时间为1天)
* @param name 名称
* @param value 值
*/
public static void setCookie(HttpServletResponse response, String name, String value) {
setCookie(response, name, value, 60*60*24);
}
/**
* 设置 Cookie
* @param name 名称
* @param value 值
* @param maxAge 生存时间(单位秒)
* @param uri 路径
*/
public static void setCookie(HttpServletResponse response, String name, String value, int maxAge) {
Cookie cookie = new Cookie(name, null);
cookie.setPath("/");
cookie.setMaxAge(maxAge);
try {
cookie.setValue(URLEncoder.encode(value, "utf-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
response.addCookie(cookie);
}
/**
* 获得指定Cookie的值
* @param name 名称
* @return 值
*/
public static String getCookie(HttpServletRequest request, String name) {
return getCookie(request, null, name, false);
}
/**
* 获得指定Cookie的值,并删除。
* @param name 名称
* @return 值
*/
public static String getCookie(HttpServletRequest request, HttpServletResponse response, String name) {
return getCookie(request, response, name, true);
}
/**
* 获得指定Cookie的值
* @param request 请求对象
* @param response 响应对象
* @param name 名字
* @param isRemove 是否移除
* @return 值
*/
public static String getCookie(HttpServletRequest request, HttpServletResponse response, String name, boolean isRemove) {
String value = null;
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
if (cookie.getName().equals(name)) {
try {
value = URLDecoder.decode(cookie.getValue(), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (isRemove) {
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
}
return value;
}
}