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1 import java.io.UnsupportedEncodingException;
2 import java.net.URLDecoder;
3
4 import javax.servlet.http.Cookie;
5 import javax.servlet.http.HttpServletRequest;
6 import javax.servlet.http.HttpServletResponse;
7
8 /**
9 * 常用cookie处理方法工具类
10 */
11 public class CookieUtil {
12
13 /**
14 * 添加cookie
15 * @param response
16 * @param key cookie主键
17 * @param value cookie值
18 */
19 public static void addCookie(HttpServletResponse response, String key, String value){
20 Cookie cookie = new Cookie(key, value);
21 cookie.setPath("/");// 这个要设置
22 cookie.setMaxAge(60*60*24*30);//保留一个月 以秒为单位
23 response.addCookie(cookie);
24 }
25
26 /**
27 * 删除cookie
28 * @param request
29 * @param response
30 * @param key cookie主键
31 */
32 public static void deleteCookie(HttpServletRequest request, HttpServletResponse response, String key){
33 Cookie cookies[] = request.getCookies();
34 if (cookies != null) {
35 for (int i = 0; i < cookies.length; i++) {
36 if (cookies[i].getName().equals(key)) {
37 Cookie cookie = new Cookie(key,null);
38 cookie.setPath("/");//设置成跟写入cookies一样的
39 cookie.setMaxAge(0);
40 response.addCookie(cookie);
41 }
42 }
43 }
44 }
45
46 /**
47 * 取得cookie的值
48 * @param request
49 * @param key cookie主键
50 */
51 public static String getCookieValue(HttpServletRequest request, String key) throws UnsupportedEncodingException{
52 for(Cookie cookie : request.getCookies()){
53 if (cookie.getName().equals(key)) {
54 return URLDecoder.decode(cookie.getValue(), "UTF-8");
55 }
56 }
57 return null;
58 }
59 }
功能：cookie的添加、删除、获取值
1 import java.io.UnsupportedEncodingException;
2 import java.net.URLDecoder;
3
4 import javax.servlet.http.Cookie;
5 import javax.servlet.http.HttpServletRequest;
6 import javax.servlet.http.HttpServletResponse;
7
8 /**
9 * 常用cookie处理方法工具类
10 */
11 public class CookieUtil {
12
13 /**
14 * 添加cookie
15 * @param response
16 * @param key cookie主键
17 * @param value cookie值
18 */
19 public static void addCookie(HttpServletResponse response, String key, String value){
20 Cookie cookie = new Cookie(key, value);
21 cookie.setPath("/");// 这个要设置
22 cookie.setMaxAge(60*60*24*30);//保留一个月 以秒为单位
23 response.addCookie(cookie);
24 }
25
26 /**
27 * 删除cookie
28 * @param request
29 * @param response
30 * @param key cookie主键
31 */
32 public static void deleteCookie(HttpServletRequest request, HttpServletResponse response, String key){
33 Cookie cookies[] = request.getCookies();
34 if (cookies != null) {
35 for (int i = 0; i < cookies.length; i++) {
36 if (cookies[i].getName().equals(key)) {
37 Cookie cookie = new Cookie(key,null);
38 cookie.setPath("/");//设置成跟写入cookies一样的
39 cookie.setMaxAge(0);
40 response.addCookie(cookie);
41 }
42 }
43 }
44 }
45
46 /**
47 * 取得cookie的值
48 * @param request
49 * @param key cookie主键
50 */
51 public static String getCookieValue(HttpServletRequest request, String key) throws UnsupportedEncodingException{
52 for(Cookie cookie : request.getCookies()){
53 if (cookie.getName().equals(key)) {
54 return URLDecoder.decode(cookie.getValue(), "UTF-8");
55 }
56 }
57 return null;
58 }
59 }
标签： #写入cookie的代码
