Question

我已经在我的JSP中初始化了这样的cooke，

String timeStamp = new SimpleDateFormat("dd:MM:yyyy_HH:mm:ss:SSS").format(Calendar.getInstance().getTime());
timeStamp = timeStamp + ":" + System.nanoTime();
String loc = "/u/poolla/workspace/FirstServlet/WebContent/WEB-INF/"+timeStamp;
Cookie thecookie = new Cookie("thecookie", loc);
thecookie.setMaxAge(60*60*24);
response.addCookie(thecookie);

因此，创建的所有cookie将具有相同的名称，但对于不同的用户访问时间具有不同的值。

在java servlet的结尾我想停用/杀死在java servlet开头传递的cookie，并说如果他们是并行使用系统的5个用户，我怎么知道哪个cookie要为哪个用户停用在my.java的最后？

例如，考虑

User 1 : cookie name `thecookie` value `AAA`
User 2 : cookie name `thecookie` value `BBB`
User 3 : cookie name `thecookie` value `CCC`
User 4 : cookie name `thecookie` value `DDD`
User 5 : cookie name `thecookie` value `EEE`

现在，在my.java servlet的末尾，我想要在my.java的开头分配值CCC而不干扰其他cookie值的cookie，如何执行此操作？

Answer 1

您使用错误的方法阅读Cookie ..

Cookie[] cookies = request.getCookies();

if (cookies != null) {
 for (Cookie cookie : cookies) {
   if (cookie.getName().equals("cookieName")) {
     //do something
     //value can be retrieved using #cookie.getValue()
    }
  }
}

使用它。无需检测特定用户的cookie，只需将其停用即可。

Answer 2

Cookie[] cookies = request.getCookies();
int i = 0;
for (Cookie cookie : cookies ) {

  Sytem.out.println(cookies[i].getName());
  Sytem.out.println(cookies[i].getValue());

  i++;
}

Answer 3

准备使用通用方法：

public static Cookie getCookie(HttpServletRequest request, String name) {
    Cookie[] cookies = request.getCookies();
    if (cookies != null) {
        for (Cookie cookie : cookies) {
            if (cookie.getName().equals(name)) {
                return cookie;
            }
        }
    }
    return null;
}

Answer 4

@InjectMocks

Answer 5

在Kotlin中，它会更短：

=countif("INDIRECT(A8)"&!H:H, "=✅")

Answer 6

protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    String username = "";
    String password = "";
    // Get an array of Cookies associated with this domain
    Cookie[] cookies = request.getCookies();
    if (cookies != null) {
        for (int i = 0; i < cookies.length; i++) {
            if (cookies[i].getName().equals("username")) {
                username = cookies[i].getValue();
            }
            if (cookies[i].getName().equals("password")) {
                password = cookies[i].getValue();
            }
        }
    }
    AccountDAO l = new AccountDAO();
    Account a = l.getAll(username, password);
    if (a != null) {
        request.getRequestDispatcher("Detail.jsp").forward(request, response);
       
    } else {
        request.getRequestDispatcher("login.jsp").forward(request, response);
    }
}

在java中获取cookie值

6 个答案: