如何在JSF中添加cookie？ [英] How to add cookie in JSF?

问题描述

当我添加如下的cookie：

When I add a cookie as below:

FacesContext.getCurrentInstance().getExternalContext().addResponseCookie("Test", "Test", null);

然后它运行良好，但cookie成为最大年龄 -1 。

Then it works well, but the cookie becomes a session cookie with max age of -1.

当我尝试如下：

Map<String, Object> properties = new HashMap<>();
properties.put("domain", "test");
properties.put("maxAge", 31536000);
properties.put("secure", false); 
properties.put("path","/");
FacesContext.getCurrentInstance().getExternalContext().addResponseCookie("Test", "Test", properties);

然后我在任何地方都看不到cookie。我不明白为什么。

Then I don't see the cookie anywhere. I don't understand why.

我使用Tomcat 7。

I'm using Tomcat 7.

推荐答案

尝试这样：

public class CookieHelper {

  public void setCookie(String name, String value, int expiry) {

    FacesContext facesContext = FacesContext.getCurrentInstance();

    HttpServletRequest request = (HttpServletRequest) facesContext.getExternalContext().getRequest();
    Cookie cookie = null;

    Cookie[] userCookies = request.getCookies();
    if (userCookies != null && userCookies.length > 0 ) {
        for (int i = 0; i < userCookies.length; i++) {
            if (userCookies[i].getName().equals(name)) {
                cookie = userCookies[i];
                break;
            }
        }
    }

    if (cookie != null) {
        cookie.setValue(value);
    } else {
        cookie = new Cookie(name, value);
        cookie.setPath(request.getContextPath());
    }

    cookie.setMaxAge(expiry);

    HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
    response.addCookie(cookie);
  }

  public Cookie getCookie(String name) {

    FacesContext facesContext = FacesContext.getCurrentInstance();

    HttpServletRequest request = (HttpServletRequest) facesContext.getExternalContext().getRequest();
    Cookie cookie = null;

    Cookie[] userCookies = request.getCookies();
    if (userCookies != null && userCookies.length > 0 ) {
        for (int i = 0; i < userCookies.length; i++) {
            if (userCookies[i].getName().equals(name)) {
                cookie = userCookies[i];
                return cookie;
            }
        }
    }
    return null;
  }
}

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