Cookie基本操作（JSF）

最新推荐文章于 2017-05-17 16:27:34 发布

zjshan

最新推荐文章于 2017-05-17 16:27:34 发布

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文章标签： JSF

本文介绍了在JavaServer Faces (JSF) 中如何实现Cookie的基本操作，包括添加、获取及删除Cookie。通过示例代码展示了如何设置Cookie的有效期、路径等属性，并提供了具体的实现细节。

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public static void addCookie(String cookieName, String cookieValue){
FacesContext facesContext = FacesContext.getCurrentInstance();
Cookie cookie = new Cookie(cookieName, cookieValue);
cookie.setMaxAge(31536000);
cookie.setPath("/");
((HttpServletResponse)facesContext.getExternalContext().getResponse()).addCookie(cookie);
}

public static String getCookieValue(String cookieName){
FacesContext facesContext = FacesContext.getCurrentInstance();
Cookie cookie[] = ((HttpServletRequest)facesContext.getExternalContext().getRequest()).getCookies();
if(cookie != null && cookie.length > 0){
String name = null;
for(int i = 0; i < cookie.length; i++){
name = cookie[i].getName();
if(name.equals(cookieName)){
return cookie[i].getValue();
}
}
}
return null;
}

public static void deleteCookie(String cookieName){
FacesContext facesContext = FacesContext.getCurrentInstance();
Cookie cookie[] = ((HttpServletRequest)facesContext.getExternalContext().getRequest()).getCookies();
if(cookie != null && cookie.length > 0){
String name = null;
for(int i = 0; i < cookie.length; i++){
name = cookie[i].getName();
if(name.equals(cookieName)){
cookie[i].setMaxAge(0);
cookie[i].setPath("/");
((HttpServletResponse)facesContext.getExternalContext().getResponse()).addCookie(cookie[i]);
}
}
}
}