服务器端操作Cookie

服务器端操作Cookie,主要注意会使用以下三个类:

HttpCookie,HttpResponse,HttpRequest

关于HttpCookie:

属性描述例子

Domain 获取或设置与此Cookie关联的域

Expires 获取或设置域的过期时间

HasKeys 获取一个值,通过该值指示Cookie是否具有子键

HttpOnly 获取或设定一个值,该值指定Cookie是否可通过客户端脚本访问

Item HttpCookie.Values属性的快捷方式

Name 获取或设置Cookie的名称

Path 获取或设置要与当前Cookie一起传输的虚拟路径

Secure 获取或设定一个值,该值指示是否使用安全套接字段(SSL)传输Cookie

Value 获取或设置Cookie的值

Values 获取单个Cookie对象所包含的键值对的集合cookie.Values["username"]

添加Cookie

public partial class cookie_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//创建Cookie

HttpCookie cookie = new HttpCookie("User");

//对中文进行编码

cookie["username"] = HttpUtility.UrlEncode("张三");

cookie["password"] = "zhangsan";

//注意:此处不可缺少,此处缺少,则无法成功添加cookie

cookie.Expires = DateTime.Now.AddDays(2);

//添加Cookie

Response.Cookies.Add(cookie);

}

}

读取Cookie

public partial class cookie_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//获取Cookie

HttpCookie cookie = Request.Cookies["User"];

//对中文进行解码

//输出:

// 张三

// zhangsan

Response.Write(HttpUtility.UrlDecode(cookie["username"])+"
"+cookie[" password"]);

}

}

2修改Cookie

public partial class cookie_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

Response.Cookies["User"]["username"] = HttpUtility.UrlEncode("李四");

//对中文进行解码

//输出:

// 李四

Response.Write(HttpUtility.UrlDecode(Request.Cookies["User"]["username"])) ;

}

}

3删除Cookie

public partial class cookie_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//设置Cookie过期,客户端即可自动删除该Cookie

Response.Cookies["User"].Expires = DateTime.Now.AddDays(-1);

}

}