asp.net cookie操作类

时间：2022-06-25 04:04:06 编辑：袖梨来源：一聚教程网

代码如下

复制代码

public class BsCookie
{
//操作的cookie
private HttpCookie _theCookie;
//????ookie的名?
private string _cookieName;
private bool _httpOnly = true;
///

/// 是否只允?在服?掌鞫嗽L??,默?只允?在服?斩嗽L??
///

public bool HttpOnly
{
get { return _httpOnly; }
set { _httpOnly = value; }
}
private double _expireMinutes;
///

/// Cookies有效的存放?r?,以分?表示
///

public double ExpireMinutes
{
get { return _expireMinutes; }
set { _expireMinutes = value; }
}
public BsCookie(string name,double expireMinutes)
{
_cookieName = name;
_expireMinutes = expireMinutes;
}
///

/// ?取????ookie
///

///
///
private HttpCookie GetCookieReq()
{
HttpRequest request = HttpContext.Current.Request;
if (request != null)
{
HttpCookie cookie = request.Cookies[_cookieName];
if (cookie != null)
{
return cookie;
}
}
return null;
}
///

/// ?置????ookie
///

///
///
private HttpCookie GetCookieResponse()
{
HttpResponse response = HttpContext.Current.Response;
HttpCookie cookie = GetCookieReq();
if (cookie != null)
{
string value = cookie.Value;
cookie = response.Cookies[_cookieName];
cookie.Value = value;
}
else
{
cookie = new HttpCookie(_cookieName);
cookie.HttpOnly = _httpOnly;
response.Cookies.Add(cookie);
}
if (Math.Abs(_expireMinutes) > 1 && cookie != null)//在存在的情?r的下，延??期日期
{
cookie.Expires = DateTime.Now.AddMinutes(_expireMinutes);
}
return cookie;
}
///

/// ?H?置主?的
///

///
///
///
public void SetCookie(string value)
{
_theCookie = GetCookieResponse();
_theCookie.Value = HttpUtility.HtmlEncode(AllCommon.Encrypt(value));
if (Math.Abs(_expireMinutes) > 1)
{
_theCookie.Expires = DateTime.Now.AddMinutes(_expireMinutes);
}
}
///

/// ?置一?主?
///

///
///
///
public void SetCookie(Hashtable keys)
{
_theCookie = GetCookieResponse();
foreach (DictionaryEntry de in keys)
{
_theCookie.Values[de.Key.ToString()] = HttpUtility.HtmlEncode(AllCommon.Encrypt(de.Value.ToString()));
}
}
///

/// ?取?我坏?ookie主?值
///

///
/// 需要延?的cookie的默??r?
///
public string GetCookie()
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return string.Empty;
}
string thevalue = AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Value));
if (thevalue.Length > 0)
{
HttpCookie serverCookie = GetCookieResponse();
}
return thevalue;
}
///

/// ?取一?????ookie值
///

///
///
///
public Hashtable GetCookiesKeys()
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return null;
}
string[] keys = _theCookie.Values.AllKeys;
if (keys.Length > 0)
{
Hashtable keyHash = new Hashtable();
foreach (string key in keys)
{
keyHash.Add(key, AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Values[key])));
}
HttpCookie serverCookie = GetCookieResponse();
return keyHash;
}
return null;
}
///

/// 获取一组里面的单一个值
///

///
///
///
public string GetCookieKV(string keyname)
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return string.Empty;
}
string result=AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Values[keyname]));
if (result.Length > 0)
{
HttpCookie serverCookie = GetCookieResponse();

}
return result;
}
///

/// 清除????ookie
///

public void clearCookie()
{
HttpCookie serverCookie = GetCookieResponse();
if (serverCookie != null)
{
serverCookie.Expires = DateTime.Now.AddDays(-1.0d);
}
}
}

操作详解cookie 写入、读取、修改、删除

代码如下

复制代码

//写入
protected void Button2_Click(object sender, EventArgs e)
{
HttpCookie cookie=new HttpCookie("MyCook");//初使化并设置Cookie的名称
DateTime dt=DateTime.Now;
TimeSpan ts = new TimeSpan(0, 0, 1,0,0);//过期时间为1分钟
cookie.Expires = dt.Add(ts);//设置过期时间
cookie.Values.Add("userid", "userid_value");
cookie.Values.Add("userid2","userid2_value2");
Response.AppendCookie(cookie);
//输出该Cookie的所有内容
//Response.Write(cookie.Value); //输出为：userid=userid_value&userid2=userid2_value2
}

//读取
protected void Button1_Click(object sender, EventArgs e)
{

// HttpCookie cokie = new HttpCookie("MyCook");//初使化
if (Request.Cookies["MyCook"]!=null)
{
//Response.Write("Cookie中键值为userid的值:" + Request.Cookies["MyCook"]["userid"]);//整行
//Response.Write("Cookie中键值为userid2的值" + Request.Cookies["MyCook"]["userid2"]);
Response.Write(Request.Cookies["MyCook"].Value);//输出全部的值
}
}

//修改Cookie
protected void Button3_Click(object sender, EventArgs e)
{
//获取客户端的Cookie对象
HttpCookie cok = Request.Cookies["MyCook"];

if (cok != null)
{
//修改Cookie的两种方法
cok.Values["userid"] = "alter-value";
cok.Values.Set("userid", "alter-value");

//往Cookie里加入新的内容
cok.Values.Set("newid", "newValue");
Response.AppendCookie(cok);
}

}
//删除Cookie
protected void Button4_Click(object sender, EventArgs e)
{

HttpCookie cok = Request.Cookies["MyCook"];
if (cok != null)
{
if (!CheckBox1.Checked)
{
cok.Values.Remove("userid");//移除键值为userid的值
}
else
{
TimeSpan ts = new TimeSpan(-1, 0, 0, 0);
cok.Expires = DateTime.Now.Add(ts);//删除整个Cookie，只要把过期时间设置为现在
}
Response.AppendCookie(cok);
}
}

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