在JavaScript和C#中获得referer

1. JavaScript

/**
* 获取HTTP请求的Referer
* @ishost 布尔类型 Referer为空时是否返回Host（网站首页地址）
*/
function get_http_referer(ishost) {
if (ishost === undefined) { ishost = true; }
if (document.referrer) {
return document.referrer;
} else {
if (ishost) {
return window.location.protocol + "//" + window.location.host;
} else {
return "";
}
}
}

2. C#

/// <summary>
/// 获取HTTP请求的Referer
/// </summary>
/// <param name="ishost">Referer为空时是否返回Host（网站首页地址）</param>
/// <returns>string</returns>
public string GetReferer(bool ishost)
{
if ( Request.UrlReferrer != null)
{
return  Request.UrlReferrer.ToString();
}
else
{
if (ishost)
{
return Request.Url.Scheme + "://" + Request.Url.Authority;
}
else
{
return "";
}
}
}

3. C#中取得Request URL的各个部分

4. JavaScript window.location对象