如何从 MVC 应用程序中的请求中读取值？

Question

我的Request.Params 值如下

ALL_HTTP=HTTP_CONNECTION%3aKeep-Alive%0d%0aHTTP_CONTENT_LENGTH%3a0%0d%0aHTTP_ACCEPT%3atext%2fhtml%2c+application%2fxhtml%2bxml%2c+image%2fjxr%2c+%2f% 0d%0aHTTP_ACCEPT_ENCODING%3agzip%2c+deflate%0d%0aHTTP_ACCEPT_LANGUAGE%3aen-US%0d%0aHTTP_HOST%3alocalhost%3a81%0d%0aHTTP_REFERER%3ahttps%3a%2f%2flogin.live.com%2fppsecure%2fpost.srf%3fresponse_type% 3dcode%26client_id%26redirect_uri%3dhttps%253a%252f%252flogin.microsoftonline.com%252fcommon%252ffederation%252foauth2%26state%26username%3dtestuser%2540hotmail.com%26max_age%3d0%2fROOT&APPL_PHYSICAL_PATH=D%3a%5cASPNETMembership ＆AUTH_USER =＆AUTH_PASSWORD =＆LOGON_USER =＆REMOTE_USER =＆CERT_COOKIE =＆CERT_FLAGS =＆CERT_ISSUER =＆CERT_KEYSIZE =＆CERT_SECRETKEYSIZE =＆CERT_SERIALNUMBER =＆CERT_SERVER_ISSUER =＆CERT_SERVER_SUBJECT =＆CERT_SUBJECT =＆CONTENT_LENGTH = 0＆CONTENT_TYPE =＆GATEWAY_INTERFACE = CGI％2f1.1＆HTTPS =关闭＆HTTPS_KEYSIZE =＆HTTPS_SECRETKEYSIZE =＆HTTPS_SERVER_ISSUER =＆HTTPS_SERVER_SUBJECT =＆INSTANCE_ID = 2＆INSTANCE_META_PATH = %2fLM%2fW3SVC%2f2&LOCAL_ADDR=%3a%3a1&PATH_INFO=%2fLogin.aspx&HTTP_DNT=1&HTTP_FRONT_END_HTTPS=on&HTTP_X_FORWARDED_FOR=20.689.292.800

我想从上面的字符串中读取username 值。

我在下面尝试过

Request.QueryString["username"].ToString();
Request["username"];
Request.Params.Get("username");

但都返回空值或空值。

请告诉我如何从上述请求中读取用户名。

Answer 1

试试这个

var requestParams = Request.Params.Get("ALL_HTTP");
var decoded = System.Web.HttpUtility.UrlDecode(requestParams);
var queryString = System.Web.HttpUtility.ParseQueryString(decoded);
var userName = queryString["username"];

---

Request.Params.Get("username") 不起作用，因为 username(encoded) 在 ALL_HTTPparameter 中。

您必须按照以下步骤获取用户名

1. 获取ALL_HTTP参数
2. URLDecode值
3. 解析成Collections.Specialized.NameValueCollection
4. 使用参数名称访问所需的值

Answer 2

你可以使用：

var username = Request.Parameters["username"];