validateRequest=false 可以禁用请求验证[通俗易懂]
validateRequest=false 可以禁用请求验证[通俗易懂]
大家好，又见面了，我是你们的朋友全栈君。
参看了MVP的利用WebClient和WebRequest类获得网页源代码于是想自己动手写点，当然是参考其的办法啦。
我这次下载了visual web developer 2005 express
按照上面的文章编写了代码，
我的btn函数如下
string urlPage = “”; urlPage = UrlText.Text; WebRequest request = WebRequest.Create(urlPage); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text =sr.ReadToEnd(); resStream.Close(); sr.Close();
但是一debug运行发现出现了一下错误
A potentially dangerous Request.Form value was detected from the client
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (ContentHtml=”<html> <head> <met…”).
仔细找了下解决方法和问题的原因原来是validaterequest的问题，以下是网络的参考连接，写的很详细，非常好呵呵
http://access911.net/index.asp?board=4&recordid=71FAB51E15DCE7F3
http://support.microsoft.com/default.aspx?scid=kb;en-us;821343&Product=aspnet
按照上面的说法解决方案又三种，
1.静止页面的validateRequest
<%@ Page validateRequest=”false” %>
2.设置web.config
<configuration> <system.web> <pages validateRequest=”false” /> </system.web> </configuration>
3.我个人认为是最好的，就是采用Server.HtmlEncode这个方法
我改动如下
string urlPage = “”; urlPage = UrlText.Text; WebRequest request = WebRequest.Create(urlPage); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text = Server.HtmlEncode(sr.ReadToEnd()); resStream.Close(); sr.Close();
ok运行一下，搞定。不错不错
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