我们在ASP.net中使用URL导向后, 我们在访问某个地址,或者打开某个系统页面的时候,就会报错误:

A potentially dangerous Request.Path value was detected from the client

at System.Web.HttpRequest.ValidateInputIfRequiredByConfig()

at System.Web.HttpApplication.ValidateRequestExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

这是因为上述地址中有*这个特殊字符存在。

如果你想不让ASP.net 替你拦截这些特殊字符,你需要设置如下Web.config的节:

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<system.web>
<httpRuntime requestPathInvalidCharacters="" />
</system.web>
</configuration>

注意其中的requestPathInvalidCharacters 它是一个以逗号分隔的无效字符列表。不设置它时,它默认的无效字符集(以,分割)是后面7个:<,>,*,%,&,:,/

即,不设置这个属性,默认就是如下设置:

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<system.web>
<httpRuntime requestPathInvalidCharacters="&lt;,&gt;,*,%,:,&amp;,/" />
</system.web>
</configuration>

如果你想这些字符全部不受限制,就应该设置 requestPathInvalidCharacters="" , 如果是部分字符受限制,部分字符不受限制,就需要在 requestPathInvalidCharacters 中设置需要受限制的字符,不受限制的不用设置。

转载:http://blog.csdn.net/ghj1976/archive/2010/06/29/5701277.aspx

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