1.<system.web>节点下添加
<system.web>
<httpRuntime maxQueryStringLength="2097151" maxUrlLength="2097151"/>
</system.web>
2.<system.webServer>下添加
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxQueryString="2097150" />
</requestFiltering>
</security>
</system.webServer>