QueryString在Webconfig中的大小设置
  <system.web>
    <httpRuntime requestValidationMode="2.0" maxQueryStringLength="10240"/>
  </system.web>

  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxQueryString="10240"></requestLimits>
      </requestFiltering>
    </security>
  </system.webServer>