報表查看器 Web 控件 HTTP 處理程序尚未在應用程序的 web.config 文件中註冊

報表查看器 Web 控件 HTTP 處理程序尚未在應用程序的 web.config 文件中註冊。

報表查看器配置錯誤

報表查看器 Web 控件 HTTP 處理程序尚未在應用程序的 web.config 文件中註冊。請將 <add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /> 添加到 web.config 文件的 system.web/httpHandlers 節，或者將 <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /> 添加到 Internet Information Services 7 或更高版本的 system.webServer/handlers 節。

這個問題搞了好久。

解決方案：

1、首先看應用程序池，應該設置爲集成模式，我在這一步查詢了不少資料才解決這個問題。設置爲精典模式會一直出上面的錯。

2、如果應用程序池設置沒有問題，請下載ReportViewer。這是11.0版本的。這個程序還有個安裝前提，也在這個頁面下載。

https://www.microsoft.com/zh-cn/download/details.aspx?id=35747 

3、將六個DLL文件複製到BIN目錄下。

4、配置web.config

<configuration>
  <system.web>
    <compilation targetFramework="4.0" debug="true">
      <buildProviders>
        <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
      </buildProviders>
      <assemblies>
        <add assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/>
        <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="Microsoft.ReportViewer.WinForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/>
      </assemblies>
    </compilation>
    <httpHandlers>
      <add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" /> 
    </httpHandlers>
    <httpRuntime/>
    <pages theme="WeUI" controlRenderingCompatibilityVersion="4.0" clientIDMode="AutoID"/>
<sessionState mode="StateServer"     stateConnectionString="tcpip=127.0.0.1:42424"     cookieless="false" timeout="20" />
  </system.web>
  <system.webServer>
    <handlers>
      <add name="MyHandler2" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"/>
      <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
    </handlers>
    <validation validateIntegratedModeConfiguration="false"/>
  </system.webServer>
</configuration>

自己看裏面核心的配置代碼。