webapi權限常見錯誤

webapi權限常見錯誤

錯誤一：

Response for preflight has invalid HTTP status code 405.

解決方案：

屏蔽配置文件中的如下代碼

   <!--<handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>-->

錯誤二：

No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:2062' is therefore not allowed access. The response had HTTP status code 500.
　<!--<add name="access-control-allow-headers" value="accept,origin,token,content-type,Authorization" />-->

解決方案：
跨域造成的，解決跨域即可：

 <httpProtocol>
      <customHeaders>
        <!-- Enable Cross Domain AJAX calls -->
        <add name="Access-Control-Allow-Origin" value="http://localhost:2062" />
        <add name="Access-Control-Allow-Methods" value="GET,POST,PUT,DELETE,OPTIONS"/>
        <add name="Access-Control-Allow-Headers" value="Content-Type,Authorization"/>
      </customHeaders>
    </httpProtocol>

錯誤三：

The 'Access-Control-Allow-Origin' header has a value 'http://localhost:2062/' that is not equal to the supplied origin. Origin 'http://localhost:2062' is therefore not allowed access.

解決方案：

由於手誤造成的，域名后面不能有任何字符或符合

正確：'http://localhost:2062

錯誤：'http://localhost:2062/

錯誤四：

404 Not Found

解決方案：

增加兩個modules任意一個都可以解決404，但如果驗證權限會出現405錯誤；

  <modules>
      <remove name="UrlRoutingModule-4.0"/>
      <add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition=""/>
    </modules>

    <modules runAllManagedModulesForAllRequests="true">
      <remove name="WebDAVModule" />
    </modules>

 

錯誤五：

Failed to load http://192.168.31.110:8014/api/Login/CheckLogin: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.31.110:8013' is therefore not allowed access.

解決方案：

 

 <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Content-Type,x-xsrf-token,X-Requested-With" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
    </httpProtocol>
錯誤六：
The requested resource does not support http method 'OPTIONS
解決方案：

錯誤七：

<!--IIS7/7.5上必須加這個配置,否則訪問報錯--> 23 <modules runAllManagedModulesForAllRequests="true"> 24 <remove name="WebDAVModule" /> 25 </modules> 26 <validation validateIntegratedModeConfiguration="false" /> 27 <handlers> 28 <remove name="WebDAV" /> 29 <remove name="WebAPI_64bit" /> 30 <remove name="WebAPI_32bit" /> 31 <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /> 32 <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /> 33 <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> 34 <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" resourceType="Unspecified" requireAccess="Script" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" /> 35 <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" resourceType="Unspecified" requireAccess="Script" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" /> 36 <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" resourceType="Unspecified" requireAccess="Script" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /> 37 <add name="WebAPI_64bit" path="*" verb="*" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="None" preCondition="classicMode,runtimeVersionv4.0,bitness64" /> 38 <add name="WebAPI_32bit" path="*" verb="*" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="None" preCondition="classicMode,runtimeVersionv4.0,bitness32" /> 39 </handlers>

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錯誤八：
      <remove name="OPTIONSVerbHandler" />
這個是罪魁禍首，移除即可

HTTP Error 403.14 - Forbidden

Web 服務器被配置為不列出此目錄的內容。

解決方案：

jQuery.support.cors = true;//設定支持跨域