webapi权限常见错误

webapi权限常见错误

错误一：

Response for preflight has invalid HTTP status code 405.

解决方案：

屏蔽配置文件中的如下代码

   <!--<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>-->

错误二：

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" />-->

解决方案：
跨域造成的，解决跨域即可：

 <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>

错误三：

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.

解决方案：

由于手误造成的，域名后面不能有任何字符或符合

正确：‘http://localhost:2062

错误：‘http://localhost:2062/