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/