修改引用到webapi的Dll檔案對應的專案的web.config
選擇生成讀寫方法webapi會生成四個讀寫的方法（CRUD），兩個獲取資料的、一個更新、一個刪除，預設情況下更新和刪除是不對外開外的，原因是安全問題，試想一下，可以刪除資料，小A使用者一次請求伺服器所有的資料被刪除了。但是可以通過簡單的配置接收更新刪除的請求，如下所示：
<system.webServer> <!--以下配置為了讓IIS7+支援Put/Delete方法--> <httpProtocol> <customHeaders> <add name="Access-Control-Allow-Origin" value="*" /> <add name="Access-Control-Allow-Methods" value="GET,PUT,POST,DELETE,OPTIONS" /> <add name="Access-Control-Allow-Headers" value="Content-Type" /> </customHeaders> </httpProtocol> <!--IIS7/7.5上必須加這個配置,否則訪問報錯--> <modules runAllManagedModulesForAllRequests="true"> <remove name="WebDAVModule" /> </modules> <validation validateIntegratedModeConfiguration="false" /> <handlers> <remove name="WebDAV" /> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /> <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /> <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> <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" /> <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" /> <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" /> </handlers>
<!--提高GET URL長度限制上限--> <security> <requestFiltering> <requestLimits maxUrl="409600" maxQueryString="204800" /> </requestFiltering> </security>
</system.webServer>