CORS 自定义标头不起作用 405 方法不允许



有一个用 C# 编写的 WCF Web 服务,有两个端点(SOAP + rest(。这两种服务都需要一个名为"token"的自定义标头字段。此自定义标头不能通过 JavaScript 代码发送。响应为">405 方法不允许"。这是跨平台源问题的错误。

我已经寻找了一些解决方案,但没有任何效果。我试图通过在本地主机环境中尝试一些代码狙击来解决问题。

这是我的本地主机网络服务的web.config:

<?xml version="1.0"?>
<configuration>
  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5.1" />
    <httpRuntime targetFramework="4.5.1"/>
    <customErrors mode="Off"/>
  </system.web>
  <system.runtime.caching>
    <memoryCache>
      <namedCaches>
        <add name="Default" physicalMemoryLimitPercentage="10" cacheMemoryLimitMegabytes="128" />
      </namedCaches>
    </memoryCache>
  </system.runtime.caching>
  <system.serviceModel>
    <services>
      <service name="MyProject.TokenTestService.Service" 
               behaviorConfiguration="ServiceAuthBehaviorHttp"
               >      
       <endpoint address=""
                  binding="basicHttpBinding"
                  bindingConfiguration="BasicHttpBindingLocalhost"
                  contract="MyProject.TokenTestService.IService"
                  />
        <endpoint address="rest"
                  behaviorConfiguration="AjaxEnabledBehavior"
                  binding="webHttpBinding"
                  bindingConfiguration="webBindingLocalhost"
                  contract="MyProject.TokenTestService.IService"
                  />
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="AjaxEnabledBehavior">
          <webHttp helpEnabled="true" />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
        <behavior name="ServiceAuthBehaviorHttp">
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <TokenValidationServiceExtension ApplicationId="2" CachingTimeInSeconds="3600"  />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <extensions>
      <behaviorExtensions>
        <add 
            name="TokenValidationServiceExtension" 
            type="MyProject.Authentication.Common.Extensions.TokenValidationServiceBehaviorExtension, MyProject.Authentication.Common" />
      </behaviorExtensions>
    </extensions>
    <bindings>
      <basicHttpBinding>
            <binding name="BasicHttpBinding_IAuthServiceSoap">
              <security mode="Transport" />
            </binding>
        <binding name="BasicHttpBinding_IAuthServiceSoapLocalhost" />
        <binding name="BasicHttpBindingLocalhost" />
      </basicHttpBinding>
      <webHttpBinding>
        <binding name="webBindingLocalhost" crossDomainScriptAccessEnabled="true" />
      </webHttpBinding>
    </bindings>
    <protocolMapping>
        <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>    
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <directoryBrowse enabled="true"/>
    <httpProtocol>
      <customHeaders>
        <add name="Origin" value="localhost" />
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, OPTIONS" />
        <add name="Access-Control-Allow-Headers" value="Origin, X-Requested-With, Content-Type, Accept, Token, ApplicationPriviliges" />
        <add name="Access-Control-Max-Age" value="1728000" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>

这是javascript代码:

<script>
$.ajax({
  url: "http://localhost:14305/Service.svc/rest/GetDataAdmin",
  type: "GET",
  crossDomain: true,
  dataType: 'json',
  data: null,
  headers: {
            'Content-Type':'application/json; charset=utf-8',
            'Token':'3C6E27D9-ACA7-47D9-BB8B-1C960813D79C'
  },
  success: function( result ) {
    $( "Result:" ).html( "<strong>" + result + "</strong>" );
  },
  error: function( err ) {
    $( "Result:" ).html( "<strong>" + err + "</strong>" );
  }
});
</script>

请求服务后,我在响应中获取自定义标头(令牌,应用程序权限(:

    Cache-Control: private
Allow: GET
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?RDpcVEZTXEdJVFxMaWZiaS5BcGkuQXV0aGVudGljYXRpb24uVGVzdFNlcnZpY2VcTGlmYmkuQXBpLlRva2VuVGVzdFNlcnZpY2VcU2VydmljZS5zdmNccmVzdFxHZXREYXRhQWRtaW4=?=
X-Powered-By: ASP.NET
Origin: localhost
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Token, ApplicationPriviliges
Access-Control-Max-Age: 1728000
Date: Mon, 05 Feb 2018 09:48:55 GMT
Content-Length: 1766

我发现的最佳解决方案是在Web服务器的配置中设置自定义标头。但我不为我工作。

有人知道吗?

谢谢!

您收到不允许的 405 方法,因为您的请求包含导致预检请求的标头令牌。预检请求使用 OPTIONS 方法,显然您的服务不允许使用此方法。

将自定义标头添加到 web.config 不足以使印前检查请求正常工作。服务器必须返回一个空的正文响应,其中包含一堆标头,告诉浏览器允许什么。

幸运的是,IIS

团队已经发布了 IIS CORS 模块,该模块允许您在 web.config 中以声明方式配置 CORS。例如:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <cors enabled="true" failUnlistedOrigins="true">
            <add origin="*" />
            <add origin="https://*.microsoft.com"
                 allowCredentials="true"
                 maxAge="120"> 
                <allowHeaders allowAllRequestedHeaders="true">
                    <add header="header1" />
                    <add header="header2" />
                </allowHeaders>
                <allowMethods>
                     <add method="DELETE" />
                </allowMethods>
                <exposeHeaders>
                    <add header="header1" />
                    <add header="header2" />
                </exposeHeaders>
            </add>
            <add origin="http://*" allowed="false" />
        </cors>
    </system.webServer>
</configuration>

在这里,您介绍了 IIS CORS 模块。

您可以在此处下载表格

这是文档。

不幸的是,它适用于完整的IIS,而不是用于IIS Express。但是,您可以将 Visual Studio 解决方案配置为使用本地 IIS。您必须安装它并以管理员身份执行Visual Studio,但它可以工作。

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