Oauth 2.0 apereo CAS服务器中accessToken url的请求错误

我想将我的spring云网关应用程序与apereo CAS服务器（在8443端口上运行）集成，并将CAS服务器配置为Oauth2授权服务器。这里是流程

• 我请求网关

• 它与授权服务器（此处为CAS）交互

• 在交互之前，它需要在那里登录
• 我使用默认cas覆盖模板凭据成功登录。（casuser:Mellon）
• cas使用login/oauth2/code/login client？code=OC-3-TURQDNdC4jXulPgK7ipJSzfoBLi-iaSv&state=aitark42e0zx2itfkezzorm2rlehxsex6gtifzohlwy%3D url重定向到网关
• 网关上发生[invalid_grant]错误

我检查网关跟踪日志，在获取访问令牌步骤时出错

[ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter    : [33597172] Completed 302 FOUND, headers={masked}
[ctor-http-nio-2] o.s.h.s.r.ReactorHttpHandlerAdapter      : [33597172] Handling completed
[ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter    : [33597172] HTTP GET "/login/oauth2/code/login-client?code=OC-14-F99FROWxhVYzpfxkmQqB1BAfP-oOfIfI&state=Y9XC3NNkPUvb649Tx0dIDG4ZyIInioAD-xT2ll3bfII%3D", headers={masked}
[ctor-http-nio-2] o.s.w.r.f.client.ExchangeFunctions       : [dee9e83] HTTP POST http://localhost:8443/cas/oauth2.0/accessToken, headers={masked}
[ctor-http-nio-2] o.s.http.codec.FormHttpMessageWriter     : [dee9e83] Writing form fields [grant_type, code, redirect_uri] (content masked)
[ctor-http-nio-2] o.s.w.r.f.client.ExchangeFunctions       : [dee9e83] Response 400 BAD_REQUEST, headers={masked}
[ctor-http-nio-2] o.s.http.codec.json.Jackson2JsonDecoder  : [dee9e83] Decoded [{error=invalid_grant}]

显然，由于请求错误，它无法请求访问\u令牌。但是，我找不到什么是有效参数。而且，我不会手动请求，而是在幕后自动请求。我的错在哪里？谢谢你的帮助

以下是我的spring云网关配置：

spring:
  security:
    oauth2:
      client:
        registration:
          login-client:
            provider: uaa
            client-id: first-client
            client-secret: noonewilleverguess
            authorization-grant-type: authorization_code
            redirect-uri: "{baseUrl}/login/oauth2/code/{registrationId}"
        provider:
          uaa:
            authorization-uri: http://localhost:8443/cas/oauth2.0/authorize
            token-uri: http://localhost:8443/cas/oauth2.0/accessToken
            user-info-uri: http://localhost:8443/cas/oauth2.0/profile
            prefer-token-info: false
            client-authentication-scheme: form

cas oauth2注册服务

{
  "@class" : "org.apereo.cas.support.oauth.services.OAuthRegisteredService",
  "clientId": "first-client",
  "clientSecret": "noonewilleverguess",
  "serviceId": "http://localhost:8085/.*",
  "name": "OAuthService",
  "bypassApprovalPrompt": true,
  "id": 1003,
  "supportedGrantTypes": [ "java.util.HashSet", [ "authorization_code" ] ],
  "supportedResponseTypes": [ "java.util.HashSet", [ "code" ] ]
}

我使用的资源

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好的，问题其实很简单。spring cloud gateway自动填充3个字段（授权类型、代码、重定向uri），但cas apereo服务器的api包含5个字段（授权类型、代码、重定向uri以及客户端id、客户端机密）。为了解决这个问题，您可以定义您的api，它在cas中接受3个参数，其余的逻辑将是相同的。您唯一要做的就是覆盖访问令牌api字段行为