无法将对象 'org.springframework.cloud.service.BaseServiceInfo@31f7615f' 转换为 class 'com.acme.oauth.SsoServiceInfo'

Question

我有一个正在尝试绑定到 SSO 服务的 grails 应用程序。当我执行 cf env myapp 时，我可以看到以下内容。

"p-identity": [
   {
    "credentials": {
     "auth_domain": "https://someurl",
     "client_id": "968c",
     "client_secret": "b44df"
    },
    "label": "p-identity",
    "name": "sso",
    "plan": "ssotest",
    "provider": null,
    "syslog_drain_url": null,
    "tags": [],
    "volume_mounts": []
   }
  ]

为了与服务绑定，我使用了以下 springcloud 库：

compile (group: 'org.springframework.cloud', name: 'spring-cloud-cloudfoundry-connector', version: '1.2.3.RELEASE' ) {
    excludes 'slf4j-api', 'slf4j-log4j12', 'slf4j'
} 

compile group: 'org.springframework.cloud', name: 'spring-cloud-spring-service-connector', version: '1.2.3.RELEASE'

然后我创建两个 classes：SsoServiceInfo 和 SsoServiceInfoCreator

SsoServiceInfo.java

package com.acme.cfservice;
import org.springframework.cloud.service.BaseServiceInfo;

public class SsoServiceInfo extends BaseServiceInfo {

    public static final String P_SSO_ID = "p-identity";
    private String clientId;
    private String clientSecret;
    private String authDomain;

    public SsoServiceInfo(String clientId, String clientSecret, String authDomain) {
        super(P_SSO_ID);
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.authDomain = authDomain;
    }

    public String getClientId() {
        return clientId;
    }

    public String getClientSecret() {
        return clientSecret;
    }

    public String getAuthDomain() {
        return authDomain;
    }
}

SsoServiceInfoCreator.java

package com.acme.cfservice;
import org.springframework.cloud.cloudfoundry.CloudFoundryServiceInfoCreator;
import org.springframework.cloud.cloudfoundry.Tags;

import java.util.Map;

public class SsoServiceInfoCreator extends CloudFoundryServiceInfoCreator<SsoServiceInfo> {

    public SsoServiceInfoCreator() {
        super(new Tags());
    }

    @Override
    public boolean accept(Map<String, Object> serviceData) {
        return serviceData.get("label").equals(SsoServiceInfo.P_SSO_ID);
    }

    @Override
    public SsoServiceInfo createServiceInfo(Map<String, Object> serviceData) {
        Map<String, Object> credentials = getCredentials(serviceData);
        String clientId = (String) credentials.get("client_id");
        String clientSecret = (String) credentials.get("client_secret");
        String authDomain = (String) credentials.get("auth_domain");
        return new SsoServiceInfo(clientId, clientSecret, authDomain);
    }
}

我在 web-app/META-INF/services 中创建了一个名为 org.springframework.cloud.cloudfoundry.CloudFoundryServiceInfoCreator 的文件，并将以下行放入其中

com.acme.cfservice.SsoServiceInfoCreator

问题

但是，当我部署我的应用程序时，我在以下代码行中遇到错误：

def ssoService = (SsoServiceInfo) new CloudFactory().cloud?.getServiceInfo("sso");

我得到的错误是：

OUT org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'org.springframework.cloud.service.BaseServiceInfo@6d2369a8' with class 'org.springframework.cloud.service.BaseServiceInfo' to class 'com.acme.oauth.SsoServiceInfo'

我应该在这里做什么不同的事情？我的 class SsoServiceInfo 明明扩展了 org.springframework.cloud.service.BaseServiceInfo，那为什么我得到 CastException?

Answer 1

您的 SsoServiceInfoCreator.accept 方法与您显示的负载不一致。具体来说，您的有效负载中没有 "label" 。因此 FallbackBaseServiceInfoCreator.java 开始创建 BaseServiceInfo。您可能希望使用服务负载的一些其他属性来实现 accept 方法。

无法将对象 'org.springframework.cloud.service.BaseServiceInfo@31f7615f' 转换为 class 'com.acme.oauth.SsoServiceInfo'

Cannot cast object 'org.springframework.cloud.service.BaseServiceInfo@31f7615f' to class 'com.acme.oauth.SsoServiceInfo'

grails

groovy

spring

cloud-foundry

spring-cloud