启动类Springcloudk8sconfigdemoApplication.java，简单起见，将用于验证配置项是否生效的web接口也写在了这里面，即hello方法 ：
package com.bolingcavalry.springcloudk8sconfigdemo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; import java.text.SimpleDateFormat; import java.util.Date; @SpringBootApplication @RestController @EnableConfigurationProperties(DummyConfig.class) public class Springcloudk8sconfigdemoApplication { @Autowired private DummyConfig dummyConfig; @GetMapping("/hello") public String hello() { return dummyConfig.getMessage() + " [" + new SimpleDateFormat().format(new Date()) + "]"; } public static void main(String[] args) { SpringApplication.run(Springcloudk8sconfigdemoApplication.class, args); } }以上就是实战工程的所有代码了，仅仅只是引入了spring-cloud-kubernetes-config的依赖，以及在启动配置文件中指定了configmap的信息，即完成了获取配置文件的所有操作，至于代码中用到配置文件的地方，和使用SpringCloud Config并无差别。
解决权限问题我这里的是minikube，在部署了应用之后，默认的serviceaccount是没有权限访问K8S的API Server资源的，执行以下命令可以提升权限：
kubectl create clusterrolebinding permissive-binding \ --clusterrole=cluster-admin \ --user=admin \ --user=kubelet \ --group=system:serviceaccounts注意：以上办法只能用于开发和测试环境，不要用在生产环境，生产环境应参考Kubernetes的RBAC授权相关设置来处理，步骤如下：
创建role：
apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: namespace: default name: pod-reader rules: - apiGroups: [""] resources: ["pods","configmaps"] verbs: ["get", "watch", "list"]创建ServiceAccount：
apiVersion: v1 kind: ServiceAccount metadata: name: config-reader namespace: default绑定Role和ServiceAccount：
apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: pod-reader namespace: default roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: pod-reader subjects: - kind: ServiceAccount name: config-reader namespace: default在deployment中指定上面的ServiceAccount；
验证接下来我们在kubernetes环境创建configmap，再将springcloudk8sconfigdemo在kubernetes部署和启动，通过springcloudk8sconfigdemo提供的http接口验证应用是否已经从configmap中取得指定的配置；
在kubernetes环境新建名为springcloudk8sconfigdemo.yml的文件，内容如下：
kind: ConfigMap apiVersion: v1 metadata: name: springcloudk8sconfigdemo data: application.yml: |- greeting: message: Say Hello to the World farewell: message: Say Goodbye --- spring: profiles: development greeting: message: Say Hello to the Developers farewell: message: Say Goodbye to the Developers --- spring: profiles: production greeting: message: Say Hello to the Ops在springcloudk8sconfigdemo.yml文件所在目录执行以下命令，即可在kubernetes创建名为的configmap的资源：
kubectl apply -f springcloudk8sconfigdemo.yml在springcloudk8sconfigdemo项目的pom.xml文件所在目录，执行以下命令，即可编译构建部署全部完成：
mvn clean install fabric8:deploy -Dfabric8.generator.from=fabric8/java-jboss-openjdk8-jdk -Pkubernetes操作成功后的控制台信息如下：
[INFO] Installing /usr/local/work/k8s/springcloudk8sconfigdemo/target/classes/META-INF/fabric8/kubernetes.json to /root/.m2/repository/com/bolingcavalry/springcloudk8sconfigdemo/0.0.1-SNAPSHOT/springcloudk8sconfigdemo-0.0.1-SNAPSHOT-kubernetes.json [INFO] [INFO] <<< fabric8-maven-plugin:3.5.37:deploy (default-cli) < install @ springcloudk8sconfigdemo <<< [INFO] [INFO] [INFO] --- fabric8-maven-plugin:3.5.37:deploy (default-cli) @ springcloudk8sconfigdemo --- [INFO] F8: Using Kubernetes at https://192.168.121.133:8443/ in namespace default with manifest /usr/local/work/k8s/springcloudk8sconfigdemo/target/classes/META-INF/fabric8/kubernetes.yml [INFO] Using namespace: default [INFO] Updating a Service from kubernetes.yml [INFO] Updated Service: target/fabric8/applyJson/default/service-springcloudk8sconfigdemo.json [INFO] Using namespace: default [INFO] Updating Deployment from kubernetes.yml [INFO] Updated Deployment: target/fabric8/applyJson/default/deployment-springcloudk8sconfigdemo.json [INFO] F8: HINT: Use the command `kubectl get pods -w` to watch your pods start up [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 13.538 s [INFO] Finished at: 2019-07-14T17:06:25+08:00 [INFO] ------------------------------------------------------------------------如果您的环境也是minikube，可以执行以下命令查看服务地址：
minikube service springcloudk8sconfigdemo --url得到服务地址是：:31646