spring cloud config client not loading configuration from config server

I am following this link:http://cloud.spring.io/spring-cloud-config/spring-cloud-config.html#_client_side_usage

I tested this again and again and not seeing Spring cloud client is loading configuration from cloud server, please help to see where is the error:

POM:

<dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies>

Application:

    @Configuration@EnableAutoConfiguration@RestControllerpublic class ConfigclientApplication {    @Value("${spring.cloud.config.uri}")    String url;    @Value("${production.host}")    String host;    @RequestMapping("/")    public String home() {        return "Host is  => "+ this.host ;    }    public static void main(String[] args) {        SpringApplication.run(ConfigclientApplication.class, args);    }}

bootstrap.properties:spring.cloud.config.uri=http://localhost:8888

1. The config server is good:http://localhost:8888/spirent/default

   {"name":"spirent","profiles":["default"],"label":"master","propertySources":[{"name":"classpath:/spirent.yml","source":{"production.host":"server1","production.port":9999,"production.value1":12345,"test.host":"server2.com","test.port":4444,"test.value":"hello123"}}]}

2. now http://localhost:8080/ can not be started at all.

   Error creating bean with name 'configclientApplication'It seemed the auto inject of @Value can not find the production.host environment value.

How can I read the configuration in client once loaded from config server?

Thanks for your help.