apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/ConsumerController.java/ConsumerController/getConsumerTokenByAppId
class ConsumerController:  @GetMapping(value = "/consumers/by-appId")
  public ConsumerToken getConsumerTokenByAppId(@RequestParam String appId) {
    return consumerService.getConsumerTokenByAppId(appId);
  }