Spring Boot Cloud Data数据存储：使用Docker撰写的连接拒绝

Question

我正在尝试准备使用数据存储的基础架构进行本地测试。当我检查LocalHost：由我的浏览器托管数据存储器的8081时，然后返回ok。

我的docker-compoct

services:

  application:
    image: openjdk:17
    ports:
      - 9000:8080 # HTTP
    volumes:
      - ${BASE_PATH:-.}/build/libs/application.jar
    healthcheck:
      test: [ "CMD", "curl", "-f", "http://localhost:8080/health-check" ]
      interval: 10s
      timeout: 10s
      retries: 30
      start_period: 10s

  datastore:
    image: knarz/datastore-emulator
    ports:
      - 8081:8432
    environment:
      CONSISTENCY: 1 # If you omit this, the emulator will emulate eventual consistency.

my .yml文件

spring:
  cloud:
    gcp:
      project-id: test-project
      datastore:
        host: localhost:8081
        emulator:
          enabled: true
          port: 8081

我的方法获取数据：

    private DatastoreTemplate datastoreTemplate;

    public Entity getEntity(String id) {
        return datastoreTemplate.findById(id, Entity.class);
    }

异常非常通用：

Request processing failed; nested exception is com.google.cloud.datastore.DatastoreException: I/O error] with root cause","logger":"org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet]","thread_name":"http-nio-8080-exec-1","level":"ERROR","level_value":40000,"stack_trace":"java.net.ConnectException: Connection refused