我有一個(gè)簡(jiǎn)單的帶有 JPA、Web 和 PostgreSQL 的 Spring Boot 項(xiàng)目。我正在使用最新的 Spring Boot 版本2.1.3.RELEASE。添加簡(jiǎn)單的 JpaRepository 應(yīng)用程序后啟動(dòng)失敗并出現(xiàn)以下錯(cuò)誤：***************************APPLICATION FAILED TO START***************************Description:Field dataMappingRepository in com.my.example.service.impl.SimpleServiceImpl required a bean named 'entityManagerFactory' that could not be found.The injection point has the following annotations:    - @org.springframework.beans.factory.annotation.Autowired(required=true)Action:Consider defining a bean named 'entityManagerFactory' in your configuration.我有一個(gè)簡(jiǎn)單的@Service 類，例如：public class SimpleServiceImpl implements SimpleService {  @Autowired private SimpleJpaRepository repo;}和 JpaRepository：public interface SimpleJpaRepository extends JpaRepository<SimpleEntity, Long> {}這是我的application.yml：spring:   datasource:      url: jdbc:postgresql://localhost:5432/simple      username: user      password: pass      driver-class-name: org.postgresql.Driver   jpa:      show-sql: false      properties:         hibernate:            dialect: org.hibernate.dialect.PostgreSQLDialect      hibernate:         ddl-auto: validate如果我將spring-boot-starter-parent更改為2.0.8.RELEASE應(yīng)用程序?qū)⒄_啟動(dòng)。