在Travis CI，Spring Boot和PostgreSQL中運行EntityManagerException

我用Spring Boot，PostgreSQL，Maven和JUnit製作了一個簡單的Web應用程序。而在我的IDE中運行它（MVN明確的驗證），一切都運行完美，但在特拉維斯CI運行時，我得到這個異常：在Travis CI，Spring Boot和PostgreSQL中運行EntityManagerException

錯誤創建名稱爲豆「的entityManagerFactory」在類路徑資源定義[組織/ springframework的/ boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]：調用init方法失敗;嵌套異常是javax.persistence.PersistenceException：[PersistenceUnit：default]無法建立休眠SessionFactory

和其他很多。我的測試在IDE中運行良好。有人能告訴我爲什麼嗎？我的代碼是在這裏：

實體：

@Entity 
@Table(name = "contacts") 
public class Contact extends BaseEntity{ 

    @Column(name = "name", nullable = false) 
    private String name; 

    public Contact() { 
    } 
    public Contact(String name) { 
     this(null,name); 
    } 
    public Contact(Integer id, String name) { 
     super(id); 
     this.name = name; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    @Override 
    public String toString() { 
     return "Contact{" + 
       "id='" + id + '\'' + 
       "name='" + name + '\'' + 
       '}'; 
    } 
}

庫：

@Repository 
public class ContactRepositoryImpl implements ContactRepository{ 

    private static final Logger LOG = LoggerFactory.getLogger(ContactRepositoryImpl.class); 

    @Autowired 
    private ProxyContactRepository proxyContactRepository; 

    private Pattern regexPattern; 

    @Override 
    public List<Contact> getAllSorted(String nameFilter) { 
     List<Contact> listOfAllContacts = new CopyOnWriteArrayList<>(); 
     try { 
      regexPattern = Pattern.compile(nameFilter); 
      if (!nameFilter.isEmpty() || nameFilter.length() != 0) { 
       listOfAllContacts.addAll(getAll().stream().filter(contact -> notDoMatch(contact.getName())).collect(Collectors.toList())); 
      } else { 
       LOG.warn("Regex parameter " + "'" + nameFilter + "'" + " is empty"); 
       throw new NotFoundException("Regex parameter is empty"); 
      } 
      return listOfAllContacts; 
     } 
     catch (PatternSyntaxException exception){ 
      LOG.error("Regex parameter " + "'" + nameFilter + "'" + " is invalid"); 
      throw new NotFoundException("Regex parameter is invalid"); 
     } 
    } 

    @Override 
    public List<Contact> getAll() { 
     return proxyContactRepository.findAll(); 
    } 

    private boolean notDoMatch(String word){ 
     Matcher matcher = regexPattern.matcher(word); 
     return !matcher.matches(); 
    } 
}

控制器：

@RestController 
@RequestMapping("/contacts") 
public class ContactController extends AbstractContactController{ 

    @RequestMapping(method = RequestMethod.GET, params = "nameFilter") 
    public List<Contact> getSortedPage(@RequestParam("nameFilter") String nameFilter){ 
     return super.getAllSorted(nameFilter); 
    } 

    @RequestMapping(method = RequestMethod.GET) 
    public List<Contact> getAllPage(){ 
     return super.getAll(); 
    } 
}

travis.yml

language: java 
script: mvn clean verify 
jdk: oraclejdk8 

services: 
- postgresql 

before_script: 
- psql -c 'create database hello;' -U postgres

個

而且app.properties：

spring.datasource.driver-class-name=org.postgresql.Driver 
spring.datasource.url=jdbc:postgresql://localhost:5432/hello 
spring.datasource.username=postgres 
spring.datasource.password=password 

spring.jpa.hibernate.ddl-auto=validate 
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL81Dialect

我檢查到PostgreSQL數據庫的連接，它的工作原理（你可以看到它的圖片），但我沒有實體管理器的測試。有人可以告訴我這是什麼嗎？