PROSAGA码农传奇-springboot-Spring Boot“不是实体”

<div class =“post-text”itemprop =“text”>
  
    所以我没有正确使用SpringBoot功能。以下是我遵循的步骤。请记住项目的架构：
  
   <pre>
 <code>
 - Parent maven project (my.package)
 |-Module Base (with IndexSetup class and [initialy] hibernate.cfg.xml in /resources. It also had in the beginning LocalDatabase class to access to the local db via hibernate)
 |-Module Indexing (that depends on Base)
 |-Module Server (that also depends on Base)
 |-Database file (myLocalDB)

</code>
 </pre>
  
    1）首先我删除了
     <code>
 hibernate.cfg.xml
 </code>
     从Base中删除它并将其放入Indexing模块的资源中。我这样做是因为SpringBoot有自己的配置机制。我还从Base中删除了LocalDatabase类（因为SpringBoot不需要它），并且在索引模块中也删除它（确实使用它）。
  
  
    2）关注[this]（
    <a href="https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-sql.html]" rel="nofollow noreferrer">
      https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-sql.html]
    </A>
     我补充道
     <code>
 spring-boot-starter-data-jpa
 </code>
     到服务器模块pom.xml。
  
  
    3）以下
    <a href="https://spring.io/guides/gs/accessing-data-jpa/" rel="nofollow noreferrer">
      本教程
    </A>
     我创建了一个JPA存储库
     <code>
 IndexSetupRepository
 </code>
     几乎只有一行代码：
  
   <pre>
 <code>
 public interface IndexSetupRepository extends CrudRepository<IndexSetup, Integer> {

</code>
 </pre>
  
    }
  
  
    4）在服务器中
     <code>
 application.properties
 </code>
     我添加了这些行：
  
   <pre>
 <code>
 # Embedded database configuration
# The embedded database file is one level above the Server folder (ie directly within the parent project)
# we use the auto server mode to be able to use the database simultaneously in the indexer and the server
spring.datasource.url=jdbc:h2:file:../myLocalDB;AUTO_SERVER=TRUE
spring.datasource.username=myName
# This parameter helped me discover that SpringBoot was not targetting the right table name.
spring.jpa.hibernate.ddl-auto=validate

</code>
 </pre>
  
    5）正如SpringBoot告诉我它找不到名为的表
     <code>
 index_setup
 </code>
     （看到
    <a href="https://stackoverflow.com/questions/29087626/entity-class-name-is-transformed-into-sql-table-name-with-underscores">
      骆驼案转换为_
    </A>
    ），我不得不将此行添加到application.properties：
  
   <pre>
 <code>
 spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

</code>
 </pre>
  
    6）现在，当我得到“实体未管理”时，我最终补充道
     <code>
 @EntityScan
 </code>
     对许多人建议我这样做的服务器主类的注释。
  
   <pre>
 <code>
 @EntityScan("my.package.Entities")

</code>
 </pre>
  
    
      请注意
       <code>
 @EntityScan
 </code>
       应该指向包含实体类的文件夹而不是实体类本身即ie
       <code>
 @EntityScan("my.package.Entities.IndexSetup")
 </code>
       不工作。
    
  
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