<!-- spring data jpa -->

     <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-data-jpa</artifactId>

     </dependency>

     <!-- 内存数据库hsqldb -->

     <dependency>

         <groupId>org.hsqldb</groupId>

         <artifactId>hsqldb</artifactId>

         <scope>runtime</scope>

     </dependency>

 spring:

   jpa:

     show-sql: false

     hibernate:

       ddl-auto: update

   datasource:

     url: jdbc:hsqldb:file:C:/rct/db/rct-db

     username: admin

     password: admin

     driverClassName: org.hsqldb.jdbcDriver

 import javax.persistence.Entity;

 import javax.persistence.GeneratedValue;

 import javax.persistence.Id;

 @Entity

 public class Update {

     @Id

     @GeneratedValue

     protected Long id;

     String version;//当前版本

     public String getVersion() {

         return version;

     }

     public void setVersion(String version) {

         this.version = version;

     }

 }

 import com.smart.rct.domain.Update;

 import org.springframework.data.repository.CrudRepository;

 public interface UpdateDao extends CrudRepository<Update, Long> {

 }

     @ApiOperation(value = "查询历史版本")

     @GetMapping("findAllVersion")

     public List<Update> findAllVersion() {

         return (List<Update>) updateDao.findAll();

     }