使用Scala语言开发时，自动生成get和set方法
不用写return进行返回， 因为它的最后一行就是返回值
先建立四个层(层层递进)
domain 表结构的建立
repository(DAO) 实现接口层
service 实现业务层
controller 实现控制层
domain层开发
MetaTable.scala
package com.imooc.imoocbootscala.domain
import javax.persistence.{Entity, GeneratedValue, Id, Table}
import scala.beans.BeanProperty
/**
* 使用Scala语言开发时，自动生成get和set方法
* 不用写return进行返回， 因为它的最后一行就是返回值
*/
@Entity
@Table
class MetaTable {
@Id
@GeneratedValue
@BeanProperty
var id:Integer = _
@BeanProperty
var name:String = _
@BeanProperty
var tableType:String = _
@BeanProperty
var dbId:Integer = _
}
repository层开发
MetaTableRepository.scala
package com.imooc.imoocbootscala.repository
import com.imooc.imoocbootscala.domain.MetaTable
import org.springframework.data.repository.CrudRepository
trait MetaTableRepository extends CrudRepository[MetaTable, Integer]{
}
serive层开发
MetaTableService.scala
package com.imooc.imoocbootscala.service
import com.imooc.imoocbootscala.domain.MetaTable
import com.imooc.imoocbootscala.repository.MetaTableRepository
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.stereotype.Service
import org.springframework.transaction.annotation.Transactional
/**
*
* 注意，导入的注解包和java的完全不一样
*/
@Service
class MetaTableService @Autowired()(metaTableRepository: MetaTableRepository){
@Transactional //事务
def save(metaTable:MetaTable)= {
metaTableRepository.save(metaTable)
}
def query() = {
metaTableRepository.findAll()
}
}
controller层开发
MetaTableController.scala
package com.imooc.imoocbootscala.controller
import com.imooc.imoocbootscala.domain.MetaTable
import com.imooc.imoocbootscala.service.MetaTableService
import com.imooc.imoocbootscala.utils.ResultVOUtil
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.web.bind.annotation._
@RestController
@RequestMapping(Array("/meta/table"))
class MetaTableController @Autowired()(metaTableService: MetaTableService){
@RequestMapping(value = Array("/"), method = Array(RequestMethod.POST))
@ResponseBody
def save(@ModelAttribute metaTable:MetaTable) = {
metaTableService.save(metaTable)
ResultVOUtil.success() // 此处就是Scala调用已有的Java代码
}
@RequestMapping(value = Array("/"), method = Array(RequestMethod.GET))
@RequestBody
def query() = {
ResultVOUtil.success(metaTableService.query())
}
}
属性值:
application.yml
server:
port: 7777
context-path: /scala-boot
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
username: root
password: root
url: jdbc:mysql://localhost:3306/bootscala?useSSL=false
jpa:
hibernate:
ddl-auto: update
database: mysql
功能测试:
运行代码,在控制台查看,是否运行成功
在IDEA控制台查看信息:

去终端中的mysql下查看信息:

用postman软件,进行测试:
save()方法的测试:

query()方法的测试:
