SpringBoot框架操作數據庫的Scala示例

springboot配置文件配置信息、依賴導入啥的就跳過了
直接上代碼

domain

package com.ljq.domain

import javax.persistence.{Entity, GeneratedValue, Id, Table}

import scala.beans.BeanProperty


@Entity
@Table
class MetaTable {

  @Id
  @GeneratedValue
  @BeanProperty
  var id:Integer = _

  @BeanProperty
  var name:String = _

  @BeanProperty
  var tableType:String = _

  @BeanProperty
  var dbId:Integer = _
}

repository:

package com.ljq.repository

import com.ljq.domain.MetaTable
import org.springframework.data.repository.CrudRepository

trait MetaTableRepository extends CrudRepository[MetaTable, Integer]{

}

service:

package com.ljq.service

import com.ljq.domain.MetaTable
import com.ljq.repository.MetaTableRepository
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.stereotype.Service
import org.springframework.transaction.annotation.Transactional

@Service
class MetaTableService @Autowired()(metaTableRepository:MetaTableRepository){

  @Transactional
  def save(metaTable:MetaTable) = {
    metaTableRepository.save(metaTable)
  }

  def query() = {
    metaTableRepository.findAll()
  }

}

controller:

package com.ljq.controller

import com.ljq.domain.MetaTable
import com.ljq.service.MetaTableService
import com.ljq.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()  // 此處就是Scala調用已有的Java代碼
  }

  @RequestMapping(value = Array("/"), method = Array(RequestMethod.GET))
  @ResponseBody
  def query() = {
    ResultVOUtil.success(metaTableService.query())
  }

}

啓動類:

package com.ljq

import org.springframework.web.bind.annotation.{RequestMapping, RequestMethod, RestController}


@RestController
class ScalaHelloSpringBoot {

  @RequestMapping(value = Array("/HelloScala"),method = Array(RequestMethod.GET))
  def HelloScala() = {

    "Hello Scala SpringBoot......"
  }

}

調用的java類:

package com.ljq.utils;

import java.io.Serializable;

/**
 * http請求返回的對象
 */
public class ResultVO<T> implements Serializable {


    /**錯誤碼*/
    private Integer code;

    /**提示信息*/
    private String msg;

    /**具體內容*/
    private T data;

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}

package com.ljq.utils;

/**
 * 返回值工具類
 */
public class ResultVOUtil {

    public static ResultVO success(Object object) {
        ResultVO resultVO = new ResultVO();
        resultVO.setData(object);
        resultVO.setCode(0);
        resultVO.setMsg("成功");

        return resultVO;
    }


    public static ResultVO success() {
        return success(null);
    }


    public static ResultVO error(Integer code, String msg) {
        ResultVO resultVO = new ResultVO();
        resultVO.setCode(code);
        resultVO.setMsg("msg");
        return resultVO;
    }

}