springboot经典项目

package com.example.demo1.service.impl; import com.example.demo1.dao.AreaDao; import com.example.demo1.entity.Area; import com.example.demo1.service.AreaService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.Date; import java.util.List; @Service public class AreaServiceImpl implements AreaService { @Autowired AreaDao areaDao; @Override public List<Area> getAreaList() { return areaDao.queryArea(); } @Override public Area getAreaByAreaId(int areaId) { return areaDao.queryAreaById(areaId); } @Override public boolean insert(Area area) { if (area.getAreaName() != null && !"".equals(area.getAreaName())) { area.setCreateTime(new Date()); area.setLastEditTime(new Date()); try { int count = areaDao.insertArea(area); if (count > 0) { return true; } else { throw new RuntimeException("插入信息异常"); } } catch (Exception e) { throw new RuntimeException("插入信息异常：" + e.getStackTrace()); } } else { throw new RuntimeException("区域信息不能为空"); } } @Override public boolean update(Area area) { if (area.getAreaId() != null && !"".equals(area.getAreaId())) { area.setLastEditTime(new Date()); try { int count = areaDao.updateArea(area); if (count > 0) { return true; } else { throw new RuntimeException("更新信息异常"); } } catch (Exception e) { throw new RuntimeException("更新信息异常：" + e.getStackTrace()); } } else { throw new RuntimeException("区域信息不能为空"); } } @Override public boolean delete(int areaId) { if (areaId > 0) { try { Area area = new Area(); area.setAreaId(areaId); int count = areaDao.deleteArea(area); if (count > 0) { return true; } else { throw new RuntimeException("删除信息异常"); } } catch (Exception e) { throw new RuntimeException("删除信息异常：" + e.getStackTrace()); } } else { throw new RuntimeException("区域信息不能为空"); } } }