hust-epi/whepi-web/src/main/java/com/bofeng/service/SysAreaService.java

package com.bofeng.service;

import com.bofeng.dao.SysAreaMapper;
import com.bofeng.entity.SysArea;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Transactional(readOnly = true)
public class SysAreaService {

    @Autowired
    private SysAreaMapper sysAreaMapper;

    public List<SysArea> selectProvince() {
        List<SysArea> lst = sysAreaMapper.selectProvince();
        if (lst != null && lst.size() > 0) {
            return lst;
        }
        return null;
    }

    public List<SysArea> selectCityByProvince(Long areaId) {
        List<SysArea> lst = sysAreaMapper.selectCityByProvince(areaId);
        if (lst != null && lst.size() > 0) {
            return lst;
        }
        return null;
    }

    public List<SysArea> selectAreaByCity(Long areaId) {
        List<SysArea> lst = sysAreaMapper.selectAreaByCity(areaId);
        if (lst != null && lst.size() > 0) {
            return lst;
        }
        return null;
    }

}