空值处理

xufenglei

2018-07-20 d8680e96da9c51f22fae430fc493f110cb374e5b

 src/main/java/com/moral/service/impl/AreaServiceImpl.java

@@ -3,9 +3,13 @@
import com.moral.entity.Area;
import com.moral.entity.City;
import com.moral.entity.Province;
import com.moral.entity.Town;
import com.moral.entity.Village;
import com.moral.mapper.AreaMapper;
import com.moral.mapper.CityMapper;
import com.moral.mapper.ProvinceMapper;
import com.moral.mapper.TownMapper;
import com.moral.mapper.VillageMapper;
import com.moral.service.AreaService;
import org.springframework.stereotype.Service;
import tk.mybatis.mapper.entity.Example;
@@ -22,6 +26,12 @@
    CityMapper cityMapper;
    @Resource
    AreaMapper areaMapper;

    @Resource
    private TownMapper townMapper;
    
    @Resource
    private VillageMapper villageMapper;

    @Override
    public List<Province> getProvinces() {
@@ -58,18 +68,35 @@
            String cityCode = codeStr.substring(0,4)+"00";
            City city = cityMapper.selectByPrimaryKey(Integer.valueOf(cityCode));
            Area area = areaMapper.selectByPrimaryKey(code);
            fullName = province.getProvinceName()+city.getCityName()+area.getAreaName();
            fullName = province.getProvinceName().replaceAll(" ", "")
                    +" "+city.getCityName().replaceAll(" ", "")
                    +" "+area.getAreaName().replaceAll(" ", "");
        }  else if(!codeStr.endsWith("0000")){
            // 此时为 地级市code
            String provinceCode = codeStr.substring(0,2)+"0000";
            Province province = provinceMapper.selectByPrimaryKey(Integer.valueOf(provinceCode));
            City city = cityMapper.selectByPrimaryKey(code);
            fullName = province.getProvinceName()+city.getCityName();
            fullName = province.getProvinceName().replaceAll(" ", "")
                    +" "+city.getCityName().replaceAll(" ", "");
        } else {
            // 此时为 省code
            Province province = provinceMapper.selectByPrimaryKey(code);
            fullName = province.getProvinceName();
            fullName = province.getProvinceName().replaceAll(" ", "");
        }
        return fullName;
    }

   @Override
   public List<Town> getTowns(Integer areaCode) {
        Example example = new Example(Town.class);
        example.or().andEqualTo("areaCode",areaCode);
        return townMapper.selectByExample(example);
   }

   @Override
   public List<Village> getVillages(Long townCode) {
        Example example = new Example(Village.class);
        example.createCriteria().andEqualTo("townCode",townCode);
        return villageMapper.selectByExample(example);
   }
}