取出全球的主要国家城市(只有中国有省市区)

最新推荐文章于 2022-12-24 18:45:21 发布

转载最新推荐文章于 2022-12-24 18:45:21 发布 · 267 阅读

本文介绍了一种基于Java的方法来查询和组织国家、州/省及城市的数据。通过使用DAO层提供的方法，该方法实现了从数据库中获取国家信息，并进一步获取每个国家下对应的州/省及其所属的城市。

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@Override
public List<ShpLocationYSVo> queryArza() {
    List<ShpLocation> shpLocationList = shpLocationDao.queryContry();//国家
    List<ShpLocationYSVo> shpLocationYSVoList = new ArrayList<ShpLocationYSVo>();
    for (ShpLocation shpLocation : shpLocationList) {
        ShpLocationYSVo shpLocationYSVo = new ShpLocationYSVo();
        shpLocationYSVo.setId(shpLocation.getId());
        shpLocationYSVo.setPid(shpLocation.getPid());
        shpLocationYSVo.setNameEn(shpLocation.getNameEn());
        shpLocationYSVo.setNamePinyin(shpLocation.getNamePinyin());
        shpLocationYSVo.setsName(shpLocation.getsName());
        shpLocationYSVoList.add(shpLocationYSVo);
        /*********以上为国家*************/
        List<ShpLocationState> shpLocationStateList = new ArrayList<ShpLocationState>();
        ShpLocationState shpLocationState = null;
        ShpLocation shpLocationstate = new ShpLocation();
        if (shpLocation.getsName().equals("中国")) {
            shpLocationstate.setId(shpLocation.getId());
            List<ShpLocation> shpLocationStateLists = shpLocationDao.queryNodes(shpLocationstate);//根据id查省
            for (ShpLocation shpLocation1 : shpLocationStateLists) {
                shpLocationState = new ShpLocationState();
                shpLocationState.setId(shpLocation1.getId());
                shpLocationState.setPid(shpLocation1.getPid());
                shpLocationState.setsName(shpLocation1.getsName());
                shpLocationState.setNamePinyin(shpLocation1.getNamePinyin());
                shpLocationState.setNameEn(shpLocation1.getNameEn());
                shpLocationStateList.add(shpLocationState);
                /*****************以上为省*****************/
                ShpLocation shpLocationCity = new ShpLocation();
                shpLocationCity.setId(shpLocation1.getId());
                System.out.println(shpLocation1.getPid());
                List<ShpLocation> shpLocationCityLists = shpLocationDao.queryNodes(shpLocationCity);//根据id查市
                ShpLocationCity shpLocationCitys = null;
                List<ShpLocationCity> shpLocationCityList = new ArrayList<ShpLocationCity>();
                for (ShpLocation shpLocation2 : shpLocationCityLists) {
                    shpLocationCitys = new ShpLocationCity();
                    shpLocationCitys.setId(shpLocation2.getId());
                    shpLocationCitys.setPid(shpLocation2.getPid());
                    shpLocationCitys.setsName(shpLocation2.getsName());
                    shpLocationCitys.setNamePinyin(shpLocation2.getNamePinyin());
                    shpLocationCitys.setNameEn(shpLocation2.getNameEn());
                    shpLocationCityList.add(shpLocationCitys);
                }
                shpLocationState.setCityList(shpLocationCityList);
            }
            shpLocationYSVo.setStateList(shpLocationStateList);
        }
    }
    return shpLocationYSVoList;
}

<!--查询国家下的州/省 市-->
<select id="queryNodes" resultMap="BaseShpLocationResultMap" parameterType="com.yryz.qsource.modules.shplocation.entity.ShpLocation">
    SELECT
    <include refid="Base_Shp_Location_Column_List"/>
    FROM qsource_shp_location
    <where>
        1=1
        <if test="id != null">
          AND pid=#{id,jdbcType=INTEGER}
        </if>
        ORDER BY name_en ASC
    </where>
</select>