2018版中国行政区代码和名称JSON

1. 直接去*网站搞到代码列表

2. 去掉*，香港，澳门

3. 转成JSON

4. 可以用了

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.commons.lang3.StringUtils;

import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

public class AreaCodeConvert {

	@SuppressWarnings("unchecked")
	public static void main(String[] args) throws Exception {
		// 到*网站复制列表，保存到txt中，我找到的2016.3的
		// http://www.mca.gov.cn/article/sj/xzqh/2018/201804-12/201804-06041553.html
		// 直辖市和特别行政区比较讨厌，只有省的数据，没有市，或者没有区县，自己手动添加
		// 需要手动添加的有：北京，天津，上海，重庆，*，香港，澳门
		File f = new File("D:\\areaCode.txt");
		// 注意转码
		BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(f), "GBK"));
		String l = null;
		Map<String, Object> map = Maps.newLinkedHashMap();
		while ((l = r.readLine()) != null) {
			boolean isProvince = false, isCity = false, isRegion = false;
			// 左代码，右名称
			String[] split = StringUtils.split(l);
			String code = split[0];
			String name = split[1];
			// 代码规律：省级的都是xx0000,市级都是xxyy00
			isProvince = "0000".equals(StringUtils.substring(code, 2, 6));
			if (!isProvince) {
				isCity = "00".equals(StringUtils.substring(code, 4, 6));
			}
			if (!isCity) {
				isRegion = true;
			}
			if (isProvince) {
				// 存省级
				Map<String, Object> pMap = Maps.newLinkedHashMap();
				map.put(StringUtils.substring(code, 0, 2), pMap);
				pMap.put("code", code);
				pMap.put("name", name);
			} else if (isCity) {
				// 市级存到升级的children中
				Map<String, Object> pMap = (Map<String, Object>) map.get(StringUtils.substring(code, 0, 2));
				Map<String, Object> cMap = (Map<String, Object>) pMap.get("children");
				if (cMap == null) {
					cMap = Maps.newLinkedHashMap();
					pMap.put("children", cMap);
				}
				Map<String, Object> ccMap = Maps.newLinkedHashMap();
				cMap.put(StringUtils.substring(code, 0, 4), ccMap);
				ccMap.put("code", code);
				ccMap.put("pCode", StringUtils.substring(code, 0, 2) + "0000");
				ccMap.put("name", name);
			} else if (isRegion) {
				// 区级存到市级的children中
				System.out.println(code);
				Map<String, Object> pMap = (Map<String, Object>) map.get(StringUtils.substring(code, 0, 2));
				Map<String, Object> cMap = (Map<String, Object>) pMap.get("children");
				if (cMap == null) {
					String cCode = StringUtils.substring(code, 0, 4) + "00";
					cMap = Maps.newLinkedHashMap();
					Map<String, Object> ccMap = Maps.newLinkedHashMap();
					ccMap.put("code", cCode);
					ccMap.put("pCode", pMap.get("code"));
					ccMap.put("name", pMap.get("name"));
					cMap.put(cCode, ccMap);
					pMap.put("children", cMap);
				}
				Map<String, Object> ccMap = (Map<String, Object>) cMap.get(StringUtils.substring(code, 0, 4));
				// 坑爹的情况是有些是县级市，有些没有对应市的县，不过根据列表发现只是找到上一个就好了
				if (ccMap == null) {
					List<Entry<String, Object>> cList = new ArrayList<Entry<String, Object>>(cMap.entrySet());
					ccMap = (Map<String, Object>) cList.get(cList.size() - 1).getValue();
				}
				List<Map<String, Object>> rList = (List<Map<String, Object>>) ccMap.get("children");
				if (rList == null) {
					rList = Lists.newArrayList();
					ccMap.put("children", rList);
				}
				Map<String, Object> rMap = Maps.newLinkedHashMap();
				rMap.put("code", code);
				rMap.put("pCode", StringUtils.substring(code, 0, 4) + "00");
				rMap.put("name", name);
				rList.add(rMap);
			}
		}
		// Map不好看，转成List格式的
		List<Map<String, Object>> result = new ArrayList<Map<String, Object>>((Collection<? extends Map<String, Object>>) map.values());
		for (Map<String, Object> m : result) {
			Map<String, Object> c = (Map<String, Object>) m.get("children");
			m.put("children", new ArrayList<Map<String, Object>>((Collection<? extends Map<String, Object>>) c.values()));
		}
		ObjectMapper jsonMapper = new ObjectMapper();
		jsonMapper.setSerializationInclusion(Include.NON_DEFAULT);
		jsonMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
		System.out.println(jsonMapper.writeValueAsString(result));
		// 关闭，也懒得写try...catch了
		r.close();
	}
}