java解析json文件（省，市，区）

[{"code":"11","name":"北京市"},{"code":"12","name":"天津市"},{"code":"13","name":"河北省"},{"code":"14","name":"山西省"},{"code":"15","name":"内蒙古自治区"},
{"code":"21","name":"辽宁省"},{"code":"22","name":"吉林省"},{"code":"23","name":"黑龙江省"},{"code":"31","name":"上海市"},{"code":"32","name":"江苏省"},
{"code":"33","name":"浙江省"},{"code":"34","name":"安徽省"},{"code":"35","name":"福建省"},{"code":"36","name":"江西省"},{"code":"37","name":"山东省"},
{"code":"41","name":"河南省"},{"code":"42","name":"湖北省"},{"code":"43","name":"湖南省"},{"code":"44","name":"广东省"},{"code":"45","name":"广西壮族自治区"},
{"code":"46","name":"海南省"},{"code":"50","name":"重庆市"},{"code":"51","name":"四川省"},{"code":"52","name":"贵州省"},{"code":"53","name":"云南省"},
{"code":"54","name":"西藏自治区"},{"code":"61","name":"陕西省"},{"code":"62","name":"甘肃省"},{"code":"63","name":"青海省"},{"code":"64","name":"宁夏回族自治区"},
{"code":"65","name":"新疆维吾尔自治区"}]

有相同数据类型的province，city，area，street的json文件，通过解析，实现控制台输出。

建了一个公共类方法，代码如下：

package com.sdlanji.budd.common;


import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;

/**
 * 用于json文件数据的获取
 *
 *
 *
 */

public class jsonExport {

    public static JSONArray getJsonArray(String url) {
        //jsonArray[]格式
        JSONArray jsonArray = new JSONArray();
        StringBuilder result = new StringBuilder();
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    new FileInputStream(url), "UTF-8"));
            String s = null;
            while ((s = br.readLine()) != null) {
                result.append(System.lineSeparator() + s);
            }
            br.close();
            jsonArray = JSONArray.parseArray(result.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return jsonArray;
    }

    public static JSONObject getJsonObjectBy(String url){

        JSONObject jsonObject = new JSONObject();
        StringBuilder result = new StringBuilder();
        try{
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(
                    new FileInputStream(url),"UTF-8"));
            String s = null;
            while((s = bufferedReader.readLine()) != null){
                result.append(System.lineSeparator() + s);
            }
            bufferedReader.close();
            jsonObject = JSONObject.parseObject(result.toString());
        }catch (Exception e){
            e.printStackTrace();
        }
        return jsonObject;
    }
}

controller层代码：

public static void main(String[] args){

        //创建一个文件对象，指定要读取的文件
//        File file = new File("F:/json文件/provinces");
        //省数据
        JSONArray ja = new JSONArray();
        ja = jsonExport.getJsonArray("F:\json文件\provinces.json");
        for(int i=0;i<ja.size();i++) {
            //jsonObject{}格式
            JSONObject jsonObject = ja.getJSONObject(i);
            String proName = jsonObject.get("name").toString();
            Integer proId = jsonObject.getInteger("code");
            System.out.println(proId + "," + proName);
        }

        //市数据
        JSONArray jsonArray = new JSONArray();
        jsonArray = jsonExport.getJsonArray("F:\json文件\cities.json");
        for (int j=0;j<jsonArray.size();j++) {
            JSONObject jsonObject1 = jsonArray.getJSONObject(j);
            String cityName = jsonObject1.get("name").toString();
            Integer provinceCode = jsonObject1.getInteger("provinceCode");
            Integer cityId = jsonObject1.getInteger("code");
            System.out.println( cityName + "," + cityId);
        }

        //区数据
        JSONArray jsonArray1 = new JSONArray();
        jsonArray1 = jsonExport.getJsonArray("F:\json文件\areas.json");
        for (int y=0;y<jsonArray1.size();y++) {
            JSONObject jsonObject = jsonArray1.getJSONObject(y);
            String areaName = jsonObject.get("name").toString();
            Integer code = jsonObject.getInteger("code");
            System.out.println(areaName + "," + code);
        }

        //街道数据
        JSONArray jsonArrayStreet = new JSONArray();
        jsonArrayStreet = jsonExport.getJsonArray("F:\json文件\streets.json");
        Map<Object,Object> list1 = new HashMap<>();
        List<Object> listStreet = new ArrayList<>();
        for (int x=0;x<jsonArrayStreet.size();x++){
            JSONObject jsonObject1 = jsonArrayStreet.getJSONObject(x);
            String streetName = jsonObject1.get("name").toString();
            Integer codeId = jsonObject1.getInteger("code");
            Integer areaId = jsonObject1.getInteger("areaCode");
            System.out.println(streetName + "," + codeId);
        }
}
代码输出结果：
取部分结果

省：

11,北京市　　　　　　　　
12,天津市
13,河北省
14,山西省
15,内蒙古自治区
21,辽宁省
22,吉林省

市：

秦皇岛市,1303
邯郸市,1304
邢台市,1305
保定市,1306
张家口市,1307
承德市,1308
沧州市,1309
廊坊市,1310
衡水市,1311

区：

亮甲店镇,130229101
鸦鸿桥镇,130229102
窝洛沽镇,130229103
石臼窝镇,130229104
虹桥镇,130229105
散水头镇,130229106

街道：

人民路街道办事处,659004003
兵团一零一团,659004500
兵团一零二团,659004501
兵团一零三团,659004502
博古其镇,659006100
双丰镇,659006101

现在想把数据拼接起来，街道总共4万多条，不知道要怎么操作了。