json平铺

import net.sf.json.JSONObject;
import com.google.gson.*;
import org.apache.commons.lang.StringUtils;

import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;


public class EsHitsUtils {
    
    public static JSONObject jsonFormatter(String jsonStr) {

        Map map = new LinkedHashMap<>();
        parseJson2Map(map, jsonStr, null);
        JSONObject jsonObject = JSONObject.fromObject(map);
    
        return jsonObject;
    }

    public static void parseJson2Map(Map map, JsonObject jsonObject, String parentKey) {
        for (Map.Entry object : jsonObject.entrySet()) {
            String key = object.getKey();
            JsonElement value = object.getValue();
            String fullkey = (null == parentKey || parentKey.trim().equals("")) ? key : parentKey.trim() + StringUtils.capitalize(key);
            //判断对象的类型，如果是空类型则安装空类型处理
            if (value.isJsonNull()) {
                map.put(fullkey, null);
                continue;
                //如果是JsonObject对象则递归处理
            } else if (value.isJsonObject()) {
                parseJson2Map(map, value.getAsJsonObject(), fullkey);
                //如果是JsonArray数组则迭代，然后进行递归
            } else if (value.isJsonArray()) {
                JsonArray jsonArray = value.getAsJsonArray();
                Iterator iterator = jsonArray.iterator();
                int index = 1;
                while (iterator.hasNext()) {
                    JsonElement jsonElement1 = iterator.next();
                    try {
                        jsonElement1.getAsJsonObject();
                    } catch (IllegalStateException ie) {
                        map.put(fullkey + index++, jsonElement1.getAsString());
                        continue;
                    }
                    parseJson2Map(map, jsonElement1.getAsJsonObject(), fullkey + index++);
                }
                continue;
                // 如果是JsonPrimitive对象则获取当中的值,则还需要再次进行判断一下
            } else if (value.isJsonPrimitive()) {
                try {
                    JsonElement element = new JsonParser().parse(value.getAsString());
                    if (element.isJsonNull()) {
                        map.put(fullkey, value.getAsString());
                    } else if (element.isJsonObject()) {
                        parseJson2Map(map, element.getAsJsonObject(), fullkey);
                    } else if (element.isJsonPrimitive()) {
                        JsonPrimitive jsonPrimitive = element.getAsJsonPrimitive();

                        if (jsonPrimitive.isNumber()) {
                            map.put(fullkey, jsonPrimitive.getAsNumber());
                        } else {
                            map.put(fullkey, jsonPrimitive.getAsString());
                        }
                    } else if (element.isJsonArray()) {
                        JsonArray jsonArray = element.getAsJsonArray();
                        Iterator iterator = jsonArray.iterator();
                        while (iterator.hasNext()) {
                            parseJson2Map(map, iterator.next().getAsJsonObject(), fullkey);
                        }
                    }
                } catch (Exception e) {
                    map.put(fullkey, value.getAsString());
                }
            }
        }
    }

    
    public static void parseJson2Map(Map map, String json, String parentKey) {
        JsonElement jsonElement = new JsonParser().parse(json);
        if (jsonElement.isJsonObject()) {
            JsonObject jsonObject = jsonElement.getAsJsonObject();
            parseJson2Map(map, jsonObject, parentKey);
            //传入的还是一个json数组
        } else if (jsonElement.isJsonArray()) {
            JsonArray jsonArray = jsonElement.getAsJsonArray();
            Iterator iterator = jsonArray.iterator();
            while (iterator.hasNext()) {
                parseJson2Map(map, iterator.next().getAsJsonObject(), parentKey);
            }
        } else if (jsonElement.isJsonPrimitive()) {
            System.out.println("please check the json format!");
        } else if (jsonElement.isJsonNull()) {

        }
    }

    public static void main(String[] args) {
        String json = "[{"code":1,"msg":[{"a":"v","c":"d"},{"a":"v","c":"d"}],"msg1":["fasfsf","3113"]}]";
        System.out.println(jsonFormatter(json));
    }

}

        
            com.google.code.gson
            gson
            2.8.2
        
        
            net.sf.json-lib
            json-lib
            2.4
            jdk15