com.plumelog.core.util.GfJsonUtil Maven / Gradle / Ivy

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package com.plumelog.core.util;

import com.alibaba.fastjson.JSON;

import java.util.*;

/**
 * className：GfJsonUtil
 * description：fastjson工具类
 * time：2020-05-11.16:17
 *
 * @author Frank.chen
 * @version 1.0.0
 */
public abstract class GfJsonUtil {

    private GfJsonUtil() {
    }

    public static  T parseObject(String json, Class clazz) {
        if (json == null) {
            return null;
        }
        return JSON.parseObject(json, clazz);
    }


    public static  String toJSONString(T t) {
        if (t == null) {
            return null;
        }
        return JSON.toJSONString(t);
    }


    public static  List parseList(Iterable jsonList, Class clazz) {
        List retList = new ArrayList();
        for (String json : jsonList) {
            retList.add(parseObject(json, clazz));
        }
        return retList;
    }


    public static  List> parseArrayList(Iterable jsonList, Class clazz) {
        List> retList = new ArrayList>();
        for (String json : jsonList) {
            retList.add(parseArray(json, clazz));
        }
        return retList;
    }

    public static  List parseArray(String json, Class clazz) {
        if (json == null) {
            return Collections.emptyList();
        }
        return JSON.parseArray(json, clazz);
    }


    public static  Map parseMapByUid(List jsonList, List uidList, Class clazz, boolean isContainsNull) {
        if (jsonList.size() != uidList.size()) {
            return null;
        }
        Map uidMap = new HashMap(uidList.size());
        for (int i = 0; i < uidList.size(); i++) {
            T t = parseObject(jsonList.get(i), clazz);
            if (isContainsNull || t != null) {
                uidMap.put(uidList.get(i), t);
            }
        }
        return uidMap;
    }


    public static  Map> parseArrayMapByUid(List jsonList, List uidList, Class clazz, boolean isContainsNull) {
        if (jsonList.size() != uidList.size()) {
            return null;
        }
        Map> uidMap = new HashMap>(uidList.size());
        for (int i = 0; i < uidList.size(); i++) {
            List t = parseArray(jsonList.get(i), clazz);
            if (isContainsNull || t != null) {
                uidMap.put(uidList.get(i), t);
            }
        }
        return uidMap;
    }
}