package com.github.hunter0x7c7.sync.utils;
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import com.google.gson.Gson;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonParser;
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import com.google.gson.reflect.TypeToken;
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import java.lang.reflect.Type;
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import java.util.ArrayList;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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/**
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* ================================================================
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* <p>
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* 版 权： Hunter(c)2018
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* <p>
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* 作 者： Hunter
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* <p>
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* 版 本： V1.0
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* <p>
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* 创建日期： 2018/3/26 16:50
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* <p>
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* 描 述：Json工具类
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* <p>
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* <p>
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* 修订历史：
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* <p>
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* ================================================================
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*/
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public class JsonUtil {
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private static Gson mGson = new Gson();
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/**
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* 将json字符串转化成实体对象
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*/
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public static <T> T fromJson(String json, Class<T> classOfT) {
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return mGson.fromJson(json, classOfT);
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}
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/**
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* 将json字符串转化成实体对象
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* 示例：new TypeToken<ResultEntity<Bean>>() { }.getType()
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*/
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public static <T> T fromJson(String json, Type typeOfT) {
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return mGson.fromJson(json, typeOfT);
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}
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/**
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* 将json字符串转化成实体对象
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*/
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public static <T> T fromJson(String json, TypeToken<T> typeToken) {
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return fromJson(json, typeToken.getType());
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}
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/**
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* 将对象准换为json字符串 或者 把list 转化成json
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*/
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public static <T> String toJson(T object) {
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return mGson.toJson(object);
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}
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/**
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* 把json 字符串转化成list
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*/
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public static <T> List<T> stringToList(String json, Class<T> cls) {
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Gson gson = new Gson();
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List<T> list = new ArrayList<>();
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JsonArray array = new JsonParser().parse(json).getAsJsonArray();
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for (final JsonElement elem : array) {
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list.add(gson.fromJson(elem, cls));
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}
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return list;
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}
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/**
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* Json字符串转Map
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*/
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public static Map<String, String> jsonToMap(String jsonStr) {
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jsonStr = jsonStr.replaceAll("[ ]*", "").replaceAll("[\r\n]*", "")
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.replace("{\"", "").replace("\"}", "")
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.replace("\",\"", "&").replace(",\"", "&").replace(",", "&")
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.replace("\":\"", "=").replace("\":", "=").replace(":", "=");
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Map<String, String> map = new LinkedHashMap<>();
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String[] sp = jsonStr.split("&");
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for (String ssp : sp) {
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String[] sspp = ssp.split("=");
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if (sspp.length >= 2) {
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if (sspp[1] != null && sspp[1].length() > 0) {
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map.put(sspp[0], sspp[1]);
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}
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}
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}
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return map;
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}
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public static String mapToJson2(Map<String, String> map) {
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Set<Map.Entry<String, String>> entrySet = map.entrySet();
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StringBuilder sb = new StringBuilder();
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sb.append("{");
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for (Map.Entry<String, String> entry : entrySet) {
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if (sb.length() > 1) {
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sb.append(",");
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}
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sb.append("\"")
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.append(entry.getKey())
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.append("\":\"")
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.append(entry.getValue())
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.append("\"");
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}
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sb.append("}");
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return sb.toString();
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}
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public static String mapToJson(Map<String, ?> map) {
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Set<? extends Map.Entry<String, ?>> entrySet = map.entrySet();
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StringBuilder sb = new StringBuilder();
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sb.append("{");
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Object value;
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for (Map.Entry<String, ?> entry : entrySet) {
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if (sb.length() > 1) {
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sb.append(",");
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}
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sb.append("\"").append(entry.getKey()).append("\":");
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value = entry.getValue();
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if (value instanceof Short || value instanceof Integer || value instanceof Long
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|| value instanceof CharSequence || value instanceof Float
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|| value instanceof Double || value instanceof Boolean) {
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sb.append("\"").append(value).append("\"");
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} else {
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sb.append(JsonUtil.toJson(value));
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}
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}
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sb.append("}");
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return sb.toString();
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}
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}
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