102 lines
2.7 KiB
Java
102 lines
2.7 KiB
Java
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package com.xscm.moduleutil.utils;
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//import com.blankj.utilcode.util.LogUtils;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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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.JsonSyntaxException;
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import com.google.gson.reflect.TypeToken;
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import com.xscm.moduleutil.http.BaseModelTypeAdapterFactory;
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import com.xscm.moduleutil.utils.logger.Logger;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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public class GsonUtils {
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private static Gson GSON ;
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// private static Gson GSON = new GsonBuilder().setPrettyPrinting().create();
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private static final JsonParser PARSER = new JsonParser();
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public static Gson getGSON() {
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if (GSON == null) {
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GSON = new GsonBuilder()
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.serializeNulls() // 序列化 null 值
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.registerTypeAdapterFactory(new BaseModelTypeAdapterFactory())
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.create();
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}
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return GSON;
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}
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/**
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* Object 转 json
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*
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* @param object object
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* @return object
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*/
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public static String GsonString(Object object) {
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return GSON.toJson(object);
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}
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public static <T> T GsonToBean(String gsonString, Class<T> cls) {
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return GSON.fromJson(gsonString, cls);
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}
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/**
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* 转成map的
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*
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* @param gsonString str
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* @return map
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*/
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public static Map<String, Object> GsonToMaps(String gsonString) {
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return GSON.fromJson(gsonString, new TypeToken<Map<String, Object>>() {
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}.getType());
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}
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/**
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* 将json 格式化输出
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*
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* @param str str
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* @return str
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*/
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public static String GsonToString(String str) {
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try {
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return GSON.toJson(PARSER.parse(str));
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} catch (JsonSyntaxException e) {
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e.printStackTrace();
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return str;
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}
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}
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/**
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* json字符串转成list
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* 解决泛型问题
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* 备注：
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* List<T> list=gson.fromJson(gsonString, new TypeToken<List<T>>() {}.getType());
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* 该方法会报泛型类型擦除问题
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*
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* @param gsonString
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* @param cls
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* @param <T>
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* @return
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*/
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public static <T> List<T> GsonToList(String gsonString, Class<T> cls) {
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List<T> list = new ArrayList<T>();
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try {
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if (GSON != null) {
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JsonArray array = new JsonParser().parse(gsonString).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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}
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} catch (Exception e) {
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Logger.e("非法json字符串", e);
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}
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return list;
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}
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}
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