gradle仓库地址：

// https://mvnrepository.com/artifact/com.google.code.gson/gson
compile group: 'com.google.code.gson', name: 'gson', version: '2.8.0'

package utils; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.internal.$Gson$Types; import com.google.gson.reflect.TypeToken; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Map; import java.util.logging.Level; import java.util.logging.Logger; /** * JSON对象映射解析工具类 * * @author audaque * */ public class GsonUtils { public static <T> T getObject(String jsonString, Class<T> cls) { T t = null; try { GsonBuilder builder = new GsonBuilder(); DateDeserializer deserializer = new DateDeserializer(); builder.registerTypeAdapter(Date.class, deserializer); Gson gson = builder.create(); t = gson.fromJson(jsonString, cls); } catch (Exception e) { Logger.getLogger(GsonUtils.class.getName()).log(Level.SEVERE, null, e); } return t; } public static <T> List<T> getObjects(String jsonString, Class<T> cls) { try { GsonBuilder builder = new GsonBuilder(); DateDeserializer deserializer = new DateDeserializer(); builder.registerTypeAdapter(Date.class, deserializer); Gson gson = builder.create(); Type tp = $Gson$Types.newParameterizedTypeWithOwner(null, (Type) List.class, cls); return gson.fromJson(jsonString, tp); } catch (Exception e) { Logger.getLogger(GsonUtils.class.getName()).log(Level.SEVERE, null, e); } return null; } public static List<String> getList(String jsonString) { List<String> list = new ArrayList<String>(); try { Gson gson = new Gson(); list = gson.fromJson(jsonString, new TypeToken<List<String>>() { }.getType()); } catch (Exception e) { Logger.getLogger(GsonUtils.class.getName()).log(Level.SEVERE, null, e); } return list; } public static List<Map<String, Object>> listKeyMap(String jsonString) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); try { Gson gson = new Gson(); list = gson.fromJson(jsonString, new TypeToken<List<Map<String, Object>>>() { }.getType()); } catch (Exception e) { Logger.getLogger(GsonUtils.class.getName()).log(Level.SEVERE, null, e); } return list; } public static String getJsonString(Object obj) { String json = null; try { // Gson gson = new Gson(); GsonBuilder builder = new GsonBuilder(); builder.disableHtmlEscaping(); DateSerializer serializer = new DateSerializer(); builder.registerTypeAdapter(Date.class, serializer); Gson gson = builder.create(); json = gson.toJson(obj); } catch (Exception e) { Logger.getLogger(GsonUtils.class.getName()).log(Level.SEVERE, null, e); } return json; } }