Java Json to Object deserialize(JsonReader reader, Class type)

Description

deserialize

License

Open Source License

Declaration

public static <T> T deserialize(JsonReader reader, Class<T> type) throws IOException 

Method Source Code

//package com.java2s;
/*/*from ww  w.j  ava 2s.  c  o  m*/
 * The MIT License (MIT)
 *
 * Copyright (c) dags <https://www.dags.me>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.stream.JsonReader;
import java.io.*;
import java.util.Optional;

public class Main {
    private static final Gson GSON = new GsonBuilder().setPrettyPrinting().create();

    public static <T> T deserialize(JsonReader reader, Class<T> type) throws IOException {
        T t = GSON.fromJson(reader, type);
        reader.close();
        return t;
    }

    public static <T> Optional<T> deserialize(File inFile, Class<T> type) {
        try {
            JsonReader reader = new JsonReader(new FileReader(inFile));
            return Optional.of(deserialize(reader, type));
        } catch (FileNotFoundException e) {
            return Optional.empty();
        } catch (IOException e) {
            return Optional.empty();
        }
    }
}

Related

1. decode(String httpMessageBody, Class objectClass)
2. decode(String input)
3. decode(String json, Class clazz)
4. decode(String json, Class clazz)
5. decodeCommandAsJson(final BsonInput bsonInput)
6. deserialize(String json, Class clazz)
7. deserialize(String json, Class targetType)
8. deserialize(String jsonData, Class typeOfT)
9. deserializeFromDataNode(JsonParser jp, DeserializationContext ctxt, String propertyName, TypeReference typeReference)