mirror of
https://github.com/tiennm99/java-design-patterns.git
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Ilkka Seppälä
0ca162a55c
* remove spring dep move junit, logging, mockito under dep mgmt * upgrade anti-corruption-layer deps * async method invocation * balking, bloc * bridge to bytecode * caching * callback - cqrs * component - health check * hexagonal - metadata mapping * rest of the patterns * remove checkstyle, take spotless into use
95 lines
3.3 KiB
Java
95 lines
3.3 KiB
Java
/*
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* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
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*
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* The MIT License
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* Copyright © 2014-2022 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.dynamicproxy.tinyrestclient;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.type.CollectionType;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import lombok.extern.slf4j.Slf4j;
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/** Utility class to handle Json operations. */
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@Slf4j
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public class JsonUtil {
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private static ObjectMapper objectMapper = new ObjectMapper();
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private JsonUtil() {}
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/**
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* Convert an object to a Json string representation.
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*
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* @param object Object to convert.
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* @param <T> Object's class.
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* @return Json string.
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*/
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public static <T> String objectToJson(T object) {
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try {
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return objectMapper.writeValueAsString(object);
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} catch (JsonProcessingException e) {
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LOGGER.error("Cannot convert the object " + object + " to Json.", e);
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return null;
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}
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}
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/**
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* Convert a Json string to an object of a class.
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*
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* @param json Json string to convert.
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* @param clazz Object's class.
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* @param <T> Object's generic class.
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* @return Object.
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*/
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public static <T> T jsonToObject(String json, Class<T> clazz) {
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try {
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return objectMapper.readValue(json, clazz);
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} catch (IOException e) {
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LOGGER.error("Cannot convert the Json " + json + " to class " + clazz.getName() + ".", e);
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return null;
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}
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}
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/**
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* Convert a Json string to a List of objects of a class.
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*
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* @param json Json string to convert.
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* @param clazz Object's class.
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* @param <T> Object's generic class.
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* @return List of objects.
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*/
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public static <T> List<T> jsonToList(String json, Class<T> clazz) {
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try {
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CollectionType listType =
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objectMapper.getTypeFactory().constructCollectionType(ArrayList.class, clazz);
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return objectMapper.reader().forType(listType).readValue(json);
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} catch (JsonProcessingException e) {
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LOGGER.error("Cannot convert the Json " + json + " to List of " + clazz.getName() + ".", e);
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return List.of();
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}
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}
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}
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