94 lines
3.3 KiB
Java
94 lines
3.3 KiB
Java
package com.banesco.common.infraestructure.helpers;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.SerializationFeature;
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public class JsonHelper {
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private static final Logger logger = Logger.getLogger(JsonHelper.class.getName());
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public static final ObjectMapper MAPPER = new ObjectMapper();
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static {
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MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
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MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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}
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/**
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* Convert Object to jsonString
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*
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* @param object El objeto a convertir en JSON.
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* @return La cadena JSON resultante o null si ocurre un error.
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*/
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public static String getJsonFromObject(Object object) {
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if (object == null) {
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return "null";
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}
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try {
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return MAPPER.writeValueAsString(object);
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} catch (JsonProcessingException e) {
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logger.log(Level.SEVERE, "Error parsing objeto a JSON: {0}", e.getMessage());
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return null;
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}
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}
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/**
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* Convierte una cadena JSON en un objeto Java de la clase especificada.
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*
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* @param json La cadena JSON a convertir.
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* @param className La clase del objeto Java resultante.
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* @param <T> El tipo del objeto resultante.
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* @return El objeto Java resultante, o null si ocurre un error o la cadena
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* JSON está vacía.
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*/
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public static <T> T getObjectFromJson(String json, Class<T> className) {
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if (json == null || json.isEmpty()) {
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return null;
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}
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try {
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return MAPPER.readValue(json, className);
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} catch (JsonProcessingException | IllegalArgumentException e) {
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logger.log(Level.WARNING, "Error parsing JSON a objeto: {0}", e.getMessage());
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return null;
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}
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}
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public static <T> List<T> getListFromJson(String json, Class<T> className) {
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if (json == null || json.isEmpty()) {
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return new ArrayList<>();
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}
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try {
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return MAPPER.readValue(json,
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MAPPER.getTypeFactory().constructCollectionType(List.class, className)
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);
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} catch (JsonProcessingException | IllegalArgumentException e) {
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logger.log(Level.WARNING, "Error parsing JSON a List Object: {0}", e.getMessage());
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}
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return new ArrayList<>();
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}
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public static <T> List<T> getListFromInputStream(InputStream inputStream, Class<T> className) throws IOException {
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if (inputStream == null) {
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return new ArrayList<>();
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}
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try {
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return MAPPER.readValue(inputStream,
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MAPPER.getTypeFactory().constructCollectionType(List.class, className)
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);
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} catch (JsonProcessingException | IllegalArgumentException e) {
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logger.log(Level.WARNING, "Error parsing JSON a List Object: {0}", e.getMessage());
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}
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return new ArrayList<>();
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}
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}
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