73 lines
2.2 KiB
Java
73 lines
2.2 KiB
Java
package com.tsc.bitbucketbot.service;
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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 lombok.NonNull;
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import lombok.extern.slf4j.Slf4j;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.Optional;
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import java.util.zip.GZIPInputStream;
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/**
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* TODO: Добавить описание класса.
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*
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* @author upagge [30.01.2020]
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*/
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@Slf4j
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public class Utils {
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private static ObjectMapper objectMapper;
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static {
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objectMapper = new ObjectMapper();
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objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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}
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private Utils() {
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throw new IllegalStateException("Утилитарный класс");
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}
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@NonNull
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public static <T> Optional<T> urlToJson(String urlValue, String token, Class<T> classOfT) {
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StringBuilder sb = null;
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URLConnection urlCon;
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try {
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urlCon = new URL(urlValue).openConnection();
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if (token != null) {
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urlCon.setRequestProperty("Authorization", "Bearer " + token);
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}
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BufferedReader in;
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if (urlCon.getHeaderField("Content-Encoding") != null
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&& urlCon.getHeaderField("Content-Encoding").equals("gzip")) {
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in = new BufferedReader(new InputStreamReader(new GZIPInputStream(urlCon.getInputStream())));
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} else {
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in = new BufferedReader(new InputStreamReader(urlCon.getInputStream()));
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}
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String inputLine;
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sb = new StringBuilder();
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while ((inputLine = in.readLine()) != null) {
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sb.append(inputLine);
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}
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in.close();
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} catch (IOException e) {
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log.trace(e.getMessage());
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}
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if (sb != null) {
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try {
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return Optional.of(objectMapper.readValue(sb.toString(), classOfT));
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} catch (JsonProcessingException e) {
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log.error(e.getMessage());
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}
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}
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return Optional.empty();
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}
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}
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