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Merge pull request mouredev#6298 from martinbohorquez/java#20
#20 java
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‎Roadmap/20 - PETICIONES HTTP/java/martinbohorquez.java

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import com.google.gson.*;
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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.HttpURLConnection;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.util.*;
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import java.util.stream.Collectors;
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import java.util.stream.StreamSupport;
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/**
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* #20 PETICIONES HTTP
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* <dependency>
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* <groupId>com.google.code.gson</groupId>
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* <artifactId>gson</artifactId>
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* <version>2.10.1</version>
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* </dependency>
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*
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* @author martinbohorquez
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*/
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public class martinbohorquez {
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public static void main(String[] args) throws IOException, URISyntaxException {
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getHttpResponse("https://www.moure.dev/");
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/*
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* DIFICULTAD EXTRA
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*/
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System.out.print("Introduce un nombre o número de Pokémon a buscar: ");
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Scanner sc = new Scanner(System.in);
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String pokemon = sc.nextLine().toLowerCase();
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pokemonInfo(pokemon);
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}
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private static HttpURLConnection getResponse(String url) throws URISyntaxException, IOException {
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HttpURLConnection response = null;
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int responseCode;
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while (true) {
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URL obj = (new URI(url)).toURL();
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response = (HttpURLConnection) obj.openConnection();
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response.setRequestMethod("GET");
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response.setConnectTimeout(5000);
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response.setReadTimeout(5000);
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responseCode = response.getResponseCode();
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if (responseCode >= 300 && responseCode < 400)
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System.out.printf("Redirecting to: %s%n", url = response.getHeaderField("Location"));
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else break;
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}
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return response;
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}
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private static void getHttpResponse(String url) throws IOException, URISyntaxException {
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HttpURLConnection response = getResponse(url);
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int responseCode = response.getResponseCode();
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if (responseCode >= 200 && responseCode < 300)
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try (BufferedReader in = new BufferedReader(new InputStreamReader(response.getInputStream()))) {
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System.out.println(in.lines().collect(Collectors.joining()));
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}
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else System.out.printf("Error response código %d al realizar la petición", response.getResponseCode());
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}
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private static void pokemonInfo(String pokemon) throws URISyntaxException, IOException {
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HttpURLConnection response = getResponse("https://pokeapi.co/api/v2/pokemon/" + pokemon);
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int responseCode = response.getResponseCode();
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if (responseCode >= 200 && responseCode < 300) {
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try (BufferedReader in = new BufferedReader(new InputStreamReader(response.getInputStream()))) {
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String jsonString = in.lines().collect(Collectors.joining());
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Gson gson = new Gson();
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JsonObject jsonObject = gson.fromJson(jsonString, JsonObject.class);
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System.out.printf("Nombre: %s%n", jsonObject.get("name").getAsString());
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System.out.printf("ID: %s%n", jsonObject.get("id").getAsString());
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System.out.printf("Peso: %s%n", jsonObject.get("weight").getAsString());
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System.out.printf("Altura: %s%n", jsonObject.get("height").getAsString());
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List<String> types = StreamSupport.stream(jsonObject.getAsJsonArray("types").spliterator(), false)
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.map(JsonElement::getAsJsonObject)
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.map(typeObject -> typeObject.getAsJsonObject("type").get("name").getAsString())
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.toList();
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System.out.printf("Tipo(s): %s%n", types);
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evolutionChain(pokemon);
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List<String> juegos = StreamSupport.stream(jsonObject.getAsJsonArray("game_indices").spliterator(), false)
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.map(JsonElement::getAsJsonObject)
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.map(typeObject -> typeObject.getAsJsonObject("version").get("name").getAsString())
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.toList();
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System.out.printf("Juegos: %s%n", juegos);
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}
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} else System.out.printf("Error %d: Pokémon no encontrado!", response.getResponseCode());
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}
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private static void evolutionChain(String pokemon) throws URISyntaxException, IOException {
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HttpURLConnection response = getResponse("https://pokeapi.co/api/v2/pokemon-species/" + pokemon);
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int responseCode = response.getResponseCode();
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if (responseCode >= 200 && responseCode < 300) {
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try (BufferedReader in = new BufferedReader(new InputStreamReader(response.getInputStream()))) {
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String jsonString = in.lines().collect(Collectors.joining());
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Gson gson = new Gson();
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JsonObject jsonObject = gson.fromJson(jsonString, JsonObject.class);
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String url = jsonObject.get("evolution_chain").getAsJsonObject().get("url").getAsString();
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response = getResponse(url);
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responseCode = response.getResponseCode();
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if (responseCode >= 200 && responseCode < 300) {
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try (BufferedReader inS = new BufferedReader(new InputStreamReader(response.getInputStream()))) {
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jsonString = inS.lines().collect(Collectors.joining());
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gson = new Gson();
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jsonObject = gson.fromJson(jsonString, JsonObject.class);
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StringBuilder evolutionChain = new StringBuilder();
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JsonObject chainObject = jsonObject.getAsJsonObject("chain");
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System.out.println("Cadena(s) de evolución:");
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Map<Integer, String> evolutionMap = new LinkedHashMap<>();
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getEvolveTo(evolutionMap, evolutionChain, chainObject).values().forEach(System.out::println);
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}
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} else System.out.printf("Error %d: obteniendo evoluciones!", response.getResponseCode());
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}
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} else System.out.printf("Error %d: obteniendo evoluciones!", response.getResponseCode());
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}
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private static Map<Integer, String> getEvolveTo(Map<Integer, String> evolutionMap, StringBuilder evolutionChain, JsonObject chainObject) {
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Set<String> evolutionSet = new LinkedHashSet<>();
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JsonElement element = chainObject.getAsJsonObject("species").get("name");
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evolutionChain.append(element);
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JsonArray evolutions = chainObject.getAsJsonArray("evolves_to");
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for (int i = 0; i < evolutions.size(); i++) {
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if (i != 0) {
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int indexIni = evolutionChain.reverse().indexOf(" >- ");
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int length = evolutionChain.reverse().length();
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evolutionChain.delete(length - indexIni - 4, length);
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evolutionSet = new LinkedHashSet<>();
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}
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evolutionChain.append(" -> ");
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getEvolveTo(evolutionMap, evolutionChain, evolutions.get(i).getAsJsonObject());
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evolutionSet.add(evolutionChain.toString());
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if (!evolutionMap.containsValue(evolutionSet.toString())) evolutionMap.put(i, evolutionSet.toString());
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}
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return evolutionMap;
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}
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}

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