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Merge pull request mouredev#7085 from Josegs95/main
#20 y #21 - Java
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‎Roadmap/20 - PETICIONES HTTP/java/Josegs95.java

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import com.google.gson.JsonArray;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonParser;
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import java.io.IOException;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.net.http.HttpResponse.BodyHandlers;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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public class Josegs95 {
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public static void main(String[] args) {
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//Ejercicio
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HttpClient client = HttpClient.newHttpClient();
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HttpRequest request = HttpRequest.newBuilder()
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.uri(URI.create("https://www.google.es"))
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.GET()
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.build();
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try {
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HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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//Si no salta excepción, la petición fue exitosa.
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if (response.statusCode() != 200)
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System.out.println("Ha habido algún problema con la conexión. Cod: " + response.statusCode());
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else{
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System.out.println("La conexión ha sido un éxito.");
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System.out.println(response.body());
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}
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} catch (IOException e) {
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throw new RuntimeException(e);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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//Reto
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retoFinal();
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}
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public static void retoFinal(){
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//Voy a escribirlo todo en un método para hacerlo más sencillo y porque ya existen librerías especializadas
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//en trabajar con la pokeapi.
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Scanner sc = new Scanner(System.in);
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System.out.print("Introduzca el nombre o el número del Pokémon: ");
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String pokemon = sc.nextLine().toLowerCase();
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HttpClient client = HttpClient.newHttpClient();
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HttpRequest request = HttpRequest.newBuilder()
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.uri(URI.create("https://pokeapi.co/api/v2/pokemon/" + pokemon))
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.build();
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try {
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HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
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if(response.statusCode() != 200)
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System.out.println("Error " + response.statusCode() + ". Pokémon desconocido.");
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else{
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JsonObject pokemonData = JsonParser.parseString(response.body()).getAsJsonObject();
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//ID, nombre, peso, altura y tipos
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String id = pokemonData.get("id").getAsString();
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String name = pokemonData.get("name").getAsString();
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double weight = pokemonData.get("weight").getAsDouble() / 10.0;
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double height = pokemonData.get("height").getAsDouble() / 10.0;
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List<String> typeList = new ArrayList<>();
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for (JsonElement type : pokemonData.get("types").getAsJsonArray()) {
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JsonObject aux = type.getAsJsonObject();
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typeList.add(aux.get("type").getAsJsonObject().get("name").getAsString());
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}
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System.out.println("ID: " + id);
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System.out.println("Nombre: " + name);
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System.out.println("Peso: " + weight + " kg.");
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System.out.println("Altura: " + height + " m.");
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System.out.print("Tipos: ");
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for (String type : typeList)
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System.out.print(type + " ");
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System.out.println();
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//Evoluciones
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request = HttpRequest.newBuilder(URI.create("https://pokeapi.co/api/v2/pokemon-species/" + id))
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.build();
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response = client.send(request, BodyHandlers.ofString());
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if (response.statusCode() == 200){
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JsonObject specieData = JsonParser.parseString(response.body()).getAsJsonObject();
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String evoChainURL = specieData.get("evolution_chain").getAsJsonObject().get("url").getAsString();
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request = HttpRequest.newBuilder(URI.create(evoChainURL))
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.build();
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response = client.send(request, BodyHandlers.ofString());
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if (response.statusCode() == 200){
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JsonObject evolutionData = JsonParser.parseString(response.body()).getAsJsonObject();
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JsonElement auxElement = evolutionData.get("chain");
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List<String> evolutionList = new ArrayList<>();
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String basePokemonName = auxElement.getAsJsonObject()
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.get("species").getAsJsonObject()
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.get("name").getAsString();
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evolutionList.add(basePokemonName);
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for(JsonElement evolution : auxElement.getAsJsonObject().get("evolves_to").getAsJsonArray()){
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String aux = evolution.getAsJsonObject().get("species").getAsJsonObject().get("name").getAsString();
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evolutionList.add(aux);
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for (JsonElement evolution2 : evolution.getAsJsonObject().get("evolves_to").getAsJsonArray()){
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aux = evolution2.getAsJsonObject().get("species").getAsJsonObject().get("name").getAsString();
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evolutionList.add(aux);
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}
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}
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System.out.println("Línea evolutiva: " + evolutionList);
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//Juegos
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List<String> gameList = new ArrayList<>();
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for (JsonElement game : pokemonData.get("game_indices").getAsJsonArray())
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gameList.add(game.getAsJsonObject()
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.get("version").getAsJsonObject()
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.get("name").getAsString());
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System.out.print("Juegos: ");
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for (String gameName : gameList)
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System.out.print("[Pokémon " + gameName + "] ");
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System.out.println();
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}
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}
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}
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} catch (IOException e) {
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throw new RuntimeException(e);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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}

‎Roadmap/21 - CALLBACKS/java/Josegs95.java

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import java.util.Random;
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public class Josegs95 {
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public static void main(String[] args) {
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//Ejercicio
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int n1 = 25;
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int n2 = 67;
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int result = sum(n1, n2, new Farewell() {
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@Override
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public void goodbye() {
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System.out.println("Los números han sido sumados. Hasta otra!");
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}
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});
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System.out.println(n1 + " + " + n2 + " = " + result);
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//Reto
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retoFinal();
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}
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public static void retoFinal(){
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ClientMessages clientMessages = new ClientMessages() {
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@Override
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public void confirmed(String orderName) {
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System.out.println("Tu pedido '" + orderName + "' está confirmado.");
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}
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@Override
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public void ready(String orderName) {
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System.out.println("Tu pedido '" + orderName + "' está listo para enviar.");
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}
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@Override
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public void delivered(String orderName) {
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System.out.println("Tu pedido '" + orderName + "' ha sido enviado.");
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}
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};
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order("Hamburguesa doble", clientMessages);
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order("Ensalada de pasta", clientMessages);
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}
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public static int sum(int n1, int n2, Farewell farewell){
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int result = n1 + n2;
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farewell.goodbye();
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return result;
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}
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public static void order(String name, ClientMessages clientMessages){
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Random rnd = new Random();
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try{
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clientMessages.confirmed(name);
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Thread.sleep(rnd.nextInt(1, 11) * 1000);
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clientMessages.ready(name);
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Thread.sleep(rnd.nextInt(1, 11) * 1000);
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clientMessages.delivered(name);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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public interface Farewell{
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void goodbye();
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}
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public interface ClientMessages{
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void confirmed(String orderName);
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void ready(String orderName);
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void delivered(String orderName);
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}
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}

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