Aula 1

.gitignore

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+.idea
+out
+alura-stickers.iml

src/JsonParser.java

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+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class JsonParser {
+
+    private static final Pattern REGEX_ITEMS = Pattern.compile(".*\\[(.+)\\].*");
+    private static final Pattern REGEX_ATRIBUTOS_JSON = Pattern.compile("\"(.+?)\":\"(.*?)\"");
+
+    public List<Map<String, String>> parse(String json) {
+
+        Matcher matcher = REGEX_ITEMS.matcher(json);
+        if (!matcher.find()) {
+
+            throw new IllegalArgumentException("Não encontrou items.");
+        }
+
+        String[] items = matcher.group(1).split("\\},\\{");
+
+        List<Map<String, String>> dados = new ArrayList<>();
+
+        for (String item : items) {
+
+            Map<String, String> atributosItem = new HashMap<>();
+
+            Matcher matcherAtributosJson = REGEX_ATRIBUTOS_JSON.matcher(item);
+            while (matcherAtributosJson.find()) {
+                String atributo = matcherAtributosJson.group(1);
+                String valor = matcherAtributosJson.group(2);
+                atributosItem.put(atributo, valor);
+            }
+
+            dados.add(atributosItem);
+        }
+
+        return dados;
+
+    }
+}

src/Main.java

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+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.net.http.HttpResponse.BodyHandlers;
+import java.util.List;
+import java.util.Map;
+
+public class Main {
+    public static void main(String[] args) throws IOException, InterruptedException {
+
+        // fazer a requisição HTTP com o metodo GET dos top 250 filmes de acordo com o site imdb.
+
+        String url = "https://mocki.io/v1/9a7c1ca9-29b4-4eb3-8306-1adb9d159060";
+        URI endereco = URI.create(url);
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(endereco).GET().build();
+        HttpResponse<String> response = httpClient.send(request, BodyHandlers.ofString());
+        String body = response.body();
+
+        // extrair os dados que interessam (titulo, poster, classificação)
+
+        JsonParser jsonParser = new JsonParser();
+        List<Map<String, String>> listaDeFilmes = jsonParser.parse(body);
+
+        // manipular e exibir os dados
+
+        for (Map<String, String> filme : listaDeFilmes) {
+            System.out.println(filme.get("title"));
+            System.out.println(filme.get("imDbRating"));
+            System.out.println(filme.get("image"));
+            System.out.println();
+        }
+
+
+    }
+}