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steppat/SevenDaysOfCodeJavaDay4.java

Last active September 21, 2022 15:14
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SevenDaysOfCodeJavaDay4.java
import java.io.PrintWriter;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
class SevenDaysOfCodeJavaDay4 {
public static void main(String[] args) throws Exception {
String apiKey = "<sua_chave>";
URI apiIMDB = URI.create("https://imdb-api.com/en/API/Top250TVs/" + apiKey);
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder().uri(apiIMDB).build();
HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
String json = response.body();
List<Movie> movies = parse(json);
PrintWriter writer = new PrintWriter("content.html");
new HtmlGenerator(writer).generate(movies);
writer.close();
}
private static List<Movie> parse(String json) {
String[] moviesArray = parseJsonMovies(json);
List<String> titles = parseTitles(moviesArray);
List<String> urlImages = parseUrlImages(moviesArray);
List<String> ratings = parseRatings(moviesArray);
List<String> years = parseYears(moviesArray);
List<Movie> movies = new ArrayList<>(titles.size());
for (int i =0; i < titles.size(); i++) {
movies.add(new Movie(titles.get(i), urlImages.get(i) , ratings.get(i), years.get(i)));
}
return movies;
}
private static String[] parseJsonMovies(String json) {
Matcher matcher = Pattern.compile(".*\\[(.*)\\].*").matcher(json);
if (!matcher.matches()) {
throw new IllegalArgumentException("no match in " + json);
}
String[] moviesArray = matcher.group(1).split("\\},\\{");
moviesArray[0] = moviesArray[0].substring(1);
int last = moviesArray.length - 1;
String lastString = moviesArray[last];
moviesArray[last] = lastString.substring(0, lastString.length() - 1);
return moviesArray;
}
private static List<String> parseTitles(String[] moviesArray) {
return parseAttribute(moviesArray, 3);
}
private static List<String> parseUrlImages(String[] moviesArray) {
return parseAttribute(moviesArray, 5);
}
private static List<String> parseRatings(String[] moviesArray) {
return parseAttribute(moviesArray, 7);
}
private static List<String> parseYears(String[] moviesArray) {
return parseAttribute(moviesArray, 4);
}
private static List<String> parseAttribute(String[] jsonMovies, int pos) {
return Stream.of(jsonMovies)
.map(e -> e.split("\",\"")[pos])
.map(e -> e.split(":\"")[1])
.map(e -> e.replaceAll("\"", ""))
.collect(Collectors.toList());
}
}
record Movie(String title, String urlImage, String rating, String year) {
}
class HtmlGenerator {
private final PrintWriter writer;
public HtmlGenerator(PrintWriter writer) {
this.writer = writer;
}
public void generate(List<Movie> movies) {
writer.println(
"""
<html>
<head>
<meta charset=\"utf-8\">
<meta name=\"viewport\" content=\"width=device-width, initial-scale=1, shrink-to-fit=no\">
<link rel=\"stylesheet\" href=\"https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css\"
+ "integrity=\"sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm\" crossorigin=\"anonymous\">
</head>
<body>
""");
for (Movie movie : movies) {
String div =
"""
<div class=\"card text-white bg-dark mb-3\" style=\"max-width: 18rem;\">
<h4 class=\"card-header\">%s</h4>
<div class=\"card-body\">
<img class=\"card-img\" src=\"%s\" alt=\"%s\">
<p class=\"card-text mt-2\">Nota: %s - Ano: %s</p>
</div>
</div>
""";
writer.println(String.format(div, movie.title(), movie.urlImage(), movie.title(), movie.rating(), movie.year()));
}
writer.println(
"""
</body>
</html>
""");
}
}
@bjvargas
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bjvargas commented Apr 30, 2022 •
edited
Loading

Bom dia, Steppat. Sou dev júnior e como é a 1º vez mexendo com API e HTML, estou aprendendo aos poucos. Estou usando o VSCode para o desafio e segui com o Text Blocks, mas quando tento usá-lo, aparece o seguinte erro: "The Java feature 'Text Blocks' is only available with source level 15 and above".

Pesquisando sobre, entendi que o Text Blocks é uma "preview feature" que precisa ser ativada no VSCode, cuja configuração é feita em "User Settings.json". Só que por mais que tentasse mudar as configs, o problema aumentava de tamanho. Tem uma outra alternativa que eu possa usar, seja um outro editor em que o Text Blocks funcione? Estou usando a versão Java 17.

Boa tarde Alves, esse erro ocorre pois o seu VSCode não deve ter indexado o JDK 15+, sugiro que use o InteliJ para trabalhar com Java.

Mas uma alternativa é ao invés de blocos, usar apenas uma linha por vez, assim:

 writer.println("<html>");
        writer.println("<head>");
        writer.println("<link rel=\"stylesheet\" href=\"https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css\" integrity=\"sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T\" crossorigin=\"anonymous\">");
        writer.println("<script src=\"https://code.jquery.com/jquery-3.3.1.slim.min.js\" integrity=\"sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo\" crossorigin=\"anonymous\"></script>");
        writer.println("<script src=\"https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js\" integrity=\"sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1\" crossorigin=\"anonymous\"></script>");
        writer.println("<script src=\"https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js\" integrity=\"sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM\" crossorigin=\"anonymous\"></script>");
        writer.println("<meta charset=\"utf-8\">");
        writer.println("</head>");
        writer.println("<body>");

O mesmo para a String usada no laço:

String div = "<div class=\"card text-white bg-dark mb-3\" style=\"max-width: 18rem;\">"
                    + "<h4 class=\"card-header\">%s</h4>"
                    + "<div class=\"card-body\">"
                    + "<img class=\"card-img\" src=\"%s\" alt=\"%s\">"
                    + "<p class=\"card-text mt-2\">Nota: %s - Ano: %s</p>"
                    + " </div> </div>";

Espero ter ajudado!

@diazpedro081
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ta usando maven? tmb uso o VS Code p/ td
vai la na pom.xml e coloca <java.version>"8,11 etc"</java.version>
poe na v"15" que vai fluir

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