GServer.java - master - times/convert

GServer.java
94 строки4 KB
times
create: Main.java, GServer.java, TextColorSchema.java, TextGraphicsConverter.java, TextGraphicsConverterImpl.java, BadImageSizeException.java, DefaultTextColorSchema.java
28 апр 2026, 19:49
Верифицирован
28 апр 2026, 19:49c784040
package ru.netology.graphics.server;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpServer;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import ru.netology.graphics.image.TextGraphicsConverter;

public class GServer {
    public static final int PORT = 8888;
    private HttpServer server;
    private TextGraphicsConverter converter;

    public GServer(TextGraphicsConverter converter) throws Exception {
        if (converter == null) {
            throw new IllegalArgumentException("Серверу нужно передать в конструктор объект-конвертер, а было передано null.");
        } else {
            this.converter = converter;
            this.converter.setMaxHeight(300);
            this.converter.setMaxWidth(300);
            this.converter.setMaxRatio((double) 4.0F);
            this.server = HttpServer.create(new InetSocketAddress("localhost", 8888), 0);
            this.server.createContext("/", this::serveHtml);
            this.server.createContext("/convert", this::serveConvertion);
        }
    }

    public void start() {
        System.out.println("Запускаем сервер на порту 8888");
        System.out.println("Открой в браузере http://localhost:8888/");
        this.server.start();
    }

    protected void serveHtml(HttpExchange h) throws IOException {
        System.out.println("Serving html..");
        try {
            String htmlContent = Files.readString(Path.of("C:/Users/Jony/IdeaProjects/java-diplom/assets/index.html"));
            String jsContent = Files.readString(Path.of("C:/Users/Jony/IdeaProjects/java-diplom/assets/my.js"));
            
            htmlContent = htmlContent.replace("{{{JS}}}", jsContent);
            byte[] htmlBytes = htmlContent.getBytes(StandardCharsets.UTF_8);
            h.sendResponseHeaders(200, (long) htmlBytes.length);
            h.getResponseBody().write(htmlBytes);
            System.out.println("HTML отправлен успешно!");
        } catch (Exception e) {
            e.printStackTrace();
            String error = "Ошибка: " + e.getMessage();
            System.out.println(error);
            byte[] msgBytes = error.getBytes(StandardCharsets.UTF_8);
            h.sendResponseHeaders(500, msgBytes.length);
            h.getResponseBody().write(msgBytes);
        } finally {
            h.close();
        }
    }

    protected void serveConvertion(HttpExchange h) throws IOException {
        System.out.println("Convert request..");

        String url = new String(h.getRequestBody().readAllBytes(), StandardCharsets.UTF_8).trim();

        if (url == null || url.isEmpty()) {
            byte[] msgBytes = "Не указан URL".getBytes(StandardCharsets.UTF_8);
            h.sendResponseHeaders(400, msgBytes.length);
            h.getResponseBody().write(msgBytes);
            h.close();
            return;
        }

        try {
            System.out.println("Converting image: " + url);
            String converted = this.converter.convert(url);
            Files.writeString(Path.of("C:/Users/Jony/IdeaProjects/java-diplom/assets/img.txt"), converted);
            byte[] img = converted.getBytes(StandardCharsets.UTF_8);
            System.out.println("...converted!");
            h.sendResponseHeaders(200, img.length);
            h.getResponseBody().write(img);
        } catch (Exception e) {
            e.printStackTrace();
            String msg = e.getMessage();
            if (msg == null || msg.isEmpty()) {
                msg = "Произошла ошибка конвертации :'(";
            }
            byte[] msgBytes = msg.getBytes(StandardCharsets.UTF_8);
            h.sendResponseHeaders(500, msgBytes.length);
            h.getResponseBody().write(msgBytes);
        } finally {
            h.close();
        }
    }
}