设置Java HttpServer响应的内容类型

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;

public class MyHttpServer {
    public static void main(String[] args) throws IOException {
        HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
        server.createContext("/", new MyHandler());
        server.setExecutor(null);
        server.start();
        System.out.println("Server started on port 8000");
    }

    static class MyHandler implements HttpHandler {
        @Override
        public void handle(HttpExchange exchange) throws IOException {
            String response = "<h1>Hello, World!</h1>";
            exchange.getResponseHeaders().add("Content-Type", "text/html");
            exchange.sendResponseHeaders(200, response.length());
            OutputStream outputStream = exchange.getResponseBody();
            outputStream.write(response.getBytes());
            outputStream.close();
        }
    }
}