Swing Java app中的嵌入式HTTP服务器 [英] Embedded HTTP server in Swing Java app

问题描述

我希望在我的java swing应用程序中嵌入一个非常轻的HTTP服务器，它只接受请求，执行一些操作并返回结果。

I wish to embed a very light HTTP server in my java swing app which just accepts requests, performs some actions and returns the results.

是否有一个非常轻的我可以在我的应用程序中使用的java类，它可以在指定的端口上侦听Http请求并让我处理请求吗？

Is there a very light java class that I can use in my app which listens on a specified port for Http requests and lets me handle requests?

请注意，我不是在寻找独立的http服务器，只是我可以在我的java应用程序中使用的一个小java类。

Note that I am not looking for a stand-alone http server, just a small java class which I can use in my java app.

推荐答案

令人惊讶的是，Sun JDK已经包含了一个简单的http服务器实现（仅从JDK 6开始）。参见 JavaDoc

Surprisingly, Sun JDK already contains a simple http server implementation (only starting from the JDK 6). See JavaDoc

用法：

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Executors;

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

public class HttpServerDemo {
  public static void main(String[] args) throws IOException {
    InetSocketAddress addr = new InetSocketAddress(8080);
    HttpServer server = HttpServer.create(addr, 0);

    server.createContext("/", new MyHandler());
    server.setExecutor(Executors.newCachedThreadPool());
    server.start();
    System.out.println("Server is listening on port 8080" );
  }
}

class MyHandler implements HttpHandler {
  public void handle(HttpExchange exchange) throws IOException {
    String requestMethod = exchange.getRequestMethod();
    if (requestMethod.equalsIgnoreCase("GET")) {
      Headers responseHeaders = exchange.getResponseHeaders();
      responseHeaders.set("Content-Type", "text/plain");
      exchange.sendResponseHeaders(200, 0);

      OutputStream responseBody = exchange.getResponseBody();
      Headers requestHeaders = exchange.getRequestHeaders();
      Set<String> keySet = requestHeaders.keySet();
      Iterator<String> iter = keySet.iterator();
      while (iter.hasNext()) {
        String key = iter.next();
        List values = requestHeaders.get(key);
        String s = key + " = " + values.toString() + "\n";
        responseBody.write(s.getBytes());
      }
      responseBody.close();
    }
  }
}

或者您可以使用 Jetty 。它非常轻巧，完全符合这个目的。

Or you can use Jetty for that purpose. It’s quite lightweight and perfectly fits this purpose.

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