java - 使用 HttpCore 实现自定义 HTTP 方法

Question

我是 Java 新手，希望获得 Apache HttpCore 库的一些指导。

我编写了一个简单的服务器，并且想要实现一些自定义 HTTP 方法。我已经浏览了几次文档，但一直无法弄清楚。

看起来 501 Not Implemented 是在 HttpService.doService() 中引发的，但覆盖该方法不起作用。我的请求处理程序没有被调用。

任何帮助将不胜感激。

谢谢。

这是我所得到的要点:

    ServerSocket serverSocket;
    HttpParams params; 
    HttpService httpService;
    serverSocket = new ServerSocket(8000);

    params = new BasicHttpParams();
    params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 5000);
    params.setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024);
    params.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false);
    params.setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true);
    params.setParameter(CoreProtocolPNames.ORIGIN_SERVER, "?");

    BasicHttpProcessor httpproc = new BasicHttpProcessor();
    httpproc.addInterceptor(new ResponseDate());
    httpproc.addInterceptor(new ResponseServer());
    httpproc.addInterceptor(new ResponseContent());
    httpproc.addInterceptor(new ResponseConnControl());

    HttpRequestHandlerRegistry registry = new HttpRequestHandlerRegistry();
    registry.register("*", new HttpRequestHandler() {
        public void handle(HttpRequest request, HttpResponse response,
                HttpContext context) throws HttpException, IOException {
            System.out.println(request.getRequestLine().toString());

        }
    });

    httpService = new HttpService(httpproc, new DefaultConnectionReuseStrategy(), new DefaultHttpResponseFactory());
    httpService.setParams(params);
    httpService.setHandlerResolver(registry);

    Socket socket = serverSocket.accept();
    DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
    conn.bind(socket, params);

    HttpContext context = new BasicHttpContext();
    httpService.handleRequest(conn, context);
    socket.close();
    conn.shutdown();

    serverSocket.close();

回应:

# curl -X FOO -i http://127.0.0.1:8000
HTTP/1.0 501 Not Implemented
Content-Length: 26
Content-Type: text/plain; charset=US-ASCII
Connection: Close

FOO method not supported

除非方法是 GET、POST 等，否则请求行不会写入 System.out。

解决方案:我需要实现一个 HttpRequestFactory。例如:

    DefaultHttpServerConnection conn = new DefaultHttpServerConnection() {
        @Override
        public DefaultHttpRequestFactory createHttpRequestFactory() {
            return new DefaultHttpRequestFactory() {
                @Override
                public HttpRequest newHttpRequest(final RequestLine requestline) {
                    return new BasicHttpRequest(requestline);
                }
                @Override
                public HttpRequest newHttpRequest(final String method, final String uri) {
                    return new BasicHttpRequest(method, uri);
                }
            };
        }
    };

Answer 1

看起来您不需要重写 doService()。您需要为您的方法实现一个处理程序并确保

    handler = this.handlerResolver.lookup(requestURI);

返回您的处理程序。我认为您做到了，但由于某种原因找不到您的处理程序。我敢打赌你没有正确注册它。