Apache HttpClient空响应头

1 回答

• 1

  并不是说我认为这种方法是个好主意，但这就是Apache HttpClient可以做到的

  ---

  static class CustomHttpConnection extends DefaultBHttpClientConnection {
  
      public CustomHttpConnection(final int buffersize) {
          super(buffersize);
      }
  
      @Override
      public SessionInputBuffer getSessionInputBuffer() {
          return super.getSessionInputBuffer();
      }
  }
  

  ---

  // Create protocol processor
  HttpProcessor processor = HttpProcessorBuilder.create()
          .addAll(new RequestContent(),
                  new RequestTargetHost(),
                  new RequestConnControl(),
                  new RequestUserAgent("HTTP/1.1"))
          .build();
  
  // Target host
  InetSocketAddress target = new InetSocketAddress("localhost", 8080);
  
  // Create custom connection that exposes its session input buffer
  CustomHttpConnection conn = new CustomHttpConnection(10 * 1024);
  try {
  
      // Open socket
      Socket socket = new Socket();
      socket.connect(target, 5000);
      // Bind it to the connection
      conn.bind(socket);
  
      // Create and initialize request
      HttpGet request = new HttpGet("/");
      // Force connection close
      request.addHeader(HTTP.CONN_DIRECTIVE, HTTP.CONN_CLOSE);
  
      // Create and initialize execution context
      HttpClientContext context = HttpClientContext.create();
      context.setTargetHost(new HttpHost(target.getHostName(), target.getPort()));
      context.setRequestConfig(RequestConfig.DEFAULT);
      context.setAttribute(HttpClientContext.HTTP_REQUEST, request);
      context.setAttribute(HttpClientContext.HTTP_CONNECTION, conn);
  
      // Process request
      processor.process(request, context);
  
      // Send request
      conn.sendRequestHeader(request);
      if (request instanceof HttpEntityEnclosingRequest) {
          conn.sendRequestEntity(((HttpEntityEnclosingRequest) request));
      }
      conn.flush();
  
      SessionInputBuffer connSessionInputBuffer = conn.getSessionInputBuffer();
      IdentityInputStream instream = new IdentityInputStream(connSessionInputBuffer);
      int l;
      byte[] buff = new byte[1024];
      while ((l = instream.read(buff)) != -1) {
          System.out.println(new String(buff, 0, l, Consts.ASCII));
      }
  } finally {
      conn.close();
  }
  

  回复于 2024-04-29T03:27:39+08:00