java - 100 继续使用 Jersey2+ 和 Jetty9+

Question

我看到我的 jersey+jetty 服务器在请求传递到我的处理程序之前响应 100 continue header 。我不想发送 100-Continue，而是根据请求的 URI/ header 发送 3xx 响应。

这是调用 request.getInputStream() 的 org.glassfish.jersey.servlet.WebComponent 类

 public Value<Integer> service(
        final URI baseUri,
        final URI requestUri,
        final HttpServletRequest servletRequest,
        final HttpServletResponse servletResponse) throws ServletException, IOException {

    ContainerRequest requestContext = new ContainerRequest(baseUri, requestUri,
            servletRequest.getMethod(), getSecurityContext(servletRequest), new ServletPropertiesDelegate(servletRequest));
    requestContext.setEntityStream(servletRequest.getInputStream());
    addRequestHeaders(servletRequest, requestContext);

当请求请求的输入流时，Jetty 会发送 100 Continue header 。来自 org.eclipse.jetty.server.Request

@Override
public ServletInputStream getInputStream() throws IOException
{
    if (_inputState != __NONE && _inputState != _STREAM)
        throw new IllegalStateException("READER");
    _inputState = _STREAM;

    if (_channel.isExpecting100Continue())
        _channel.continue100(_input.available());

    return _input;
}

它调用 HttpChannel 来发送 100 Continue header

 /**
 * If the associated response has the Expect header set to 100 Continue,
 * then accessing the input stream indicates that the handler/servlet
 * is ready for the request body and thus a 100 Continue response is sent.
 *
 * @throws IOException if the InputStream cannot be created
 */
public void continue100(int available) throws IOException
{
    // If the client is expecting 100 CONTINUE, then send it now.
    // TODO: consider using an AtomicBoolean ?
    if (isExpecting100Continue())
    {
        _expect100Continue = false;

        // is content missing?
        if (available == 0)
        {
            if (_response.isCommitted())
                throw new IOException("Committed before 100 Continues");

            // TODO: break this dependency with HttpGenerator
            boolean committed = sendResponse(HttpGenerator.CONTINUE_100_INFO, null, false);
            if (!committed)
                throw new IOException("Concurrent commit while trying to send 100-Continue");
        }
    }
}

如何防止 jersey+jetty 发回 100 continue 直到请求到达 jersey 标记的 URI 路径方法？

Answer 1

使用期望:100-Continue处理..

如果您想响应请求的该部分，则:

• 不要尝试访问请求参数(这需要读取输入流来处理所有可能的参数源)
• 不要尝试访问请求输入流(这意味着您正在接受100-Continue期望并准备好接收实际的请求正文内容)
• 不要尝试访问请求读取器(这也会打开请求输入流)
• 不要尝试使用 servlet 异步 I/O 层(这会打开请求输入流和响应输出流)
• 请使用 HttpServletResponse 发送备用状态代码和/或响应正文内容。

这都是标准的 Servlet/Jetty 行为。