NettyHttpFileHandler.java 文件源码

public void sendError(ChannelHandlerContext ctx, HttpResponseStatus status) {
   FullHttpResponse response = new DefaultFullHttpResponse(
         HttpVersion.HTTP_1_1, status, Unpooled.copiedBuffer("Failure: " + status + "\r\n", CharsetUtil.UTF_8));
   response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/plain; charset=UTF-8");

   // Close the connection as soon as the error message is sent.
   ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}