private RequestBuilder addFormParams(RequestBuilder requestBuilder, Request request) {
        if (request.getRequestBody() != null) {
            ByteArrayEntity entity = new ByteArrayEntity(request.getRequestBody().getBody());
            entity.setContentType(request.getRequestBody().getContentType());
            requestBuilder.setEntity(entity);
        }
        return requestBuilder;
    }
@author code4crafter@gmail.com
        Date: 17/3/18
        Time: 11:28

@since 0.7.0
webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpUriRequestConverter.java