This is Scrapy downloader middleware that stores response HTMLs to disk.
Turn downloader on, e.g. specifying it in `settings.py`:
DOWNLOADER_MIDDLEWARES = {
'scrapy_html_storage.HtmlStorageMiddleware': 10,
}None of responses by default are saved to disk. You must select for which requests the response HTMLs will be saved:
def parse(self, response):
"""Processes start urls.
Args:
response (HtmlResponse): scrapy HTML response object.
"""
yield scrapy.Request(
'http://target.com',
callback=self.parse_target,
meta={
'save_html': True,
}
)The file path where HTML will be stored is resolved with spider method response_html_path. E.g.:
class TargetSpider(scrapy.Spider):
def response_html_path(self, request):
"""
Args:
request (scrapy.http.request.Request): request that produced the
response.
"""
return 'html/last_response.html'HTML storage downloader middleware supports such options:
- gzip_output (bool) - if True, HTML output will be stored in gzip format. Default is False.
- save_html_on_status (list) - if not empty, sets list of response codes whitelisted for html saving. If list is empty or not provided, all response codes will be allowed for html saving.
Sample:
HTML_STORAGE = {
'gzip_output': True,
'save_html_on_status': [200, 202]
}