scrapy is there a way to print json file without using -o -t parameters

问题

I am usually calling my spider like this:

scrapy crawl Spider -o fileName -t json

and I got the correct data printed in the fileName file as json formated.

Now I want to call my spider like this:

scrapy crawl Spider

my question

is there a way to print the output to a file without using the -o -t parameters?

回答1:

Yes it can be done. add this to your settings

FEED_EXPORTERS = {
 'jsonlines': 'scrapy.contrib.exporter.JsonLinesItemExporter',
}
FEED_FORMAT = 'jsonlines'
FEED_URI = "NAME_OF_FILE.json"

For reference

http://doc.scrapy.org/en/latest/topics/feed-exports.html

来源：https://stackoverflow.com/questions/21933414/scrapy-is-there-a-way-to-print-json-file-without-using-o-t-parameters