问题
I would like to use the wikipedia API to return the extract from multiple wikipedia articles at once. I am trying, for example, the following request (I just chose the pageids randomly):
http://en.wikipedia.org/w/api.php?format=xml&action=query&pageids=3258248|11524059&prop=extracts&exsentences=1
But it only contains the extract for the first pageid, and not the second. Other properties seem not to have this limitation. For example
http://en.wikipedia.org/w/api.php?format=xml&action=query&pageids=3258248|11524059&prop=categories
will return the categories for both pageids. Is this a bug, or am I missing something?
回答1:
Notice the <query-continue> element. It tells you that to get more of the extracts, you need to specify excontinue=1:
http://en.wikipedia.org/w/api.php?format=xml&action=query&pageids=3258248|11524059&prop=extracts&exsentences=1&excontinue=1
You should be able to get both of them, by specifying exlimit=max:
http://en.wikipedia.org/w/api.php?format=xml&action=query&pageids=3258248|11524059&prop=extracts&exsentences=1&exlimit=max
But this does not seem to work correctly, I'm not sure why.
BTW, categories have similar limitations, which is why your categories query has <query-continue> too and why it doesn't list all categories of the articles.
来源：https://stackoverflow.com/questions/9846795/prop-extracts-not-returning-all-extracts-in-the-wikimedia-api