I want MATLAB to pull restaurant names from Yelp

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John Davies
John Davies 2020-4-3
回答： Jalaj Gambhir 2020-4-6
I want to pull restaurant names from Yelp when the user gives a location. Not sure how to get information other than the java. I built this using the help section.
citylocation=input('What is your City location? ','s');
statelocation=input('What is your State location? ','s');
link2web=(['https://www.yelp.com/search?find_desc=Restaurants&find_loc=',citylocation,'%2C+',statelocation,'&ns=1']);
%web(link2web)
url = [link2web];
S = webread(url);
options = weboptions('ContentType','text');
textData = webread(url,options)

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回答（1 个）

Jalaj Gambhir
Jalaj Gambhir 2020-4-6
Hi,
For your specific case, if you look at the textData returned (for say, citylocation = 'New York' and statelocation = 'NY'), you can observe that the results are stored in "og:description" tags' content property
The textData contains:
....
<meta property="og:description" content="Best Restaurants in New York, NY - Jacob&#39;s Pickles, Soco, Bunker...."> %%result truncated for readability
<meta property="og:site_name" content="Yelp">
....
So, you need to extract the text between these two tags. This can be easily achieved by 'regexp'
url = [link2web];
S = webread(url);
options = weboptions('ContentType','text');
textData = webread(url,options)
%% Use the following code:
pattern = '((?<=<meta property="og:description" content=").*(?=<meta property="og:site_name"))'
result = regexp(textData,pattern,'match')
This returns result as:
{'Best Restaurants in New York, NY - Jacob&#39;s Pickles, Soco, Bunker...'}

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