0 个投票

I am trying to write a script that generates URLs from 'aa' to 'zz' and pings the website, returning the <TITLE> of the page if the URL exists.
This is what I have done so far. I have no idea what to do next. Could you please help?
v={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
subfolder='www';
s=sprintf('GET http://www.%.edu')
s =
'GET http://www.'
s=sprintf('GET http://www.v%.edu')
s =
'GET http://www.v'

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 采纳的回答

Image Analyst
Image Analyst 2020-10-17

0 个投票

I imagine you'd strip off the "GET " and call webread() with the URL.
v = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
for k = 1 : length(v)
url = sprintf('http://www.%s%s.edu', v{k}, v{k});
fprintf('Now reading %s...\n', url);
pageContents = webread(url);
end
That's untested. Please look up webread() in the help for the correct way to use it.

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Ntombikayise Bhengu
Ntombikayise Bhengu 2020-10-17
Thank you much. This is what I get:
v = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
for k = 1 : length(v)
url = sprintf('http://www.%s%s.edu', v{k}, v{k});
fprintf('Now reading %s...\n', url);
pageContents = webread(url);
end
Now reading http://www.aa.edu...
Now reading http://www.bb.edu...
Error using webread (line 122)
Could not access server. http://www.bb.edu.
The code does not generateany more URLs
Ntombikayise Bhengu
Ntombikayise Bhengu 2020-10-17
I will also look at webread. Thank you so much.
Image Analyst
Image Analyst 2020-10-17
If you want it to keep trying, put the webread() into a try/catch:
v = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
for k = 1 : length(v)
url = sprintf('http://www.%s%s.edu', v{k}, v{k});
fprintf('Now reading %s...\n', url);
try
pageContents = webread(url);
catch ME
% Goes here if web site does not exist, then continues with the loop.
fprintf(' Error : the web site "%s" does not exist or did not repond.\n', url);
end
end
Ntombikayise Bhengu
Ntombikayise Bhengu 2020-10-17
编辑：Rik 2020-10-17
Thank you so much very helpful. how does one generage a code with a combination of letters as well? in sucha way there are 676 possible websites with two letters?
tried this nothing happens.
v = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
z = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
for k = 1 : length(v)
for m = 1 : length(z)
url = sprintf('http://www.%s%s.edu', v{k}, z{m});
fprintf('Now reading %s...\n', url);
try
pageContents = webread(url);
catch ME
% Goes here if web site does not exist, then continues with the loop.
fprintf(' Error : the web site "%s" does not exist or did not repond.\n', url);
end
end
Rik
Rik 2020-10-17
Where is your last end?
Image Analyst
Image Analyst 2020-10-17
编辑：Image Analyst 2020-10-17
Try it this way:
v = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
z = v;
for k = 1 : length(v)
for m = 1 : length(z)
url = sprintf('http://www.%s%s.edu', v{k}, z{m});
fprintf('Now reading %s...\n', url);
try
pageContents = webread(url);
catch ME
% Goes here if web site does not exist, then continues with the loop.
fprintf(' Error : the web site "%s" does not exist or did not respond.\n', url);
end
end
end
Ntombikayise Bhengu
Ntombikayise Bhengu 2020-10-17
Thank you so much. It works. I really appreciate you taking the time to help me.

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