Websave on csv returns empty file

Question

Karsten Reuß 2019-4-5

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/454583-websave-on-csv-returns-empty-file

编辑： Karsten Reuß 2019-4-6

I am trying to download a file with websave.

While downloading the csv with my browser works fine, websave returns an empty csv.

test = websave("test.csv","http://stooq.com/q/d/l/?s=^aor&d1=20190303&d2=20190405&i=d")

Any ideas why this happens and how to fix this?

Like modifying the weboptions?

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Answer 1

Cris LaPierre 2019-4-5

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https://ww2.mathworks.cn/matlabcentral/answers/454583-websave-on-csv-returns-empty-file#answer_369229

I have an idea. When I go to the url specified in the websave command (http://stooq.com/q/d/l/?s=^aor&d1=20190303&d2=20190405&i=d), I just get a blank webpage.

Try using the url that points directly to the csv file.

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Karsten Reuß 2019-4-5

在 MATLAB Online 中打开

Thanks for the hint.

Unfortunately it did not work.

A full link would be:

test = websave('test.csv','https://stooq.com/q/d/l/?s=^aor&d1=20190401&d2=20190405&i=d/^aor_d.csv')

My IE actually showed a blank page with the shorter link, too. Firefox opened directly. With the full link IE now opens the file, just MATLAB does not.

I also tried enabling TLSv1.2. with a java.opts already, but it didn't help either.

Cris LaPierre 2019-4-5

The data might not be stored on a RESTful server.

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Answer 2

Karsten Reuß 2019-4-5

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/454583-websave-on-csv-returns-empty-file#answer_369291

在 MATLAB Online 中打开

I found one workaround.

web('http://stooq.com/q/d/l/?s=^aor&d1=20190303&d2=20190405&i=d', '-browser')

Then Firefox (my standard browser) opens and downloads the file correctly. The file appears in my firefox download folder. Then I can rename it can move it to where I want.

But as this is kinda inconvenient, maybe someone still has a more elegant solution?