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luojiandan_bi
Helper I
Helper I

'Access-Control-Allow-Origin'

I need to get data from url,but get error:

```javascript

Access to XMLHttpRequest at 'https://gallerybox.makeapie.com/asset/get/s/data-1592366734603-Z-iQwIHJk.json' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

```

what's wrong with me?

1 ACCEPTED SOLUTION
dm-p
Super User I
Super User I

Hi @luojiandan_bi,

Visuals have their domain removed by the main window so that they are sandboxed. One of the effects of this is that if you're attending to load data from an external URL and this site does not allow requests from an empty domain, they are blocked by your browser. This is a common use case for creators in the HTML Content visual, so I've written up a short overview here. This section and the one below it on CORS are worth understanding if you're developing visuals in Power BI - plus the linked articles that detail it further - as these cannot be overcome through conventional means.

Regards,

Daniel





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2 REPLIES 2
luojiandan_bi
Helper I
Helper I

@dm-p 

thanks a lot,very useful replay.

dm-p
Super User I
Super User I

Hi @luojiandan_bi,

Visuals have their domain removed by the main window so that they are sandboxed. One of the effects of this is that if you're attending to load data from an external URL and this site does not allow requests from an empty domain, they are blocked by your browser. This is a common use case for creators in the HTML Content visual, so I've written up a short overview here. This section and the one below it on CORS are worth understanding if you're developing visuals in Power BI - plus the linked articles that detail it further - as these cannot be overcome through conventional means.

Regards,

Daniel





Did I answer your question? Mark my post as a solution!

Proud to be a Super User!


My course: Introduction to Developing Power BI Visuals


On how to ask a technical question, if you really want an answer (courtesy of SQLBI)




View solution in original post

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