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https://issues.apache.org/jira/browse/CB-13639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282978#comment-16282978
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Lorcan Lai edited comment on CB-13639 at 12/8/17 3:28 AM:
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Thank you for [~Sujan12]'s answer. As you said，i needs to add the following
header to its response on server-side?
{code:java}
Access-Control-Allow-Origin: *
{code}
That can be solved.
But what I don't understand is:
# cordova uses the file:// protocol(Phonegap wiki says:"The cross-domain
security policy does not affect PhoneGap applications. Since the html files are
called by webkit with the file:// protocol, the security policy does not
apply."),Why did this happen,and I must to set CORS config on server-side?In
some cases,because of the security policy, we can't change this part of the
server-side Settings.
# I had no problem using Ajax or XMLHttpRequest APIs,why?
was (Author: laishuliang):
Thank you for [~Jan Piotrowski (Sujan)]'s answer. As you said，i needs to add
the following header to its response on server-side?
{code:java}
Access-Control-Allow-Origin: *
{code}
That can be solved.
But what I don't understand is:
# cordova uses the file:// protocol(Phonegap wiki says:"The cross-domain
security policy does not affect PhoneGap applications. Since the html files are
called by webkit with the file:// protocol, the security policy does not
apply."),Why did this happen,and I must to set CORS config on server-side?In
some cases,because of the security policy, we can't change this part of the
server-side Settings.
#I had no problem using Ajax or XMLHttpRequest APIs,why?
> The fetch request has a cross-origin problem
> --------------------------------------------
>
> Key: CB-13639
> URL: https://issues.apache.org/jira/browse/CB-13639
> Project: Apache Cordova
> Issue Type: Bug
> Environment: # cordova6/cordova7
> # 华为（HUAWEI）畅享5S Android5.1.1
> Reporter: Lorcan Lai
> Labels: cross-origin, fetch
>
> I used [fetch](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) to
> request a service，report "...cross-origin..." problem. And then I try to use
> Ajax or XMLHttpRequest to request the same service，there's no problem.
> a part of the content in my config.xml,
> {code:xml}
> <access origin="*">
> <allow-navigation href="http://*/*"; />
> <allow-navigation href="https://*/*"; />
> <allow-navigation href="data:*" />
> {code}
> Cordova is not good for the fetch request?
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