blocks|key|725452|text|您需要启用存储帐户blob服务上的CORS跨域JavaScript访问。您可以在这里了解更多关于Azure存储和CORS的信息：https://msdn.microsoft.com/en-us/library/azure/dn535601.aspx。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|725453|不久前，我还在同一篇博客上写了一篇文章，你可以在这里看到：http://gauravmantri.com/2013/12/01/windows-azure-storage-and-cors-lets-have-some-fun/。|725454|如果使用.Net存储客户端库，可以使用下面的代码设置CORS规则：|725455|static+void+AddCorsRuleStorageClientLibrary()
{
++++//Add+a+new+rule.
++++var+corsRule+=+new+CorsRule()
++++{
++++++++AllowedHeaders+=+new+List<string>+{+"*"+},
++++++++AllowedMethods+=+CorsHttpMethods.Get
++++++++AllowedOrigins+=+new+List<string>+{+"http://somedomain.com"+},//This+is+the+URL+of+your+application.
++++++++MaxAgeInSeconds+=+1+*+60+*+60,//Let+the+browser+cache+it+for+an+hour
++++};

++++//First+get+the+service+properties+from+storage+to+ensure+we're+not+adding+the+same+CORS+rule+again.
++++var+storageAccount+=+new+CloudStorageAccount(new+StorageCredentials(accountName,+accountKey),+true);
++++var+client+=+storageAccount.CreateCloudBlobClient();
++++var+serviceProperties+=+client.GetServiceProperties();
++++var+corsSettings+=+serviceProperties.Cors;

++++corsSettings.CorsRules.Add(corsRule);
++++//Save+the+rule
++++client.SetServiceProperties(serviceProperties);
}|code-block|syntax|javascript|725456|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/azure/dn535601.aspx|1|http://gauravmantri.com/2013/12/01/windows-azure-storage-and-cors-lets-have-some-fun/^0|1S|1O|0|0|T|2D|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|C|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]|U|$5|P|Q|R|C|$S|V]]]]

You need to enable CORS on your storage account's blob service to cross-domain JavaScript access. You can learn more about Azure Storage and CORS here: <a href="https://msdn.microsoft.com/en-us/library/azure/dn535601.aspx">https://msdn.microsoft.com/en-us/library/azure/dn535601.aspx</a>.

I also wrote a blog post some time ago on the same, which you can read here: <a href="http://gauravmantri.com/2013/12/01/windows-azure-storage-and-cors-lets-have-some-fun/">http://gauravmantri.com/2013/12/01/windows-azure-storage-and-cors-lets-have-some-fun/</a>.

If you're using .Net Storage Client library, you can use code below to set CORS rule:

<pre><code>static void AddCorsRuleStorageClientLibrary()
{
 //Add a new rule.
 var corsRule = new CorsRule()
 {
 AllowedHeaders = new List&lt;string&gt; { "*" },
 AllowedMethods = CorsHttpMethods.Get
 AllowedOrigins = new List&lt;string&gt; { "http://somedomain.com" },//This is the URL of your application.
 MaxAgeInSeconds = 1 * 60 * 60,//Let the browser cache it for an hour
 };

 //First get the service properties from storage to ensure we're not adding the same CORS rule again.
 var storageAccount = new CloudStorageAccount(new StorageCredentials(accountName, accountKey), true);
 var client = storageAccount.CreateCloudBlobClient();
 var serviceProperties = client.GetServiceProperties();
 var corsSettings = serviceProperties.Cors;

 corsSettings.CorsRules.Add(corsRule);
 //Save the rule
 client.SetServiceProperties(serviceProperties);
}
</code></pre>

blocks|key|2241183|text|在Azure存储帐户上启用CORS的最简单方法是使用阿祖尔|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2241184|npm+i+azure-cli+-g|style|CODE|2241185|然后，可以通过命令行配置CORS：|2241186|azure+storage+cors+set
++-a+"storage-account"
++-k+"storage-account-key"
++--blob/table/queue/file
++--cors+"[{\"AllowedOrigins\":\"*\",\"AllowedMethods\":\"GET\",\"MaxAgeInSeconds\":\"86400\",\"AllowedHeaders\":\"*\",\"ExposedHeaders\":\"*\"}]"|code-block|syntax|javascript|2241187|entityMap|0|LINK|mutability|MUTABLE|url|https://www.npmjs.com/package/azure-cli^0|Q|3|0|0|0|I|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@$A|11|B|12|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|13|8|@]|9|@]|C|$]]|$1|J|3|K|5|L|7|14|8|@]|9|@]|C|$M|N]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

The easiest way to enable CORS on an Azure storage account is by using the <a href="https://www.npmjs.com/package/azure-cli">azure-cli</a>

<code>npm i azure-cli -g</code>

Then, it is possible to configure CORS through the command line:

<pre><code>azure storage cors set
 -a "storage-account"
 -k "storage-account-key"
 --blob/table/queue/file
 --cors "[{\"AllowedOrigins\":\"*\",\"AllowedMethods\":\"GET\",\"MaxAgeInSeconds\":\"86400\",\"AllowedHeaders\":\"*\",\"ExposedHeaders\":\"*\"}]"
</code></pre>

blocks|key|1089932|text|这里有一个与来自Pier的类似答案，但与新的阿祖尔+v2.0相关。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1089933|az+storage+cors+add+--account-name+$ACCNT_NAME+--account-key+$ACCNT_KEY+\
++++--methods+GET+--origins+'*'+--services+t+--allowed-headers+'*'|code-block|syntax|javascript|1089934|请注意，v2.0是基于python的，而不是基于v1.0的Node.js。|1089935|官方的安装指示是可用的这里，但在我看来，以下是保持系统清洁的更好选择：|1089936|virtualenv+--system-site-packages+-p+python3+~/azure-cli/
source+~/azure-cli/bin/activate
pip3+install+azure-cli|1089937|下面是帮助消息的摘录，该消息与您可能想要更改的特定情况下所需的参数有关。|1089938|--methods++[Required]:+List+of+HTTP+methods+allowed+to+be+executed+by+the+origin.++Allowed
+++++++++++++++++++++++values:+DELETE,+GET,+HEAD,+MERGE,+OPTIONS,+POST,+PUT.
--origins++[Required]:+List+of+origin+domains+that+will+be+allowed+via+CORS,+or+"*"+to+allow+all
+++++++++++++++++++++++domains.
--services+[Required]:+The+storage+service(s)+to+add+rules+to.+Allowed+options+are:+(b)lob,
+++++++++++++++++++++++(f)ile,+(q)ueue,+(t)able.+Can+be+combined.|1089939|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Azure/azure-cli|1|https://learn.microsoft.com/en-us/azure/cli-install-nodejs|2|https://learn.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest^0|M|3|0|0|0|O|4|1|0|B|2|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|D|3|E|5|F|7|18|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|19|8|@]|9|@$A|1A|B|1B|1|1C]]|C|$]]|$1|K|3|L|5|6|7|1D|8|@]|9|@$A|1E|B|1F|1|1G]]|C|$]]|$1|M|3|N|5|F|7|1H|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|1I|8|@]|9|@]|C|$]]|$1|Q|3|R|5|F|7|1J|8|@]|9|@]|C|$G|H]]|$1|S|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]|10|$5|V|W|X|C|$Y|11]]|12|$5|V|W|X|C|$Y|13]]]]

Here's a similar answer than the one from Pier-Luc Gendreau but related to the new <a href="https://github.com/Azure/azure-cli" rel="nofollow noreferrer">azure-cli</a> v2.0.

<pre><code>az storage cors add --account-name $ACCNT_NAME --account-key $ACCNT_KEY \
 --methods GET --origins '*' --services t --allowed-headers '*'
</code></pre>

Note that v2.0 is python based as opposed to the <a href="https://learn.microsoft.com/en-us/azure/cli-install-nodejs" rel="nofollow noreferrer">v1.0</a> which was based on Node.js.

The official installation instruction is available <a href="https://learn.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest" rel="nofollow noreferrer">here</a>, but to me, the following seems a better option to keep the system clean:

<pre><code>virtualenv --system-site-packages -p python3 ~/azure-cli/
source ~/azure-cli/bin/activate
pip3 install azure-cli
</code></pre>

Here's an extract from the help message related to the required parameters your might want to change for your specific case.

<pre><code>--methods [Required]: List of HTTP methods allowed to be executed by the origin. Allowed
 values: DELETE, GET, HEAD, MERGE, OPTIONS, POST, PUT.
--origins [Required]: List of origin domains that will be allowed via CORS, or "*" to allow all
 domains.
--services [Required]: The storage service(s) to add rules to. Allowed options are: (b)lob,
 (f)ile, (q)ueue, (t)able. Can be combined.
</code></pre>

I have a application on www.somedomain.com. Now all my files(enduser uploaded) are stored on Azure storage which has a domain like somesubdomain.blob.core.windows.net. Whenever the user wants to view the document, the public link of the document on azure is added to a iframe source and can be viewed. The only problem is that, that file in many cases is a html with Javascript inclusion, which is trying to access some basic security free variables on the parent which is originally on my first host.

Every time the html file on azure storage tries to access the parent document variables, I get the error "Blocked a frame with origin '<a href="http://somesubdomain.blob.core.windows.net" rel="nofollow">http://somesubdomain.blob.core.windows.net</a>' from accessing a frame with origin "<a href="http://somedomain.com" rel="nofollow">http://somedomain.com</a>". Protocols, domains, and ports must match.'

Any guidance and help on this would be helpful.

Azure Storage CORS

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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