在REST请求集元数据把一滴在AZURE [英] Set metadata in REST request to put blob in AZURE

问题描述

我能够利用Azure的提供REST API来上传文件到蔚蓝的斑点。

i am able to upload file to azure blob using REST api provided by Azure.

我想在我做了放一滴请求的时间设置的元数据，如图所示的这里我是unble上传文件，并得到以下异常 org.apache.http.client.ClientProtocolException 。

i want to set metadata at the time i am doing request for put blob, when i am setting it into header as shown here i am unble to upload file and getting following exception org.apache.http.client.ClientProtocolException.

从code以下的最后一行

from the last line of the code below

    HttpPut req = new HttpPut(uri);
    req.setHeader("x-ms-blob-type", blobType);
    req.setHeader("x-ms-date", date);
    req.setHeader("x-ms-version", storageServiceVersion);
    req.setHeader("x-ms-meta-Cat", user);
    req.setHeader("Authorization", authorizationHeader);

    HttpEntity entity = new InputStreamEntity(is,blobLength);
    req.setEntity(entity);

    HttpResponse response = httpClient.execute(req);

就同​​一

，我有两个问题。

regarding the same, i have two questions.

1. 可以设置不同的元数据，避免文件的覆盖？ 见我的问题在这里同样

如果是针对第一个问题，如何设置的元数据REST请求把一滴到Azure的？

if Yes for first question, how to set metadata in REST request to put blob into Azure?

请帮忙

推荐答案

所以，一些事情会在这里。

So a few things are going here.

对于你得到的错误，这是因为计算授权头，当你不添加元数据标头。请仔细阅读构建规范化的标题字符串部分此处的 http://msdn.microsoft.com/en-us/library/windowsazure/dd179428.aspx 。

Regarding the error you're getting, it is because you're not adding your metadata header when calculating authorization header. Please read Constructing the Canonicalized Headers String section here: http://msdn.microsoft.com/en-us/library/windowsazure/dd179428.aspx.

，你需要改变code的以下行（从您的博客文章）

Based on this, you would need to change the following line of code (from your blog post)

String canonicalizedHeaders = "x-ms-blob-type:"+blobType+"\nx-ms-date:"+date+"\nx-ms-version:"+storageServiceVersion;

到

String canonicalizedHeaders = "x-ms-blob-type:"+blobType+"\nx-ms-date:"+date+"\nx-ms-meta-cat"+user+"\nx-ms-version:"+storageServiceVersion;

（注意：我刚才在记事本中做出这些改变，使他们可能无法正常工作，请去我上面提到的正确创建规范化头串链接

(Note: I have just made these changes in Notepad so they may not work. Please go to the link I mentioned above for correctly creating the canonicalized headers string.

可以设置不同的元数据，避免文件的覆盖？

can setting different metadata, avoid overwriting of file?

不知道你的意思是什么。您可以通过执行 设置斑点更新BLOB的元数据元数据 在博客上操作。

Not sure what you mean by this. You can update metadata of a blob by performing Set Blob Metadata operation on a blog.

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