在REST请求集元数据把一滴在AZURE | 在REST请求集元数据把一滴在AZURE

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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.

可以设置不同的元数据，避免文件的覆盖？

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。

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？

不知道你的意思是什么。您可以通过执行在博客上操作。

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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