上传的NodeJS的base64图像蔚蓝Blob存储结果＆QUOT; ResourceNotFound＆QUOT;错误 [英] Nodejs uploading base64 image to azure blob storage results to "ResourceNotFound" error

问题描述

下面是POST请求 JSON ：

  {
    名：images.jpg
    \"file\":\"data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBxQTEhIUEhIUFBUV…K9rk8hCAEkjFMUYiEAI+nHIpsQh0AkisDYRTOiCAbWVtgCtI6IlkHh7LDTQXLH0EIQBj//2Q==\"
}
 

和这里的要求在我的节点控制器/上传的路线，我使用 createBlockBlobFromText（）从<一个HREF =htt​​ps://www.npmjs.com/package/azure-storage相对=nofollow> Azure的存储空间。

  VAR蔚蓝=要求（'Azure的存储'）;
VAR blobSvc = azure.createBlobService（'myblob.blob.core.windows.net/mycontainer'，THE_KEY）;controllers.upload =功能（REQ，资源，下一个）{    VAR的startDate =新的日期（）;
    VAR expiryDate =新的日期（的startDate）;    VAR sharedAccessPolicy = {
        AccessPolicy：{
            权限：az​​ure.BlobUtilities.SharedAccessPermissions.WRITE，
            开始：的startDate，
            有效期：expiryDate
        }
    };    VAR sharedAccessSignatureToken = blobSvc.generateSharedAccessSignature（'资源'，req.body.file，sharedAccessPolicy）;
    变种sharedBlobService = azure.createBlobServiceWithSas（'？'blobSvc.host.primaryHost +/+myContainer中'+ sharedAccessSignatureToken）;    sharedBlobService.createBlockBlobFromText（'myContainer中'，req.body.name，req.body.file，功能（错误，因此，响应）{
        如果（错误）{
            res.send（错误）;
            返回;
        }
        res.send（结果）;
    }）;}
 

但是我收到此错误。

  {
    code：ResourceNotFound
    状态code：404，
    的requestId：bffa6099-0001-000b-53f9-80d18a000000
}
 

解决方案

需要修改的夫妇：

• 有效期限应大于开始日期。


• 共享访问签名应使用同一容器名称。


• 共享访问签名应在文件名传递，而不是文件内容。

这些改变之后，code将类似于这样：

  VAR sharedAccessSignatureToken = blobSvc.generateSharedAccessSignature（'myContainer中'，req.body.name，sharedAccessPolicy）;
VAR sharedBlobService = azure.createBlobServiceWithSas（blobSvc.host，sharedAccessSignatureToken）;sharedBlobService.createBlockBlobFromText（'myContainer中'，req.body.name，req.body.file，功能（错误，因此，响应）{
        如果（错误）{
            res.send（错误）;
            返回;
        }
        res.send（结果）;
    }）;
 

Here is the post request JSON :

{
    "name":"images.jpg",
    "file":"data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBxQTEhIUEhIUFBUV…K9rk8hCAEkjFMUYiEAI+nHIpsQh0AkisDYRTOiCAbWVtgCtI6IlkHh7LDTQXLH0EIQBj//2Q=="
}

And here's my node controller under the request /upload route, I am using createBlockBlobFromText() from azure-storage.

var azure = require('azure-storage');
var blobSvc = azure.createBlobService('myblob.blob.core.windows.net/mycontainer', THE_KEY);

controllers.upload = function (req, res, next){

    var startDate = new Date();
    var expiryDate = new Date(startDate);

    var sharedAccessPolicy = {
        AccessPolicy: {
            Permissions: azure.BlobUtilities.SharedAccessPermissions.WRITE,
            Start: startDate,
            Expiry: expiryDate
        }
    };

    var sharedAccessSignatureToken = blobSvc.generateSharedAccessSignature('resources', req.body.file, sharedAccessPolicy);
    var sharedBlobService = azure.createBlobServiceWithSas(blobSvc.host.primaryHost + '/' + 'mycontainer' + '?' + sharedAccessSignatureToken);

    sharedBlobService.createBlockBlobFromText('mycontainer', req.body.name, req.body.file, function(error, result, response) {
        if (error) {
            res.send(error);
            return;
        }
        res.send(result);
    });

} 

However I am getting this error.

{
    "code": "ResourceNotFound",
    "statusCode": 404,
    "requestId": "bffa6099-0001-000b-53f9-80d18a000000"
}

解决方案

Couple of changes needed:

• expiration date should be greater than start date.
• shared access signature should use same container name.
• shared access signature should be passed in file name, not file content.

After these changes, the code would be similar to this:

var sharedAccessSignatureToken = blobSvc.generateSharedAccessSignature('mycontainer', req.body.name, sharedAccessPolicy);
var sharedBlobService = azure.createBlobServiceWithSas(blobSvc.host, sharedAccessSignatureToken);

sharedBlobService.createBlockBlobFromText('mycontainer', req.body.name, req.body.file, function(error, result, response) {
        if (error) {
            res.send(error);
            return;
        }
        res.send(result);
    });

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