与Azure Blob存储的散列不匹配(完整性检查失败)

Question

我在看http://willi.am/blog/2014/07/03/azure-blob-storage-and-node-downloading-blobs/

然而，尽管完全相同的代码，当我下载blobs Azure给出错误:

[错误:哈希不匹配(完整性检查失败)，期望值是…]

正在运行的行是blobService。getBlobToText，其中blobService是到Azure的连接(createBlobService…)

怎么回事?: S

代码如下:

    // Azure test
    function downloadImageAsText(blobService, containerName, blobName) {
         blobService.getBlobToText(
              containerName,
              blobName,
              function(err, blobContent, blob) {
                  if (err) {
                      console.error("Couldn't download blob %s", blobName);
                      console.error(err);
                  } else {
                      console.log("Sucessfully downloaded blob %s", blobName);
                      console.log(blobContent);
                  }
              });
    }
    function uploadImage(blobService, containerName, blobName, fileName) {
      blobService.getBlobProperties(
        containerName,
        blobName,
        function(err, properties, status) {
            if (status.isSuccessful) {
                // Blob exists
            } else {
                blobService.createBlockBlobFromLocalFile(
                    containerName,
                    blobName,
                    fileName,
                    function(error, result, response){
                        if(error){
                            console.log("Couldn't upload file %s", fileName);
                            console.error(error);
                        } else {
                            console.log('File %s uploaded successfully', fileName);
                            downloadImageAsText(blobService, containerName, blobName);
                        }
                    });
            }
        });
    }

    function testAzure() {
      accountName / hash = my details
      var storage = require('azure-storage');
      var blobService = storage.createBlobService(accountName, hash);
      var containerName = 'tst';
      var blobName = 'test.png';
      var fileName = 'test.png';
      blobService.createContainerIfNotExists(containerName, function(err, result, response) {
          if (err) {
              console.log("Couldn't create container %s", containerName);
              console.error(err);
          } else {
              if (result) {
                  console.log('Container %s created', containerName);
                  uploadImage(blobService, containerName, blobName, fileName);
              } else {
                  console.log('Container %s already exists', containerName);
                  uploadImage(blobService, containerName, blobName, fileName);
              }
          }
      });
    }
    function startServer() {
      http = require('http');
      const PORT = 8080;
      var server = http.createServer(handleRequest);
      server.on('listening',function(){
        console.log("Server listening on: http://178.62.117.207:%s", PORT);
      });
      server.listen(PORT);
    }
    startServer();
    testAzure();

Answer 1

如果其他人遇到这种情况;当您存储Buffer对象但检索string时发生

Answer 2

尝试以下操作(修改您提到的博客文章中的代码):

var blobName = 'my-awesome-text-blob';
blobService.getBlobToText(
    containerName,
    blobName, {'disableContentMD5Validation': true },
    function(err, blobContent, blob) {
        if (err) {
            console.error("Couldn't download blob %s", blobName);
            console.error(err);
        } else {
            console.log("Sucessfully downloaded blob %s", blobName);
            console.log(blobContent);
        }
    });

Answer 3

这可能发生，因为许多内部MD5检查失败，当您使用HTTPS时工作方式不同。您可以尝试将您的存储帐户指定为https吗?Like -

var blobService = storage.createBlobServiceAnonymous('https://MyAccountXX.blob.core.windows.net/');

对于我来说，这个下载功能工作得很好。

作为参考，您可以尝试以下实际文档- https://azure.microsoft.com/en-in/documentation/articles/storage-nodejs-how-to-use-blob-storage/

Answer 4

当您存储一个Buffer对象时，您可以使用getBlobToStream来检索它。

const data: Buffer[] = [];
const stream = new PassThrough();
stream.on('data', (d: Buffer) => {
    data.push(d);
});
this.blobStorageContext.service.getBlobToStream(
    this.blobStorageContext.getContainerName(),
     blobName, stream, (error) => {
         if (error) {
           console.log(error);
         } else { 
           console.log(Buffer.concat(data));
         }
});

Answer 5

我最近也遇到了这个问题。不知何故，npm -install azure-storage -g帮助了它。可能是包在npm上被更新了，md5的计算也发生了变化。当我更新了azure-storage包之后，一切都很顺利。