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POHow to upload an image to a blob in Azure?
 

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  1. POHow to upload an image to a blob in Azure?
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    <p>The problem with the code I use is that the file appears in the blob, but as a 0B size file. As if no data was written to the blob.</p> <p>This is the form I use in my JSP:</p> <pre><code>&lt;form method="POST" action="UploadServlet" enctype="multipart/form-data" &gt; &lt;input type="file" name="file" id="file" /&gt; &lt;br/&gt; &lt;/br&gt; &lt;input type="submit" value="Upload" name="upload" id="upload" /&gt; &lt;/form&gt; </code></pre> <p>And I have the following code in my servlet:</p> <pre><code> try { CloudStorageAccount account; CloudBlobClient serviceClient; CloudBlobContainer container; CloudBlockBlob blob; account = CloudStorageAccount.parse(storageConnectionString); serviceClient = account.createCloudBlobClient(); container = serviceClient.getContainerReference("gettingstarted"); container.createIfNotExist(); // Set anonymous access on the container. BlobContainerPermissions containerPermissions; containerPermissions = new BlobContainerPermissions(); containerPermissions.setPublicAccess(BlobContainerPublicAccessType.CONTAINER); container.uploadPermissions(containerPermissions); FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload fileUpload = new ServletFileUpload(factory); //process only if its multipart content InputStream is = null; if (ServletFileUpload.isMultipartContent(request)) { List items = fileUpload.parseRequest(request); Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (!item.isFormField()) { is = item.getInputStream(); String name = new File(item.getName()).getName(); System.out.println(name); blob = container.getBlockBlobReference(name); File fileReference = new File(item.getName()); System.out.println(is); blob.upload(is, fileReference.length()); } } } is.close(); request.getRequestDispatcher("hello").forward(request, response); } catch (Exeption e) { } </code></pre>
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      1. POHow to upload an image to a blob in Azure?
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    1. COthis should work, how much do u guys deviate from the standard tutorial?
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      1. POHow to upload an image to a blob in Azure?
      1. USAlbert Cheng
    2. COI think the answer by @Frans is a good catch. Your inputstream `is` is not positioned at the start of the stream. In C# the syntax would be: `is.Seek(0, SeekOrigin.Begin); // Position the stream at the beginning`, just before the `blob.upload()` line.
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      1. POHow to upload an image to a blob in Azure?
      1. USKrishna Gupta
 

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