blob

问题 I am trying to enter data into mysql table Fruitbox .But while entering data I am getting error Fruitpdf cannot be null . I created fruitbox table as follows: Fruitname(varchar(100), Fruitpdf(blob), Fruitprice(int) Fruitpdf column contains pdf files of fruit. My file mango.pdf in desktop is size of 190 KB. I wrote following query but getting error " Fruitpdf cannot be null " while executing sql statement. INSERT INTO Fruitbox (Fruitname, Fruitpdf, Fruitprice) VALUES ('Mango', LOAD_FILE('C:

问题 Using the Fetch API I'm able to make a network request for a large asset of binary data (say more than 500 MB) and then convert the Response to either a Blob or an ArrayBuffer . Afterwards, I can either do worker.postMessage and let the standard structured clone algorithm copy the Blob over to a Web Worker or transfer the ArrayBuffer over to the worker context (making effectively no longer available from the main thread). At first, it would seem that it would be much preferable to fetch the

问题 public static void unzipFiles(java.sql.Blob zip) throws Exception{ String paths = ""; byte[] blobAsBytes = zip.getBytes(1, (int) zip.length()); ZipInputStream zis = new ZipInputStream(zip.getBinaryStream(), StandardCharsets.UTF_8); ZipEntry zipEntry = null; while ((zipEntry = zis.getNextEntry()) != null) { paths=zipEntry.getName()+" "; } Connection conn = DriverManager.getConnection("jdbc:default:connection:"); String sql = "INSERT INTO E (FILENAME) VALUES (:paths)"; PreparedStatement pstmt =

问题 I have an Android application that takes a photo, converts the bitmap to Base64 and submits the Base64 string to a MySQL database (via PHP) to be stored as a longblob. This part works great! In fact, I can download the longblob from phpMyAdmin as a perfect Base64 string and easily convert to a JPEG photo. The problem is my PHP code for getting the blob returns an empty string: { "owner":"Unknown", "pet_name":"Unknown", "last_seen":"2019-04-09 11:17:19", "contact":"999-888-7654", "description"

问题 I am trying to update a User Profile by making a multipart/form-data put request (from my vue frontend using axios) containing a png blob image file. I receive an error message: File extension “” is not allowed. This is the File Field on the Userprofile Model: profile_picture = models.FileField( _("Profile Pictures"), upload_to="profile_picture", max_length=100, blank=True, null=True, ) These are the signals I use in the Userprofile model to save and update the Model. @receiver(post_save,

问题 I'm trying to create an assets loader based on XMLHttpRequest only. I'm loading images with the help of XMLHttpRequest, getting it's responce of "blob" type and converting it to a normal html element. Something like this: var request = new XMLHttpRequest(); var image; var blob; request.onreadystatechange= function() { if (request.readyState === 4) { if (request.status === 200) { blob = request.response; image = new Image(); image.src = window.URL.createObjectURL(blob); } } }; request

问题 seemingly simple task. I just want to rename a blob file, I know I have to copy it to rename or something, then delete the original but this is proving tricky. I have created the storage context (New-AzureStorageContext), and got the blob (Get-AzureStorageBlob), and found Start-AzureStorageBlobCopy, but how to I actually rename it? I'd like to do this within the same container if possible as well. Ideally I'd run it in an Azure Runbook and call it using a webhook I Azure Data Factory v2. I

问题 I have successfully recorded and added the recorded audio and placed it in the audio tag of my HTML page. <audio controls="" src="blob:https://localhost:3000/494f62b9-0513-4d1c-9206-6569083a2661"></audio> Also, I have successfully got the blob source url from the source tag using this line. var source = document.getElementById("Audio").src; and this is my blob url blob:https://localhost:3000/494f62b9-0513-4d1c-9206-6569083a2661 Now how to convert the blob source url as an audio file and send

问题 I am using Oracle 11g r2 . I have a table that stores images as ORDImage : PHOTOS (phot_id integer , phot_filename varchar2(256) , phot_source ordsys.ordimage) And another temporary table that stores an image uploaded by a user as BLOB . INSERT_TEMP (itemp_id integer, itemp_source blob) I want to move the BLOB image to the PHOTOS table only if does not already exists, by comparing the two images. I need to use SQL/MM Still Image methods as ORDImageSignature methods are deprecated in Oracle

问题 I am using Oracle 11g r2 . I have a table that stores images as ORDImage : PHOTOS (phot_id integer , phot_filename varchar2(256) , phot_source ordsys.ordimage) And another temporary table that stores an image uploaded by a user as BLOB . INSERT_TEMP (itemp_id integer, itemp_source blob) I want to move the BLOB image to the PHOTOS table only if does not already exists, by comparing the two images. I need to use SQL/MM Still Image methods as ORDImageSignature methods are deprecated in Oracle