blob

asp.net解决大文件断点续传

大兔子大兔子 提交于 2019-12-13 15:45:34
以ASP.NET Core WebAPI 作后端 API ,用 Vue 构建前端页面,用 Axios 从前端访问后端 API ,包括文件的上传和下载。 准备文件上传的API #region 文件上传 可以带参数 [HttpPost("upload")] public JsonResult uploadProject(IFormFile file, string userId) { if (file != null) { var fileDir = "D:\\aaa"; if (!Directory.Exists(fileDir)) { Directory.CreateDirectory(fileDir); } //文件名称 string projectFileName = file.FileName; //上传的文件的路径 string filePath = fileDir + $@"\{projectFileName}"; using (FileStream fs = System.IO.File.Create(filePath)) { file.CopyTo(fs); fs.Flush(); } return Json("ok"); }else{ return Json("no"); } } #endregion 前端vue上传组件 ( 利用Form表单上传 )

Broken Image from blob data PHP?

Deadly 提交于 2019-12-13 15:31:55
问题 Ok so I know this question has been asked but I still could not figure out what was wrong with my code. I am trying to upload an image to a database and store it as a blob so it can output on the page. Everything works, everything is stored in the mysql database but when I try to echo out the blob it gives me a broken image. Here is my code. $file = $_FILES['image']['tmp_name']; if(!isset($file)) { echo "Please select image."; } else { $image = addslashes(file_get_contents($_FILES['image'][

Views base64 encoded blob in HTML with PHP

耗尽温柔 提交于 2019-12-13 15:09:29
问题 having a bit of trouble Im trying to view a base64 encoded image which is held on my server as a blob. I want to view this inside either with an image tag or echo it as an html file which I can reference to with an image tag. The problem is the blob data returns wrong from my server. <?php $select = "SELECT `data` FROM `sandbox`.`photos` WHERE `id` = 4 LIMIT 0 , 1"; $result = mysql_query($select, $connection); while($row = mysql_fetch_array( $result )){ $blob_data = $row[0]; echo "$blob_data"

Unable to store Blob types in IndexedDB on Safari

耗尽温柔 提交于 2019-12-13 14:16:09
问题 I'm having issues with storing blobs in IndexedDB on Safari version 10.1.2 (also facing the same issue on IOS). I'm using the angular2-indexeddb module wrapper, however - i don't think it's a problem with the module as such. My code works fine in Chrome, however when attempting to put a blob object in the Safari indexedDb, the record always displays as 'null' (see FileData field): I have tried a variety of different blob files (audio, video, html) and they always display as 'null'. No

Best way to store images in PostgreSQL [duplicate]

心已入冬 提交于 2019-12-13 14:12:42
问题 This question already has answers here : Storing Images in PostgreSQL (7 answers) Closed 6 years ago . I am working on a web site that will start off with hundreds of thousands of images in it to hopefully hundreds of millions. Most of the images won't exceed 300K in physical size. What is the best way to store these in PostgreSQL? One thing I know for sure is that the system will be using schemas, partitions, and tablespaces to manage storage. 回答1: If the images do not exceed 300Kb, the

The specified container does not exist

谁说我不能喝 提交于 2019-12-13 12:06:44
问题 Am stuck with this error The specified container does not exist. let me explain, CloudBlobClient blobStorage = GetBlobStorage("upload"); CloudBlockBlob blob = BlobPropertySetting(blobStorage, Guid.NewGuid().ToString().ToLower() + Path.GetExtension(file.FileName)); blob.UploadFromStream(file.InputStream); public static CloudBlobClient GetBlobStorage(string cloudBlobContainserName) { CloudBlobClient blobStorage; try { var storageAccount = CloudStorageAccount.FromConfigurationSetting(

Firefox downloading multiple files at once not possible?

佐手、 提交于 2019-12-13 10:26:49
问题 Downloading multiple blobs in chrome, edge and IE doesn't seem to be a problem, but on Firefox I'm having the problem that most of the time only the last file or max. 2 of them will be "downloaded". I searched for a "download blob" code and adapted it to download more at once and the issue is reproducible on my machine on latest Firefox version on Windows 10, see JS code below in Firefox. var saveData = (function () { var a = document.createElement("a"); document.body.appendChild(a); a.style

Writing to a new Blob in Java

て烟熏妆下的殇ゞ 提交于 2019-12-13 09:54:58
问题 I want to be able to create a new Blob object and then write to it. Originally, my general plan for this was as follows: Create a new blob (null, because there's no Blob constructor) Create a new OutputStream and set it to blob.setBinaryStream(0) Write to the output stream. However, I get a NullPointerException when I try to execute this code. Is there a different way I should be going about this? Any help would be appreciated. Thanks! ~B 回答1: java.sql.Blob is an interface and not a class,

how to convert raw mp3 binary into blob url and play it in audio tag

吃可爱长大的小学妹 提交于 2019-12-13 08:56:58
问题 What im doing is sending mp3 data through websockets as base64 strings and decoding it on browser side now what im trying to do is turn that raw data into a blob and play it in an audio tag but i dont know how can you help also decoding base64 strings is laggy is there a better way JAVASCRIPT var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode:function(e){var t="";var n,r,i,s,o,u,a;var f=0;e=Base64._utf8_encode(e);while(f<e.length){n=e.charCodeAt(f++

How to move blobs from App_Data folder of episerver cms site to azure blob storage hosted in azure cloud

泪湿孤枕 提交于 2019-12-13 07:28:26
问题 How to move blobs stored in App_Data folder of episerver cms website to azure blob storage, hosted in azure cloud environment? 回答1: There is a blob converter package on NuGet which migrates blobs from disk to another provider, e.g. Azure blob storage. 来源: https://stackoverflow.com/questions/42533000/how-to-move-blobs-from-app-data-folder-of-episerver-cms-site-to-azure-blob-stora