blob

How to create empty folder in azure blob storage

由 送分小仙女□ 提交于 2019-12-01 06:53:48
问题 How to create empty folder in azure blob storage just like empty folder in tool "Azure Explorer" 回答1: Technically speaking, you can't have an empty folder in Azure Blob Storage as blob storage has a 2 level hierarchy - blob container and blob. You essentially create an illusion of a folder by prefixing the file name with the folder name you like e.g. assuming you want a style sheet (say site.css) in say css folder, you name the stylesheet file as css/site.css . What some of the tools do is in

java.lang.ClassCastException: oracle.sql.BLOB cannot be cast to oracle.sql.BLOB

由 纵饮孤独 提交于 2019-12-01 06:51:37
I have problem retrieving a blob object from oracle DB to java API with jdbc. The problem is when I execute a Collable statement with a function from the db which return me a blob field this exception is thrown on the line : tempBlob = (oracle.sql.BLOB)cstmt.getObject(1); with this error message : java.lang.ClassCastException: oracle.sql.BLOB cannot be cast to oracle.sql.BLOB. The object which I get from the DB is a instance of oracle.sql.BLOB . The tempBlob variable is a object oracle.sql.BLOB . Where is the problem? Two oracle jar files may be in your classpath. Please remove one jar and

How insert a blob in SQL Server without bulk and using ASP?

由 梦想的初衷 提交于 2019-12-01 06:50:44
问题 I need to upload files 'into' a SQL Server database. I need a solution that doesn't involve bulk inserts. 回答1: Set ObjStr = Server.CreateObject("ADODB.Stream") ObjStr.Type = 1 'AdBinary ObjStr.Open ObjStr.LoadFromFile "D:\file.pdf" 'Evita sql inject Set oPreparedStatementADO = Server.CreateObject("ADODB.Command") oPreparedStatementADO.ActiveConnection = conexao cSql = "INSERT INTO edital_editais(blob_field) values (?); " oPreparedStatementADO.CommandText = cSQL x = ObjStr.Read

XMLHttpRequest to download large HTML5 video in chunks?

由 守給你的承諾、 提交于 2019-12-01 06:33:07
问题 I am trying to load a large video into a tag using XMLHttpRequest. I've successfully gotten this to work with small video files using the following code: window.URL = window.URL || window.webkitURL; var xhr = new XMLHttpRequest(); xhr.open('GET', 'quicktest.mp4', true); xhr.responseType = 'blob'; xhr.onload = function(e) { var video = document.createElement('video'); video.src = window.URL.createObjectURL(this.response); video.autoplay = true; document.body.appendChild(video); }; xhr.send();

7、字符型

由 时光毁灭记忆、已成空白 提交于 2019-12-01 06:17:42
char -- varchar -- text -- blod 1、char和varchar分别称为定长和变长类型 定长效率高 ，查找行纪录时，如果都是定长，完全可以通过行数与行的长度计算出来，文件指针的偏移量 如：char(6),想查找第三个人名，指针只需从存储的首地址往后移动3*6=18个字符就行。 定长浪费空间 ，不论够不够指定长度，实际都占据N个长度，如果不够N个长度，用空格在末尾补至N个长度 如：char(N)，不够N个长度，用空格在尾部补够N个长度，浪费了尾部 char型，不够M格字符用空格补，取出的时候再把右侧的空格删掉，这意味者，如果右侧本身有空格，将会丢失。 对于varchar(N)，不用空格补齐，但是在列内容前，用1-2个字节来标志该列的长度 定长字符空间利用率能达到100%；变长类型不能，每个字段需要额外的1~2个字节存储该字段的长度。 注意：char(M),varchar(M)限制的是字符，不是字节。 如char(2) charset utf8，能存2个utf8字符，比如“中国”，“ab”。 类型 宽度 可存字符 实际字符(i<=M) 实占空间 利用率 char M M i M i/M<=100% varchar M M i i字符+(1~2)字节 i/(i+1~2)<100% char(M),M代表宽度，0<=M<=255之间 varchar(M)

setting blob to null using PreparedStatement

由 我的梦境 提交于 2019-12-01 06:14:41
问题 I am creating webapplication using JSF2.0 where in mysql, I am storing images using datatype as MEDIUMBLOB . To insert values, I am using PreparedStatement as shown below. PreparedStatement psmnt = con.prepareStatement("INSERT INTO sketchesSG002003 (userid, imageTitle, imageData, drawingComments) VALUES (?,?,?,?)"); psmnt.setLong(1, personalInfoId); psmnt.setString(2, sketchesSG002003Title); try { String fileName = FilenameUtils.getName(sketchesSG002003ImageUpload.getName()); File image = new

How to search for a specifc BLOB in SQLite?

由 白昼怎懂夜的黑 提交于 2019-12-01 05:57:35
问题 I write binary data from pictures into my SQLite database into a BLOB field called "icondata". CREATE TABLE pictures(id INTEGER PRIMARY KEY AUTOINCREMENT, icondata BLOB) The code snippet to write the binary data is: SQLcommand.CommandText = "INSERT INTO pictures (id, icondata) VALUES (" & MyInteger & "," & "@img)" SQLcommand.Prepare() SQLcommand.Parameters.Add("@img", DbType.Binary, PicData.Length) SQLcommand.Parameters("@img").Value = PicData This works fine and I can find the BLOB values in

Voice Recorder, Saving Blob file to server - C# , Mvc

由 廉价感情. 提交于 2019-12-01 05:26:39
I need a voice recorder in a project which I am working on and also the recorded voices must be listened later. That Project developed by c# and asp.net mvc. http://demos.subinsb.com/jquery/voice/ I am using a recorder system in that link above. When you click Download it gives you a file .wav format. It is downloaded to your computer but I want to save it to server. This project’s source codes is available below the link. http://demos.subinsb.com/down.php?id=s/rvx90xq1xtpak3xc647n&class=31 I investigate jquery codes: When you click Download $(document).on("click", "#download:not(.disabled)",

java.lang.ClassCastException: oracle.sql.BLOB cannot be cast to oracle.sql.BLOB

由 家住魔仙堡 提交于 2019-12-01 04:51:39
问题 I have problem retrieving a blob object from oracle DB to java API with jdbc. The problem is when I execute a Collable statement with a function from the db which return me a blob field this exception is thrown on the line : tempBlob = (oracle.sql.BLOB)cstmt.getObject(1); with this error message : java.lang.ClassCastException: oracle.sql.BLOB cannot be cast to oracle.sql.BLOB. The object which I get from the DB is a instance of oracle.sql.BLOB . The tempBlob variable is a object oracle.sql

How to read the data in a Blob in WebView on Android?

由 主宰稳场 提交于 2019-12-01 04:23:49
I have a server that creates an object blob on the browser and I want to download this within WebView in an Android app. I tried redirecting the request to the browser instance as well as using the download manager to do this, but neither of them seems to work (Even though if I open up the same page in Chrome, the download operation works there). I tried the following code,it throws error: Android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=blob:https%3A//111.111.111.111%3A8080/40b63131-63b1-4fa4-9451-c6297bbd111a" Edit Android
订阅 blob