blob

How to store .net core wwwroot files in azure blob without separating it into another project?

由 ぐ巨炮叔叔 提交于 2020-01-03 15:37:08
问题 I am unaware of any azure / visual studio tool that would track changes in the wwwroot folder and update a correlating blob storage container (or any other option) I am not sure if this can be part of a publishing profile configuration, or the task list window. I am not familiar with powershell so an example would be needed if that is the only solution. If the solution is a script than I would need to know how to tie it into the publish or build process. 来源： https://stackoverflow.com

Handling BLOBs in Entity Framework 4.0 in a stream-fashion

由 戏子无情 提交于 2020-01-03 08:45:21
问题 Is it possible to handle (read and write) binary data to SQL Server using Entity Framework 4.0 using streams? (i.e.: not the whole content shipped in a byte array) An example could be taken from Download and Upload images from SQL Server via ASP.Net MVC which illustrates the way to stream nicely data from SQL Server in an example available for ASP.NET MVC. However it requires direct access to the DB and I am curious whether this could be done using an ORM. 回答1: Unfortunately, this is not

How to view blob data in Oracle SQL Developer

由 情到浓时终转凉″ 提交于 2020-01-03 07:39:07
问题 How can I read blob data in Oracle SQL Developer. It is stored in byte[] format. Is there any possibility to read in string format. 回答1: Follow these steps in Oracle SQL Developer - Open data window of your table. The BLOB cell will be named as (BLOB) . Right click the cell. You will see a pencil icon. Click on it. It will open a blob editor window. You would find two check boxes against the option View as : Image or Text . Select the appropriate check box. If above step is still convincing,

用ajax下载字节流形式的excel文件

由 二次信任 提交于 2020-01-02 08:03:50
原因：ajax请求只是个“字符型”的请求，即请求的内容是以文本类型存放的。文件的下载是以二进制形式进行的，ajax没法解析后台返回的文件流，所以无法处理二进制流response输出来下载文件。 解决方法：使用form表单提交实现文件下载 1，后台代码实现方法： // 生成excel文件 @RequestMapping(value = "/study", method = RequestMethod.POST) public void study(@RequestBody ParamVO paramVO, HttpServletResponse response) throws UnsupportedEncodingException { response.setContentType("application/octet-stream;charset=utf-8"); response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-disposition", "attachment;filename=" + new String(paramVO.getFileName().getBytes("utf-8"), "iso-8859-1")); try

Javascript: how to convert hex data to binary and write it into a file

由 浪尽此生 提交于 2020-01-02 06:44:12
问题 I have a bunch of hex values and I have to convert it into binary data before write them into a file. I trasformed the hex string in an array of integers, then I convert each integer to a char: // bytes contains the integers str = String.fromCharCode.apply(String, bytes); now I create the blob file and download it: var blob = new Blob([str], {type: "application/octet-stream"}); saveAs(blob, "file.bin"); but something goes wrong: if I print the length of bytes and the length of str I have the

How to INSERT binary std::string into BLOB

由 谁说胖子不能爱 提交于 2020-01-02 05:19:05
问题 I have binary std::string and I need insert it into the BLOB (MySQL) using simple data layer I have. So, I need to execute query: ExecuteSQL((LPTSTR)strQ) . When I am creating this query string (strQ) I cannot add anything to the string after I add this binary string - it just kind if terminated and nothing can be added. I do not want to use mysql_real_escape_string because i want to keep it not only for MySQL. Anybody to HELP PLEASE!!! 回答1: Assuming you have code that looks something like

Oracle 10: Using HEXTORAW to fill in blob data

由 ＊爱你＆永不变心＊ 提交于 2020-01-02 03:37:05
问题 We have a table in Oracle with a BLOB column that needs to be filled with a small amount of arbitrary byte data--we will never put in more than 4000 bytes of data. I am working with an existing C++ OCI-based infrastructure that makes it extremely difficult to use bind variables in certain contexts, so I need to populate this BLOB column using only a simple query. (We are working to modernize it but that's not an option today,) We had some luck with a query like this: UPDATE MyTable SET

SQLite: insert binary data from command line

由 倖福魔咒の 提交于 2020-01-02 03:36:11
问题 I have this SQLite table: create table mytable ( aid INTEGER NOT NULL PRIMARY KEY, bid INTEGER NOT NULL, image BLOB ); And I want to insert a binary file into the image field in this table. Is it possible to do it from the sqlite3 command line interface? If so, how? I'm using Ubuntu. Thank you! 回答1: You may use a syntax like : echo "insert into mytable values(1,1, \"`cat image`\")" | sqlite3 yourDb i'm not sure for the " around blob's value. Note the backquotes around cat command, means the

convert blob to clob

由 谁都会走 提交于 2020-01-02 02:42:07
问题 I'm using oracle 11g and I'm trying to find out the length of a text. I will normally use select length(myvar) from table, but I can't do that. The table which I want to query has a BLOB column that saves characters or photos. I want to know the number of characters that have my BLOB column. I tried to convert my BLOB into a char using UTL_RAW.CAST_TO_VARCHAR2(myblob) from table, but this functions isnt't working correctly or maybe I'm making a mistake. For example: My BLOB have the word

How to convert VARCHAR2 to BLOB inside Oracle 11g PL/SQL after ORA-06502

由 蓝咒 提交于 2020-01-02 02:18:54
问题 I have a function, that calculates hash value of big string! First of all I wrote a cursor T1_CUT, which can include variable count of SELECT statements, something like: SELECT T1.COL1||T1.COL2||...||T1.COLn FROM T1 WHERE id=documentid SELECT T2.COL1||T2.COL2||...||T2.COLn FROM T2 WHERE id=documentid ... SELECT Tn.COL1||Tn.COL2||...||Tn.COLn FROM Tn WHERE id=documentid Each SELECT can contain one or more rows. So, I concat ALL values in rows in each SELECT and ALL SELECTs values in one big
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