blob

How to Convert a javascript object to utf-8 Blob for download?

由 戏子无情 提交于 2020-01-06 04:33:48
问题 I've been trying to find a solution that works but couldn't find one. I have an object in javascript and it has some non-english characters in it. I'm trying the following code to convert the object to a blob for download. When I click to download the content, when opening the downloaded JSON the non-English characters are gibberish. It's a simple object like this one: {name: "שלומית", last: "רעננה"} function setJSONForDownload(obj) { obj = obj || []; // obj is the array of objects with non

Preventing azure blob from being accessed by other service while it's being created

由 时光总嘲笑我的痴心妄想 提交于 2020-01-05 10:33:28
问题 Azure blob API sometimes looks like it's been designed by aliens. Like designed for some very exotic use cases when most simple ones require jumping through the hoops. Here is one such. I have two worker roles. One is creating blobs, another one is processing them (and moving to "completed" folder when processing is done). The blob size can be moderately big, like 100 MB. Obviously, I don't want second role to start reading the blob before the blob has all the data. Okay, one can expect the

Preventing azure blob from being accessed by other service while it's being created

由 蓝咒 提交于 2020-01-05 10:33:00
问题 Azure blob API sometimes looks like it's been designed by aliens. Like designed for some very exotic use cases when most simple ones require jumping through the hoops. Here is one such. I have two worker roles. One is creating blobs, another one is processing them (and moving to "completed" folder when processing is done). The blob size can be moderately big, like 100 MB. Obviously, I don't want second role to start reading the blob before the blob has all the data. Okay, one can expect the

how to upload a image in jsp and store database as blob

由 折月煮酒 提交于 2020-01-05 08:22:05
问题 <%@page import="java.sql.*" %> <html> <form method="get" action="blobexcode.jsp" onsubmit="txtvalidate()"> <head> <style type="text/css"> body{ background-color:#d0e4fe; } </style> </head> <body> <table> <tr> <td> Customer Name <input type="text" name="Customername" id="customername"> </td> </tr> <tr> <td> Customer Mob: <input type="text" onkeypress="return isNumberKey(event)" name="Customerphone" id="customerphone" > </td> </tr> <tr> <td> Upload File:  <input type="file" id="f" name="f" > <

ORA-01460: unimplemented or unreasonable conversion requested blob insert

由 懵懂的女人 提交于 2020-01-05 08:04:08
问题 I am trying to insert an blob into a database . For this I am using c++ and microsoft ODBC driver . The app works fine with files that have less than 4000 bits . When i am trying to insert a file that has more than 4000 bytes , meaning 3,9 KB it returns : ORA-01460: unimplemented or unreasonable conversion requested . The database is oracle 11.2.0 . I have searched the internat for a solution but find none . How could i solve this problem ? What can i do ? The code for my insert function is :

javascript excellentexport blob issue

由 社会主义新天地 提交于 2020-01-05 04:55:26
问题 I have a web page that generates a report with about 1000 - 5000 records (14 columns). The code: excel: function(anchor, table, name) { table = get(table); var ctx = {worksheet: name || 'Worksheet', table: table.innerHTML}; var hrefvalue = uri.excel + base64(format(template.excel, ctx)); anchor.href = hrefvalue; // Return true to allow the link to work return true; }, This works if the records are about 1500 but if its more than 2000, it doesnt. I saw this post how to export table as excel

determine if blob has an image in java

由 删除回忆录丶 提交于 2020-01-05 04:54:11
问题 I know and i am paranoid that this would be tagged DUPLICATE However i am stuck at something which i cannot resolve myself so i need your help. Basically i abstracted concept of reading first 8 bytes from the Image(any) and depending on that decide if it falls under any of types(PNG,JPEG,GIF) . I am trying to acheive this in Java. package examples; import java.io.File; import java.io.FileInputStream; import java.io.PrintStream; import org.apache.commons.io.IOUtils; public class BlobCheck {

AngularJS : How to send files via websocket?

由 僤鯓⒐⒋嵵緔 提交于 2020-01-05 04:05:11
问题 I am new to websocket and I have been assigned an existing working chat module which, for now, just sends messages to other users. I have been asked to integrate feature where a user can send "attachments" to each other. FYI, I came across this link which says few point but I need more clarity. My questions: What is the server-side requirement there for its implementation? Can someone provide a little elaborated answer? More codes rather than words are highly appreciated. Do I need to use use

CLOB value in out/return from plsql (invalid LOB locator specified: ORA-22275)

由 大兔子大兔子 提交于 2020-01-04 18:15:00
问题 I've got stored plsql procedure, that takes big text from file create or replace procedure dbst_load_a_file( p_file_name in varchar2, l_clob out clob ) as l_bfile bfile; dst_offset number := 1 ; src_offset number := 1 ; lang_ctx number := DBMS_LOB.DEFAULT_LANG_CTX; warning number; begin l_bfile := bfilename( 'SCHEMES_OF_PS', p_file_name ); dbms_lob.fileopen( l_bfile ); dbms_lob.loadclobfromfile( DEST_LOB => l_clob , SRC_BFILE => l_bfile , AMOUNT => dbms_lob.getlength( l_bfile ) , DEST_OFFSET

CLOB value in out/return from plsql (invalid LOB locator specified: ORA-22275)

由 落爺英雄遲暮 提交于 2020-01-04 18:14:22
问题 I've got stored plsql procedure, that takes big text from file create or replace procedure dbst_load_a_file( p_file_name in varchar2, l_clob out clob ) as l_bfile bfile; dst_offset number := 1 ; src_offset number := 1 ; lang_ctx number := DBMS_LOB.DEFAULT_LANG_CTX; warning number; begin l_bfile := bfilename( 'SCHEMES_OF_PS', p_file_name ); dbms_lob.fileopen( l_bfile ); dbms_lob.loadclobfromfile( DEST_LOB => l_clob , SRC_BFILE => l_bfile , AMOUNT => dbms_lob.getlength( l_bfile ) , DEST_OFFSET
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