blob

记一次,axios,jq,xhr获取后端,excel数据乱码

由 与世无争的帅哥 提交于 2020-01-10 19:54:40
01: 低版本的jq,不支持二进制数据的解析 01: 版本3.X 02: 设置 xhrFields: { responseType: ‘blob’ }, $ . ajax ( { url : 'http://192.168.10.101:8089/Defect/exportDefectByQuery' , type : 'post' , contentType : 'application/json;charset=UTF-8' , xhrFields : { responseType : 'blob' } , cache : false , data : JSON . stringify ( { action : 'exportDefectByQuery' , current_user_id : "1" } ) , success : function success ( res , textStatus , jqXHR ) { var fileName = decodeURIComponent ( '待办列表' ) var fileType = '.xls' // 这里res.data是返回的blob对象 let blob = new Blob ( [ res ] , { type : 'application/vnd.ms-excel' } ) ; let

Import hex/binary data into mysql

由 泄露秘密 提交于 2020-01-10 09:03:51
问题 I need to import into a mysql server (5.5) a set of large data having one field as a blob. Following the samples of SELECT INTO OUTFILE and LOAD DATA INFILE, it works [almost] fine. However, I have a problem: the generated data in the file for the BLOB has its actually binary representation. The generated file looks like this (3rd column represents the BLOB one): 1,1,"4Vÿ" 2,1,"ª»Ì" 3,1,"Ýîÿ" 4,1,"\"3" and the import works fine for this case with the following sql statement: LOAD DATA INFILE

Azure Blob: “The condition specified using HTTP conditional header(s) is not met”

由 橙三吉。 提交于 2020-01-10 03:48:05
问题 I got this exception when I run my application. It happens also in the real Azure blob storage. I've caught with Fiddler the request that creates this problem: GET http://127.0.0.1:10000/devstoreaccount1/ebb413ed-fdb5-49f2-a5ac-74faa7e2d3bf/8844c3ec-9e4b-43ec-88b2-58eddf65fc0a/perro?timeout=90 HTTP/1.1 x-ms-version: 2009-09-19 User-Agent: WA-Storage/6.0.6002.18006 x-ms-range: bytes=0-524304 If-Match: 0x8CDA190BD304DD0 x-ms-date: Wed, 23 Feb 2011 16:49:18 GMT Authorization: SharedKey

Saving desktopCapturer to video file from Electron app

由 梦想的初衷 提交于 2020-01-10 03:28:44
问题 Basing on electron api and this question I'm trying to save recorded user screen to .webm file in videos folder in root app folder. Actually it's almost working because it save .webm file but the file which is saved is empty, it weigh 0B.. I don't know what I'm missing here. So it looks like it's somehow not recording correctly because file is empty.. edit when debbuging I discovered that recording is probably working correctly because blobs which I console log has value inside, after

Mybatis自定义typeHandlers

由 早过忘川 提交于 2020-01-10 01:52:30
类型处理器（typeHandlers）： MyBatis 在预处理语句（PreparedStatement）中设置一个参数时，还是从结果集中取出一个值时， 都会用类型处理器将获取的值以合适的方式转换成 Java 类型。Mybatis有默认的类型处理器，但是如果我们重新配置了，将会覆盖对应的类型处理器 具体实现如下： 1.创建处理器类，实现 org.apache.ibatis.type.TypeHandler 接口，或者继承 org.apache.ibatis.type.BaseTypeHandler， 然后可以选择性地将它映射到一个 JDBC 类型。 package com . jym . util ; import org . apache . ibatis . type . BaseTypeHandler ; import org . apache . ibatis . type . JdbcType ; import org . apache . ibatis . type . MappedJdbcTypes ; import java . io . ByteArrayInputStream ; import java . io . InputStream ; import java . sql . * ; // MappedJdbcTypes注解，设置处理的数据库类型

Use of BLOB type column in Oracle APEX

由 百般思念 提交于 2020-01-09 10:55:46
问题 I am using a table having a BLOB column used to store a user's resume (it can be a word document, a pdf file or any other binary format). Now in Oracle Apex 4.2, when I create a form on this table, I automatically get a browse button for selecting a file for the BLOB column. I can browse through files and select a file and then I press another button (also provided automatically) to upload the file. Now if I see this record in SQL Developer or Pl/SQL developer, I see that the BLOB data is

Use of BLOB type column in Oracle APEX

由 徘徊边缘 提交于 2020-01-09 10:55:10
问题 I am using a table having a BLOB column used to store a user's resume (it can be a word document, a pdf file or any other binary format). Now in Oracle Apex 4.2, when I create a form on this table, I automatically get a browse button for selecting a file for the BLOB column. I can browse through files and select a file and then I press another button (also provided automatically) to upload the file. Now if I see this record in SQL Developer or Pl/SQL developer, I see that the BLOB data is

vue、koa 导入导出excel文件

由 亡梦爱人 提交于 2020-01-08 04:05:35
一、使用node-xlsx、koa-multer插件 　　 npm install node-xlsx koa-multer mockjs --save 二、excel 文件导出 　　 1、前端请求数据，通过blob（Blob对象可以看做是存放二进制数据的容器）解析数据，下载对应的文件 1 exportExcel(e){ 2 axios({ 3 method : "get", 4 url : "/api/exportexcel", 5 responseType: 'blob' 6 }).then(async (res) => { 7 let uploadExcel = (fileName) => { 8 const blob = new Blob([res], {type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8'}); 9 const url = URL.createObjectURL(blob); 10 const aLink = document.createElement('a'); 11 aLink.setAttribute('download',fileName); 12 aLink.setAttribute('href',url); 13

下载html为doc文件

由 笑着哭i 提交于 2020-01-07 17:57:04
方法一： 使用jquery.wordexport.js和FileSaver.js jquery.wordexport.js源码 if (typeof jQuery !== "undefined" && typeof saveAs !== "undefined") { (function ($) { $.fn.wordExport = function (fileName) { fileName = typeof fileName !== 'undefined' ? fileName : "jQuery-Word-Export"; var statics = { mhtml: { top: "Mime-Version: 1.0\nContent-Base: " + location.href + "\nContent-Type: Multipart/related; boundary=\"NEXT.ITEM-BOUNDARY\";type=\"text/html\"\n\n--NEXT.ITEM-BOUNDARY\nContent-Type: text/html; charset=\"utf-8\"\nContent-Location: " + location.href + "\n\n<!DOCTYPE html>\n<html>\n_html_</html>", head: "

creating a random blob in jdbc and writing it to oracle

由 微笑、不失礼 提交于 2020-01-07 04:41:35
问题 I want to create many blobs in java [in memory] and write it to Oracle table. What I want is the blob[bits inside it] to be random or sudo random so that oracle would not be able to do a lot of pre-optimization while storing the blob to the table. Something like for(1..1000000) { blob = createRandomBlob(sizeOfBlob); sqlText ="INSERT INTO test_blob (id, blob) VALUES(i, blob)"; stmt.executeUpdate(sqlText); } Can someone point what JAVA APIs I can use to create such blob[in memory rather than on
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