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vue 中excel导入导出功能实现

由 早过忘川 提交于 2019-12-08 08:22:04
1 安装依赖 npm install -S file-saver xlsx（这里其实安装了2个依赖） npm install -D script-loade 2 main.js全局引入Blob.js和Export2Excel.js import Blob from './excel/Blob.js' import Export2Excel from './excel/Export2Excel.js' 3 build目录下 webpack.base.conf.js配置 resolve: { extensions: ['.js', '.vue', '.json'], alias: { 'vue$': 'vue/dist/vue.esm.js', '@': resolve('src'), 'scss_vars': '@/styles/vars.scss', 'excel': path.resolve(__dirname, '../src/excel'),//新增加一行 } }, 4 主要代码 HTML: <el-button type="primary" class="checkBtn" style="position:relative;width:120px" @click="updata">导入Excel </el-button> <input id="input-file"

Storing songs on MySQL Database (BLOb support)

由 China☆狼群 提交于 2019-12-08 07:53:31
问题 I am trying to store songs and lyrics on MySQl db. I googled for examples how to do this,but no help.However,i am able to store images: con = DriverManager.getConnection(connectionURL, "root", ""); PreparedStatement ps = con.prepareStatement("INSERT INTO image VALUES(?,?)"); File file = new File("E://guitar.gif"); FileInputStream fs = new FileInputStream(file); ps.setInt(1,id); ps.setBinaryStream(2,fs,fs.available()); int i = ps.executeUpdate(); ps.close(); con.close(); //rest code Can anyone

Force download multiple blob files in php

由 时光总嘲笑我的痴心妄想 提交于 2019-12-08 07:04:37
问题 I want to add a method to my platform that allows users to download all the files from an application, that will be zipped-up. Each application consists of multiple files that are stored in separate rows of the files-table in the database. I tried many options, but just can't seem to add the actual files to the zip. This is my code so far: $sql = "SELECT * FROM files WHERE applications_id = :applications_id"; $stmt = $db->prepare($sql); $stmt->bindParam(':applications_id', $applications_id,

How to send an audio blob(data) file from javascript to java server(action)?

由 限于喜欢 提交于 2019-12-08 06:24:25
问题 We are using Struts2 Application wherein I want to send the recorded audio blob file which is in JavaScript, to Java Server (Action Class). I am using the following Ajax code to send the blob file. Javascript: var xhr=new XMLHttpRequest(); xhr.onload=function(e) { if(this.readyState === 4) { console.log("Server returned: ",e.target.responseText); } }; var fd=new FormData(); fd.append("filename.wav",blob); xhr.open("POST","getAudio",true); xhr.send(fd); My method in action class is getAudio()

Error while inserting blob data into sqlite on android

由 牧云@^-^@ 提交于 2019-12-08 05:45:54
问题 I want to store blob data into sqlite, It adds imageData as null although bloc has value. What should I put bloc value into sql? String x = getResultAsOnlyValue("soapImage", xdata); byte[] bloc = Base64.decode(x, Base64.DEFAULT); Bitmap bmp = BitmapFactory.decodeByteArray(bloc,0,bloc.length); SQLiteStatement statement = db.compileStatement("insert into ImageTable (imageData) values(?)"); statement.bindBlob(0, bloc); statement.execute(); 回答1: EDITED: ANSWER TO THE QUESTION String x =

How to HTTP POST a Blob to a different domain? [duplicate]

由 孤者浪人 提交于 2019-12-08 05:40:38
问题 This question already has answers here : How do I send a cross-domain POST request via JavaScript? (17 answers) Ways to circumvent the same-origin policy (11 answers) Closed 6 years ago . I have some Blob() object. I want to upload somewhere else (a website that handle user upload through forms). I can put them in a FormData and send them through an XMLHttpRequest object, but then I can't read the ajax response, because I'm blocked by the same origin policy of the ajax call. How can I get

Sending a PDF created dynamically as an attachment using PDFKit in a nodejs application

由 不羁岁月 提交于 2019-12-08 04:52:49
问题 I am trying to create a pdf dynamically using PDFkit and want to send it as an attachment in a email. Following this http://pdfkit.org/demo/browser.html example and this https://nodemailer.com/using-attachments/ documentation I wrote the following code: var doc = new PDFDocument(); var stream = doc.pipe(blobStream()); doc.text("Howdy!!"); doc.on('end'); stream.on('finish', function() { var htmlMailBody ='Hi' var textMailBody = 'hi'; var mailOptions = { from: 'ASD', // sender address to:

How do I convert jpg or png to blob on google app script?

由 一世执手 提交于 2019-12-08 04:13:20
问题 I want to http post an image from html form to google apps script web app, and then add that image to google drive. my apps script is below. function doPost(e){ var date = new Date(); var timestamp = date.toString() var adress = e.parameter.adress; var cost = e.parameter.cost; var item = e.parameter.item; var check = e.parameter.image; //add file to drive var destination_id = "some ID" var destination = DriveApp.getFolderById(destination_id); destination.createFile(check); }; when I execute,

How to convert an SQL Server BLOB string to System.Drawing.Image?

由 Deadly 提交于 2019-12-08 04:09:14
问题 How can I convert a BLOB represented as a string to a System.Drawing.Image type? Background I am going to import information about users together with their photo from a csv file using c#. The proprietary SDK that I use requires the photo to be a System.Drawing.Image Below is an example of the csv file. surname firstname photo Blogs Joe 0xFFD8FFE000104A46494600010101005F005F0000FFDB0043000D090A The photo field is actually 5k chars long and is a direct export of the BLOB field value in the sql

How to get all files from a directory in Azure BLOB using ListBlobsSegmentedAsync

由 匆匆过客 提交于 2019-12-08 03:30:55
问题 While trying to access all files of the Azure blob folder, getting sample code for container.ListBlobs(); however it looks like an old one. Old Code : container.ListBlobs(); New Code trying : container.ListBlobsSegmentedAsync(continuationToken); I am trying to use the below code : container.ListBlobsSegmentedAsync(continuationToken); Folders are like : Container/F1/file.json Container/F1/F2/file.json Container/F2/file.json Looking for the updated version to get all files from an Azure folder.
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