xls

How to programmatically sign a binary MS office document with Java?

由 我与影子孤独终老i 提交于 2020-12-27 07:16:24
问题 How can we digitally sign a legacy binary MS-Office document (doc, xls, ppt) in Apache POI, or any other open source library? The Open XML formats are covered at How to programatically sign an MS office XML document with Java? 回答1: I was able to sign .doc file by creating detached xml signature, then adding it under root directory using POIFSFileSystem, example is below : public class OfficeDocumentSigner2 { public static void main(String[] args) { signClassicOfficeDocuments(); } private

Merging multiple .xls files in R [duplicate]

由 北战南征 提交于 2020-12-13 04:14:34
问题 This question already has answers here : How to import multiple .csv files at once? (13 answers) How can I read multiple (excel) files into R? [duplicate] (1 answer) Closed last year . I am trying to merge a list of .xls files in google drive. I have now managed to create a list of all the files I need, but for some reason I still can't manage to merge them, this is the code I have so far: library(googledrive) inputfiles <- drive_ls(path = "Email It In", pattern = "*PDOL_dataexport", n_max =

Convert XLS file to CSV but error number cell

由 北城余情 提交于 2020-08-08 07:05:35
问题 The following code allows you to convert a file from an XLS to a CSV : static void ConvertExcelToCsv(string excelFile, string csvOutputFile, int worksheetNumber = 1) { //Checks if the two files required exist or not and then throws an exception. if (!File.Exists(excelFile)) throw new FileNotFoundException(excelFile); if (File.Exists(csvOutputFile)) { File.Delete(csvOutputFile); } // connection string var cnnStr = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended

Convert XLS file to CSV but error number cell

由 痞子三分冷 提交于 2020-08-08 07:04:42
问题 The following code allows you to convert a file from an XLS to a CSV : static void ConvertExcelToCsv(string excelFile, string csvOutputFile, int worksheetNumber = 1) { //Checks if the two files required exist or not and then throws an exception. if (!File.Exists(excelFile)) throw new FileNotFoundException(excelFile); if (File.Exists(csvOutputFile)) { File.Delete(csvOutputFile); } // connection string var cnnStr = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended

Invalid header signature when read any xls file

由 こ雲淡風輕ζ 提交于 2020-06-29 03:40:36
问题 When I try to read xls file using the code below, I always get error: org.apache.poi.poifs.filesystem.NotOLE2FileException: Invalid header signature; read 0x65572D2D2D2D2D2D, expected 0xE11AB1A1E011CFD0 - Your file appears not to be a valid OLE2 document. This is my code: public Result<List<IDto>> ReadExcelClassInfo2003(File file, Timestamp createTime, Timestamp updateTime, BigDecimal createBy, BigDecimal updateBy) { Result<List<IDto>> resultData = new Result<List<IDto>>(); Integer

export excel

由 半世苍凉 提交于 2020-04-13 17:11:08
【今日推荐】：为什么一到面试就懵逼！>>> You can install it via pip: $ pip install Flask-Excel or clone it and install it: $ git clone http://github.com/pyexcel/Flask-Excel.git $ cd Flask-Excel $ python setup.py install Installation of individual plugins , please refer to individual plugin page. For example, if you need xls file support, please install pyexcel-xls: $ pip install pyexcel-xls Setup In your application, you must import it before using it: from flask.ext import excel or: import flask.ext.excel Quick start A minimal application may look like this: from flask import Flask, request, jsonify from flask

创建和管理Excel文件的控件Spire.XLS for .NET

由 ╄→尐↘猪︶ㄣ 提交于 2020-04-07 06:03:16
Spire.XLS for .NET 控件是e-iceblue公司开发的一款支持对所有Excel格式类型文件进行操作的.NET 控件 。它适用于任何类型的应用程序比如ASP.NET Web应用程序或者Windows桌面应用程序。Spire.XLS for .NET允许 软件开发 人员创建和管理Excel，而不需要安装Microsoft Excel或者Microsoft Office Excel。Spire.XLS for .NET和微软公司无隶属关系，也没有授权，赞助关系。相比Microsoft，Spire.XLS for .NET对于开发人员来说是一个更好的选择 - 自动化，安全，稳定，可扩展性延伸，速度快，价格便宜和功能强大。 通过Spire.XLS for .NET，软件开发人员可以快速方便的查看，生成，读写以及自定义编辑Excel文件。Spire.XLS for .NET支持Excel 97-2003, Excel 2007 and Excel 2010。它还支持C#, VB.NET, ASP.NET和 ASP.NET MVC编程语言 作为一款专业，强大，方便易用的控件，Spire.XLS for .NET有一下主要功能： 新建Excel文件，编辑已有的Excel文件，多种保存Excel方式，设置Excel文件属性，文件打印设置，合并，拆分或者拷贝单元格

批量修改文件名称

由 不羁的心 提交于 2020-03-08 16:09:32
方法/步骤 1 在c盘建立一个文件夹，将下载的图片放置于该文件夹中，如下图所示。 2 鼠标左键点击，开始-》运行-》在对话框中输入字母"cmd"，进入dos模式 ，如下图所示。 在dos模式输入命令行"cd c:\pic"然后回车，再输入命令行"dir /b>rename.xls"，如下图所示，可将文件夹中的文件名在rename.xls文件中列出。 小贴士：有的时候，你的计算机正处于中文输入状态，为确保命令行能够打出来，你可以切换成英文大写状态。 随后用xls打开c:\pic文件夹中的rename.xls，你会发现文件名以全部罗列在A列中（你也可以用鼠标来调整文件名的顺序），你可以在B1列中输入1.jpg作为第一个文件文件名。 鼠标选中B1单元格，并在B1列的右下方，使鼠标光标变为+号时，拖动使所有jpg文件的右侧B列中都有文件名。再将A8单元格中没有用的文件名删除，如下图示。 鼠标选中C1单元格，并在编辑框中输入公式="ren "&A1&" "&B1，如下图所示。 继续用鼠标拖动C1单元格右下方的句柄，使剩余的C2-C7单元格填充如下图所示。 然后，鼠标选中C列，鼠标右键复制，如下图示。 在记事本中，粘贴刚才的命令行，如下图示。 鼠标点击菜单"文件"——"另存为"，输入文件名ren.bat，要注意下图所示红圈中的路径及扩展名选项。 打开c盘pic文件夹，鼠标双击ren

Pyexcel, how to save a dict to csv file with pyexcel?

由 。_饼干妹妹 提交于 2020-03-05 06:06:35
问题 This part of the topic is solved, see my last answer to this topic. I'm having trouble to save a dictionary using the pyexcel module. I instaled the pyxecel module with pip3 install pyexcel So I have a dictionary and I'm doing this: import pyexcel as pe myDict = {...} pe.save_as(dict = myDict, dest_file_name = "dest_file.xls") In my terminal, when I compile the code, it prints myDict but just after I have this: Otherwise unrecognized parameters were given. terminal output I look for a

Pyexcel, how to save a dict to csv file with pyexcel?

由 蹲街弑〆低调 提交于 2020-03-05 06:06:32
问题 This part of the topic is solved, see my last answer to this topic. I'm having trouble to save a dictionary using the pyexcel module. I instaled the pyxecel module with pip3 install pyexcel So I have a dictionary and I'm doing this: import pyexcel as pe myDict = {...} pe.save_as(dict = myDict, dest_file_name = "dest_file.xls") In my terminal, when I compile the code, it prints myDict but just after I have this: Otherwise unrecognized parameters were given. terminal output I look for a
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