convert file xlsx to xls

Processing of Excel import errors (xls, XLSX) Recently, the following problems were encountered during the process of creating a small function to import an Excel file to the datagriview: The link string of The Link Excel is written in this way. String strconnection = "provider = Microsoft. Jet. oledb.4.0; Data Source =" + strfilename + "; extended properties = E

-yyyymmdd.jar.② when we also want to use XLSX format, also import Poi-ooxml-version-yyyymmdd.jar.③ As for Poi-ooxml-schemas-version-yyyymmdd.jar, this jar is less likely to be used.④ we need to use Poi-scratchpad-version-yyyymmdd.jar when we need to manipulate word, PPT, viso, Outlook, and so on.Friendly tip jar Package: http://poi.apache.org/download.html4. About the difference in performance (reference: http://poi.apache.org/spreadsheet/index.html)I

classPoiutil {Private StaticLogger Logger = Logger.getlogger (poiutil.class); Private Final StaticString xls = "xls"; Private Final StaticString xlsx = "xlsx"; /*** read into Excel file and return after parsing *@paramfile *@throwsIOException*/ Public StaticListthrows

(), fileencoding = "", encoding = "Unknown", text, Skipnul = FALSE) 2. R Read CSV file Using R to read a CSV file is similar to reading a TXT file, using the Read.csv () method, where the use of the parameters is mostly the same. Read.csv ("/home/slave/test.csv", Header=t, Na.strings=c ("NA")) When reading the CSV

A few days ago in the project, there are imported Excel files, before there is a written ready-made import method, but the customer's request is able to import. xlsx files, but our method can only import. xls files. On the Internet to find some methods, no error in eclipse, but compile the error is not found files, and then download the latest jar from the POI website (3.13), import projects, again compiled

:{//determine if the cell is a date format if(dateutil.iscelldateformatted (cell)) {//Convert to date format Yyyy-mm-ddCellvalue =Cell.getdatecellvalue (); }Else{ //DigitalCellvalue =string.valueof (Cell.getnumericcellvalue ()); } Break; } Casecell.cell_type_string:{Cellvalue=Cell.getrichstringcellvalue (). getString (); Break; } default: Cellvalue= ""; } }Else{Cellvalue=

I previously wrote a PHP read the contents of a CSV fileOn the Code index.phpPHP/** * * @author XC **/ classexcel{ Public$currentSheet; Public$filePath; Public$fileType; Public$sheetIndex =0; Public$allColumn; Public$allRow; Publicfunction Initialized ($filePath) {if(File_exists ($filePath)) {$ This->filepath=$filePath; }Else{ returnArray (); } //cache as hard disk$cacheMethod =phpexcel_cachedobjectstoragefactory:: Cache_to_discisam; $cacheSettings=Array (); Phpex

use is very convenient. 　　Excel2003 Upgrade to Excel2007 method : Install Office Compatibility Pack 　　Open xlsx file Method two: Using NetEase online documentation Tool NetEase document view is a very powerful online file viewing tool, supporting a large number of files online, not only to support a variety of Office files online open, and also support graphi

[' Goods_amount_off ']; $row[' amount_off '] =$value[' Amount_off ']; $row[' brand_amount_off '] =$value[' Brand_amount_off ']; Echo implode("\ T",$row), "\ n";}Header(' Content-disposition:attachment; Filename= '.$filename);Header(' Accept-ranges:bytes ');Header(' Content-length: '.Ob_get_length());Header(' Content-type:application/vnd.ms-excel ');Ob_end_flush();2) Format selectionIf you need to export XLS, useHeader (' Content-type:application/vnd.m

encoding = readfileutils.get_charset (new file);if (Encoding.equalsignorecase ("GBK")) {Return fileutils.readfiletostring (new file, "GBK");} else {Return fileutils.readfiletostring (new file, "UTF8");}}private static String get_charset (file file) throws IOException {Strin