poi library

Reading Excel data with POI: (version number: POI3.7) 1. Read Excel Private list 2, Excel data processing: The Excel store date and time are stored by numeric type, when reading POI first judge whether it is a numeric type, then make a judgment transformation 1, numerical format (cell_type_numeric): 1. Pure numerical format: Getnumericcellvalue () direct access to data 2. Date format: Deal with

Yesterday, the beta version of 3.5 was already supported by the 2007 Open XML Format (DOCX,PPTX,XLSX) for POI. Need to join Poi-ooxml-3.5-beta6-xxxx.jar. But the Poi-ooxml-3.5-beta6-xxxx.jar package requires several packages under the Ooxml-lib directory to run. The code is as follows Import java.util.ArrayList; Import Java.io.File; Import Java.io.FileInputStr

Http://www.cnblogs.com/hongten/p/java_poi_excel.htmlThis blog is an introduction to the POI technology in Java to read Excel data and then save it to MySQL data.You can also read and import excel in: Java's POI technology to learn how to write Excel informationUsing JXL technology, you can import excel in Java's JXL technologyProject structure:Test data in Excel:Database structure:The corresponding SQL:1 CR

npoi Edit Npoi is the. NET version of the POI project. Poi is an open source Java program that reads and writes Microsoft OLE2 component documents such as Excel, Word, and so on. Chinese name Npoi Advantage Traditional Operations Excel encounters problems Constitute Read and write OLE2 document

There are two ways to import Excel: JXL and POI1. JXL parsing Excelpublic class Jxlreadexcel {/*** JXL parsing Excel* @author David* @param args*/public static void Main (string[] args) {try {Create WorkbookWorkbook Workbook = Workbook.getworkbook (New File ("E:/students.xls"));Gets the first sheet of sheetSheet Sheet = workbook.getsheet (0);Get Datafor (int i = 0; i for (int j = 0; J Cell cell = Sheet.getcell (j,i);System.out.print (cell.getcontents () + "");}System.out.println ();}Workbook.clo

poi Create Excel file Create a suffix. xls Excel file @Test publicvoidtestcreateworkbook_xls () { HSSFWorkbookhssfWorkbook=new Hssfworkbook (); //Add worksheet (the XLS file generated when sheet is not added will error when opened) hssfsheetsheetone=hssfworkbook.createsheet (); hssfsheetsheettwo=hssfworkbook.createsheet () ;hssfsheetsheetthree= Hssfworkbook.createsheet ("three"); //Save as Excel file, xls suffix FileOutputStreamfileOu

Directory Overview Function How to use Reference Help OverviewThe source code consists of three items, Bmap.net, BMap.NET.WindowsForm, and BMap.NET.WinformDemo. Bmap.net For some packages of the Baidu map Web Service API, each interface returns a Jobject type (see Json.NET); BMap.NET.WindowsForm (began to write less a s, and then has not changed) Provides a series of controls that you can use in WinForm, including map display controls, naviga

POI Quick StartSeven steps required for POI development:1. Create a workbook Workbook objectWorkbook wb = new Hssfworkbook (); // It is the operation of the Excel 2003 version 2. Create a worksheet Sheet objectSheet Sheet = Wb.createsheet ();3. Create a Row objectRow Nrow = sheet.createrow (number of rows);4. Create a Cell objectCell NCell = Nrow.createcell (number of columns);5. Write content

When you read Excel content with a poi, you often encounter data formatting problems.For example: The number 12365 will change to 12365.0, the string number 123 will also become 123.0, and even be turned into a scientific notation. In addition, date formatting is also a headache. In fact, the most desirable way is what Excel is, that poi out of what is, do not engage in any conversion.After collecting vario

public class Exportexcelpublic void Exportexcel (collectionExportexcel ("Test POI Export Excel document", NULL, DataSet, out, "yyyy-mm-dd");}public static void Main (string[] args) {try {String path2 = "D://123.png";listUser U = new user ();U.setloginname (Qrcodeutil.getrnnumber () + "");U.setqrcodepath (path2);Bs.add (U); Bs.add (U); Bs.add (U); Bs.add (U);String Path = "e://";Export ExcelOutputStream out2 = new FileOutputStream (Path+qrcodeutil.getr

Console throws exception:Java.lang.IllegalStateException:Cannot get a text value from a numeric cellThe above error occurred when parsing an Excel file with POI in Java, indicating that the value of the text type cannot be obtained from a cell of a numeric type.When a POI operates Excel, the data cell has different types, and when we try to read a string from a number type cell and write to the database , c

Address: http://zhanqi.net/blog/287/ Test Environment Servlet/struts2 + poi 3.7 Supports exporting the excel2003/2007 format, and the exported file name supports Chinese characters without garbled characters. For more details, see the code and method annotations. For more information, see the poi download operation guide. /** * JSP/servlet + poi export Excel * *@

Poi is an API provided by Apache for processing files such as Excel. 1. Download the JAR File Http://poi.apache.org/download.html#POI-3.7 The current stable version is 3.7. Development and download in window:Poi-bin-3.7-20101029.zip 2. decompress the package. 3. Create a project under eclipse. Import the following JAR files to the project. Jar files in the root directory Jar files under the lib directory

Java poi export excel and poiexcel Jar of poi: http://poi.apache.org/ There will be a lot of jar after the download, but if it is just a simple excel report, you can import a poi-version-date. jar. Export Code: Private void outputExcel (String queryDate, String [] headers, List Well, append a mysql function to get the year and month. date_format(formatdate,'%Y-%

Getting started with POI POI Quick Start Seven steps required for POI development: 1. Create a WorkBook object Workbook wb = new HSSFWorkbook (); // It is used to operate excel 2003 2. Create a worksheet Sheet object Sheet sheet = wb. createSheet (); 3. Create a row object Row nRow = sheet. createRow (number of rows ); 4. Create a Cell Object Cell nCell = nRow.

When I read EXCEL from poi, I encountered the following common case: When you enter 1000 in a cell, poi needs to use getnumericcellvalue () to obtain the value, even though you set the cell to text in Excel. If you insist on using getstringcellvalue (), the following error is returned: Cannot get a text value from a numeric cell... When you use getnumericcellvalue () to obtain the value, you will find that

Yesterday, when I used poi to parse the Excel file, I found that if the Excel file is encrypted, that is, the Excel file is set to protected worksheet (tool --> Protection Work Sheet) the poi of apahce cannot parse the encrypted Excel file. However, if only one sheet in the encrypted Excel file (that is, the sheet protected by the Excel file is set to protected) can be parsed ~~~ In addition,

); } /*** Find the number of rows to insert and create a new POI Row Object *@paramsheet *@paramRowIndex *@return */ Privatexssfrow CreateRow (xssfsheet sheet, Integer rowIndex) {xssfrow row=NULL; if(Sheet.getrow (rowIndex)! =NULL) { intLastrowno =Sheet.getlastrownum (); Sheet.shiftrows (RowIndex, Lastrowno,1); } row=Sheet.createrow (RowIndex); returnRow; } /*** Create a row in which to enter the cell *@param

Problem occurs 1:Use POI to export Excel under Spring MVC Framework, set export file name: Response.setheader ("Content-disposition", "Attachment;filename=" +sourceid+ "_" + datestring+ ". xls");When this method is used to catch a package test, it shows that the bug URL is not valid.Workaround: String filenmae = Urlencoder.encode for "attachment;filename=" +sourceid+ "_" +datestring+ ". xls" ("attachment; Filename= "+sourceid+" _ "+datestring+". xls "

jar:http://poi.apache.org/of POI There will be a lot of jars after the download, but if it's just a simple Excel report, import a poi-version number-the date. Jar is ready. Export code: Privatevoidoutputexcel (stringquerydate,string[]headers, List Uh, add a MySQL function to get the date Date_format (formatdate, '%y-%m ') Finally, the point is that when the request is exported, the AJAX request cannot be us