graphic poi

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

Use POI to create a simple Myxls.xls fileThe usual package is org.apache.poi.hssf.usermodel.*;Example:Import java.io.*;Import org.apache.poi.hssf.usermodel.*;public class Zoomsheet {Public Zoomsheet () {}public static void Main (String args[])Throws IOException {Hssfworkbook wb = new Hssfworkbook ();Hssfsheet Sheet1 = wb.createsheet ("new sheet");FileOutputStream fileout = new FileOutputStream ("Workbook.xls");Wb.write (fileout);Fileout.close ();}}Cla

Java uses POI to import data from a database into Excel Effect: Use the first POI package into the project path, note that only need to import POI package can be downloaded after three jar package Core code: Connection database: Dbconnection.java Copy Code code as follows: Package org.xg.db; Import java.sql.Connection; Import Java.sql.Driver

The Apache poi is a free, Open-source Java API Written in Java that provides the ability to read and write to Microsoft Office format files. The official download address for the Apache POI Source and library (jar package) is: http://poi.apache.org/download.html I also provided a download address: http://download.csdn.net/detail/gaojinshan/7487253 It is the latest version (

Process Description: The POI object includes a partial base color, which is used in the form Hssfcellstyle Styleheader = Wb.createcellstyle ()//Create a cell's style //Background color setting style.setfillbackgroundcolor ( HSSFColor.GREEN.index); Among them, HSSFColor.GREEN.index is the color that poi comes with. Our idea is to modify POI's own color, configure its RGB to the color we want

Monitor reports export Excel summary based on POI Poi manipulating Excel objects HSSF: Manipulating Excel (. xls) format XSSF: Manipulating Excel 2007 OOXML (. xlsx) format to manipulate Excel memory usage above HSSF SXSSF: Support from POI3.8 Beta3, based on XSSF, low memory footprint. 1. Principle of realization Based on the Excel configuration template for report export, to achieve the export of Excel

Using tools:JQuery Ocupload Jquery.ocupload-1.1.2.jsApache POI Poi-3.9.jarIf you are using Maven:Jsp:enctype= "Multipart/form-data " method= "POST" >Js:　function Uploadexcle () {var file = $ ("#file"). Val ();if (' = = File ') {Alert ("Please select File");Return}var fileType = (file.substring (File.lastindexof (".") + 1, file.length)). toLowerCase ();if (fileType!== ' xls ' fileType!== ' xlsx ') {Alert ('

This function description, click on the Download button on the front page, start to download the required data, as follows:Google Chrome works as follows:Open Excel as follows:The Firefox browser works as follows:First to import the POI jar package, my project uses MAVEN management, so add is relatively simple, the following codeFind the project's Pom.xml file to join in Dependency> groupId>Org.apache.poigroupId> Artifactid>PoiArtifactid> ver

Java Solution for POI export Excel memory OverflowIn our use of Java development process, we often want to export the data obtained by the query, which is generally stored in Excel, so we export the data to use the Java POI Library, which is mainly for the various Windows Platform data format operation, here, We are working on Excel.The process of generating Excel is like this, first of all, we query the da

1. First download the Poi-3.6-20091214.jar, as follows:http://download.csdn.net/detail/evangel_z/38950512.student.javaImport Java.util.Date;public class Student{private int id;private String name;private int age;Private Date birth;Public Student (){}public Student (int ID, String name, Int. age, Date birth){This.id = ID;THIS.name = name;This.age = age;This.birth = birth;}public int getId (){return ID;}public void setId (int id){This.id = ID;}Public St

When you use a POI to update Excel, if cell a sets a formula, and when the other cells it depends on are populated with values, a in the exported Excel is still a formula instead of an auto-calculated value.Paste_image.pngThe score subtotal is not updated to the calculated results.WorkaroundThis interface is provided in the POI to org.apache.poi.ss.usermodel.FormulaEvaluator enable updates to the formula. W