apache-poi

问题 I am referencing the version 3.7 of the Apache POI and I am getting a "cannot be resolved" error when I do: import org.apache.poi.xssf.usermodel.XSSFWorkbook; Other import statements that reference POI DO NOT give me errors, such as: import org.apache.poi.ss.usermodel.*; Any ideas?? 回答1: For OOXML to work you need the POI-OOXML jar which is separately packaged from the POI jar. Download the POI-OOXML jar from the following location - http://repo1.maven.org/maven2/org/apache/poi/poi-ooxml/3.11

问题 I am getting the following exception while trying to write an .xlsx file using Apache POI: org.apache.xmlbeans.impl.values.XmlValueDisconnectedException It seems the problem is using the method write () second time. When working with a HSSFWorkbook of this problem does not arise. Here's the Code: public class SomeClass{ XSSFWorkbook workbook; public SomeClass() throws IOException{ File excelFile = new File("workbook.xlsx"); InputStream inp = new FileInputStream(excelFile); workbook = new

问题 I have a large .xlsx file (141 MB, containing 293413 lines with 62 columns each) I need to perform some operations within. I am having problems with loading this file ( OutOfMemoryError ), as POI has a large memory footprint on XSSF (xlsx) workbooks. This SO question is similar, and the solution presented is to increase the VM's allocated/maximum memory. It seems to work for that kind of file-size (9MB), but for me, it just simply doesn't work even if a allocate all available system memory.

问题 I have a large .xlsx file (141 MB, containing 293413 lines with 62 columns each) I need to perform some operations within. I am having problems with loading this file ( OutOfMemoryError ), as POI has a large memory footprint on XSSF (xlsx) workbooks. This SO question is similar, and the solution presented is to increase the VM's allocated/maximum memory. It seems to work for that kind of file-size (9MB), but for me, it just simply doesn't work even if a allocate all available system memory.

问题 I need how to convert doc to pdf file using itext. I am using the following code it is not working. i am using itext 2.1.7.jar. The following error is coming: Exception in thread "main" ExceptionConverter: java.io.IOException: The document has no pages.at com.lowagie.text.pdf.PdfPages.writePageTree(Unknown Source) at com.lowagie.text.pdf.PdfWriter.close(Unknown Source) at com.lowagie.text.pdf.PdfDocument.close(Unknown Source) at com.lowagie.text.Document.close(Unknown Source) Here's my source

问题 I want to insert new rows while writing in Excel sheet. Here is my code: public static void addValuesInWorkbook(String pathAndFileName, String sheetName, int rowNum, String valuesString,String delimeter) { if(pathAndFileName.length() > 0 && sheetName.length() > 0 && rowNum >= 0 && valuesString.length() > 0 && delimeter.length() > 0) { String[] colValues= null; if("|".equals(delimeter)) colValues = valuesString.split("\\|"); else colValues = valuesString.split(delimeter); int cellnum = 0;

问题 I want to generate different headers in first page and other pages in poi word, So I used XWPFHeaderFooterPolicy.FIRST and XWPFHeaderFooterPolicy.DEFAULT. when I using XWPFHeaderFooterPolicy.DEFAULT I can insert my header successfully, but when I change to XWPFHeaderFooterPolicy.FIRST, I cannot see there is a header in my first page, this is my code in below, what's wrong with it? thanks! XWPFHeader header = headerFooterPolicy.createHeader(XWPFHeaderFooterPolicy.FIRST); paragraph = header

问题 I have a doc file that contains text,images etc etc. Now I want to read that doc file and write those contents into pdf file. My DOC file and newly generated PDF file has to be same. I repeat, My DOC file contains ( "images as well as text" data ). If anyone have this code please help me out. Thank you so much for your time.. 回答1: You can use this code to get all the images from your document. HWPFDocument doc = new HWPFDocument(fs);// fs is the object of POIFSFileSystem Range range = doc

问题 I am trying to view word file in my editor pane I tried these lines import java.awt.Dimension; import java.awt.GridLayout; import java.io.File; import java.io.FileInputStream; import javax.swing.JEditorPane; import org.apache.poi.hwpf.HWPFDocument; import org.apache.poi.hwpf.extractor.WordExtractor; public class editorpane extends JEditorPane { public editorpane(File file) { try { FileInputStream fis = new FileInputStream(file.getAbsolutePath()); HWPFDocument hwpfd = new HWPFDocument(fis);

问题 I am using Apache Poi to read images from docx. Here is my code: enter code here public Image ReadImg(int imageid) throws IOException { XWPFDocument doc = new XWPFDocument(new FileInputStream("import.docx")); BufferedImage jpg = null; List<XWPFPictureData> pic = doc.getAllPictures(); XWPFPictureData pict = pic.get(imageid); String extract = pict.suggestFileExtension(); byte[] data = pict.getData(); //try to read image data using javax.imageio.* (JDK 1.4+) jpg = ImageIO.read(new