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POHow to add new sheets to existing excel workbook using apache POI and PrimeFaces
 

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    <p>I'm trying to create a new sheet in an existing excel workbook using apache POI using primefaces and java but have been unsuccessful so far. Can anyone please tell me how it is done? I am able to do it for single sheet </p> <p>The below code i have written for creating multiple sheets in one xls file, where i given the condition that it has no of rows greater than 65535 create new sheet and iterate it, but it is showing error</p> <p>WARNING: Invalid row number (65536) outside allowable range (0..65535) java.lang.IllegalArgumentException: Invalid row number (65536) outside allowable range (0..65535)</p> <p>My code is</p> <pre><code> public void postProcessXLS(Object document) { HSSFWorkbook wb = (HSSFWorkbook) document; HSSFSheet sheet = wb.getSheetAt(0); HSSFFont font = wb.createFont(); font.setFontName(HSSFFont.FONT_ARIAL); Iterator rowIterator = sheet.rowIterator(); HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setWrapText(false); cellStyle.setAlignment(HSSFCellStyle.ALIGN_GENERAL); cellStyle.setFont(font); System.out.println("Row number:"+sheet.getLastRowNum()); while (rowIterator.hasNext()) { System.out.println("Row number:"+sheet.getLastRowNum()); //sheet.rowIterator().next().getRowNum(); if(sheet.getLastRowNum() &gt;= 65535) { String sheetName = ""; for(int i=0;i&lt;searchResults.size();i++) { sheetName = "Document-" + i; HSSFSheet mySheet = wb.createSheet(sheetName); HSSFRow hssfRow = (HSSFRow) rowIterator.next(); Iterator iterator = hssfRow.cellIterator(); while (iterator.hasNext()) { HSSFCell hssfCell = (HSSFCell) iterator.next(); hssfCell.setCellStyle(cellStyle); } } } } } </code></pre> <p>and in my xhtml</p> <pre><code> &lt;h:commandLink&gt; &lt;p:graphicImage value="resources/images/excel.png" /&gt; &lt;p:dataExporter type="xls" target="nmeadata" postProcessor="#{decodeNMEAMessageAction.postProcessNmeaXLS}" fileName="decoded_all_nmeadata" /&gt; &lt;/h:commandLink&gt; &lt;h:commandLink&gt; &lt;p:graphicImage value="resources/images/excel.png" /&gt; &lt;p:dataExporter type="xls" target="nmeadata" postProcessor="#{decodeNMEAMessageAction.postProcessNmeaXLS}" fileName="decoded_page_nmeadata" pageOnly="true" /&gt; &lt;/h:commandLink&gt; </code></pre> <p><img src="https://i.stack.imgur.com/FY2VD.png" alt="Datatable which is imported to excel sheet"></p> <p>Is it possible to export data to multiple sheets using primefaces. Other wise please tell me how it can be done using servlets.</p>
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    1. COnot related to primefaces is it?
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    2. CO@user2310289 it is related to primefaces only
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