I am trying to use POI in a servlet to process an uploaded file as Excel file:
public static String readExcel(InputStream inp) { // InputStream inp = null; StringBuilder excelDataBuilder = new StringBuilder(); try { Workbook wb = WorkbookFactory.create(inp); Sheet sheet = wb.getSheetAt(0); Header header = sheet.getHeader(); int rowsCount = sheet.getLastRowNum(); for (int rowCounter = 0; rowCounter <= rowsCount; rowCounter++) { Row row = sheet.getRow(rowCounter); int colCounts = row.getLastCellNum(); for (int colCounter = 0; colCounter < colCounts; colCounter++) { Cell cell = row.getCell(colCounter); excelDataBuilder.append(cell.getStringCellValue()); if (colCounter < colCounts) excelDataBuilder.append(","); } if (rowCounter <= rowsCount) { excelDataBuilder.append("\n"); } } return excelDataBuilder.toString(); } catch (Exception ex) { LOG.error("Exception", ex); } finally { try { inp.close(); } catch (IOException ex) { LOG.error("IOException", ex); } } return excelDataBuilder.toString(); } However, it threw an exception at the following line:
Workbook wb = WorkbookFactory.create(inp); Here's the Stack Trace:
SEVERE: Servlet.service() for servlet [com.bhrt93.excel.servlet.UploadProcessExcel] in context with path [/ExcelServletProcessCommons] threw exception [Servlet execution threw an exception] with root cause java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlOptions at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) at org.apache.poi.POIXMLDocumentPart.<clinit>(POIXMLDocumentPart.java:59) at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:78) at com.bhrt93.excel.service.ExcelReaderService.readExcel(ExcelReaderService.java:22) at com.bhrt93.excel.servlet.UploadProcessExcel.doPost(UploadProcessExcel.java:69) at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) How is this caused and how can I solve it?
