poi读取Excel文件报异常

[走海角]

最近使用poi操作Excel时，在读取Excel到文件到文件流中时，抛出一下异常:
org.apache.poi.hssf.record.RecordFormatException: String record was supplied but formula record flag is not set
at org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate.<init>(FormulaRecordAggregate.java:51)
at org.apache.poi.hssf.record.aggregates.ValueRecordsAggregate.construct(ValueRecordsAggregate.java:159)
at org.apache.poi.hssf.record.aggregates.RowRecordsAggregate.<init>(RowRecordsAggregate.java:89)
at org.apache.poi.hssf.model.Sheet.createSheet(Sheet.java:219)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:281)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:196)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:313)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:294)
at com.nec.nes.eks.importEmployeeAttendance.service.ImportEmployeeAttendanceService.getEmployeeAttendanceFromXls(ImportEmployeeAttendanceService.java:164)
at com.nec.nes.eks.importEmployeeAttendance.action.ImportEmployeeAttendanceAction.uploadAnalyzeFile(ImportEmployeeAttendanceAction.java:167)
at com.nec.nes.eks.importEmployeeAttendance.action.ImportEmployeeAttendanceAction.exe(ImportEmployeeAttendanceAction.java:86)
at com.nec.nes.comn.core.action.BaseAction.execute(BaseAction.java:79)
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at com.nec.nes.comn.core.servlet.OurActionServlet.service(OurActionServlet.java:96)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Unknown Source)
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在网上搜了很长时间，没有找到正确答案，通过自己实践，找出原因。
在用poi读取Excel时，应保证Excel文件默认选中的是第一个sheet页，即异常中的提示：String record was supplied but formula record flag is not set

[wula0010]

找到原因，解决问题了么？

[LucEaspe]

// 最近写的。你参考下，不理解再问
package se.analyzer.parser.impl;

import java.io.File;
import java.io.FileInputStream;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import se.analyzer.parser.Parsable;
import se.analyzer.parser.Parser;

public class ExcelParser extends Parser implements Parsable {

	@Override
	public String getContext(File arg) {
		StringBuffer context = new StringBuffer();
		try {
			// 创建对Excel工作簿文件的引用
			HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(arg));
			// 获取sheet数
			int iSheetNum = workbook.getNumberOfSheets();
			for (int numSheets = 0; numSheets < iSheetNum; numSheets++) {
				if (null != workbook.getSheetAt(numSheets)) {
					// 获得一个sheet
					HSSFSheet aSheet = workbook.getSheetAt(numSheets);
					int iRowNum = aSheet.getLastRowNum();
					for (int rowNumOfSheet = 0; rowNumOfSheet <= iRowNum; rowNumOfSheet++) {
						if (null != aSheet.getRow(rowNumOfSheet)) {
							HSSFRow aRow = aSheet.getRow(rowNumOfSheet);

							int iCellNum = aRow.getLastCellNum();
							for (int cellNumOfRow = 0; cellNumOfRow < iCellNum; cellNumOfRow++) {

								if (null != aRow.getCell(cellNumOfRow)) {
									HSSFCell aCell = aRow.getCell(cellNumOfRow);

									int cellType = aCell.getCellType();
									switch (cellType) {
									case 0:// Numeric
										double sCell = aCell
												.getNumericCellValue();
										context.append(sCell);
										break;
									case 1:// String
										String strCell2 = aCell
												.getStringCellValue();
										context.append(strCell2);
										break;
									default:
										// other data
										String strCell3 = aCell
												.getStringCellValue();
										context.append(strCell3);
										break;
									}
								}
								context.append(" ");
							}
						}
						context.append("\n");
					}
				}
				context.append("\n");
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
		return context.toString();
	}

}