例子：

结果：

开始：-----------------------------------

导入的poi

<!-- /artifact/org.apache.poi/poi --><dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.14</version></dependency><!-- /artifact/org.apache.poi/poi-ooxml --><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.14</version></dependency>

判断文件格式初始化

/*** 读取excel需求格式* @param filePath 路径* @return 返回*/public static Workbook readExcel(String filePath){Workbook wb = null;if(filePath==null){return null;}String extString = filePath.substring(filePath.lastIndexOf("."));InputStream is = null;try {is = new FileInputStream(filePath);if(".xls".equals(extString)){return wb = new HSSFWorkbook(is);}else if(".xlsx".equals(extString)){return wb = new XSSFWorkbook(is);}else{return wb = null;}} catch (Exception e) {error("readExcel--" + e.getMessage());}return wb;}

ExcelUtil完整代码（根据自己的需求进行修改，下面为我已经修改后的代码，代码我自己能够运行，如不能运行，请读一读改一改）

public class ExcelUtil {public static void main(String[] args){ExcelUtil excelUtil = new ExcelUtil();String[] columnNames = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21"};//读取excel数据ArrayList<Map<String,String>> result = excelUtil.readExcelToObj("sheet1",columnNames,"C:\\Users\\86182\\Desktop\\aa.xls");for(Map<String,String> map:result){System.out.println("输出："+map);}}/*** 读取excel需求格式* @param filePath 路径* @return 返回*/public static Workbook readExcel(String filePath){Workbook wb = null;if(filePath==null){return null;}String extString = filePath.substring(filePath.lastIndexOf("."));InputStream is = null;try {is = new FileInputStream(filePath);if(".xls".equals(extString)){return wb = new HSSFWorkbook(is);}else if(".xlsx".equals(extString)){return wb = new XSSFWorkbook(is);}else{return wb = null;}} catch (Exception e) {// error("readExcel--" + e.getMessage());}return wb;}/**---------------根据需要自己修改--------------------------------------------------------------------------------------------------------------* 读取excel数据* @param readExcel 传入*/public ArrayList<Map<String,String>> readExcelToObj(String name,Object[] columnNames, Workbook readExcel) {// Workbook wb = null;ArrayList<Map<String,String>> result = null;try {// wb = WorkbookFactory.create(new File(path));result = readExcel(readExcel, name, 0, 0,columnNames);} catch (Exception e) {e.printStackTrace();}return result;}public ArrayList<Map<String,String>> readExcelToObj(String name,Object[] columnNames, String path) {Workbook wb = null;ArrayList<Map<String,String>> result = null;try {wb = WorkbookFactory.create(new File(path));result = readExcel(wb, name, 0, 0,columnNames);} catch (Exception e) {e.printStackTrace();}return result;}//-----------------------------------------------------------------------------------------------------------------------------/*** 读取excel文件* @param wb* @param sheetIndex sheet页下标：从0开始* @param startReadLine 开始读取的行:从0开始* @param tailLine 去除最后读取的行*/private ArrayList<Map<String,String>> readExcel(Workbook wb,String sheetIndex, int startReadLine, int tailLine,Object[] columnNames) {// Sheet sheet = wb.getSheetAt(sheetIndex);Sheet sheet = wb.getSheet(sheetIndex);Row row = null;ArrayList<Map<String,String>> result = new ArrayList<Map<String,String>>();for(int i=startReadLine; i<sheet.getLastRowNum()-tailLine+1; i++) {row = sheet.getRow(i);Map<String,String> map = new HashMap<String,String>();for(Cell c : row) {//全部按照字符串类型来读取c.setCellType(Cell.CELL_TYPE_STRING);String returnStr = "";boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());//判断是否具有合并单元格if(isMerge) {String rs = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());//System.out.print(rs + "------ ");returnStr = rs;}else {//System.out.print(c.getRichStringCellValue()+"++++ ");//c.setCellType(Cell.CELL_TYPE_STRING);//returnStr = c.getRichStringCellValue().getString();returnStr = c.getStringCellValue();}//赋值for (int i1 = 0; i1 < columnNames.length; i1++) {if (c.getColumnIndex() == i1){map.put(String.valueOf(columnNames[i1]),returnStr);}}/*if(c.getColumnIndex()==0){map.put(columnNames[0],returnStr);}else if(c.getColumnIndex()==1){map.put("base",returnStr);}else if(c.getColumnIndex()==2){map.put("siteName",returnStr);}else if(c.getColumnIndex()==3){map.put("articleName",returnStr);}else if(c.getColumnIndex()==4){map.put("mediaName",returnStr);}else if(c.getColumnIndex()==5){map.put("mediaUrl",returnStr);}else if(c.getColumnIndex()==6){map.put("newsSource",returnStr);}else if(c.getColumnIndex()==7){map.put("isRecord",returnStr);}else if(c.getColumnIndex()==8){map.put("recordTime",returnStr);}else if(c.getColumnIndex()==9){map.put("remark1",returnStr);}else if(c.getColumnIndex()==10){map.put("remark2",returnStr);}else if(c.getColumnIndex()==11){map.put("remark3",returnStr);}else if(c.getColumnIndex()==12){map.put("remark4",returnStr);}else if(c.getColumnIndex()==13){map.put("remark5",returnStr);}else if(c.getColumnIndex()==14){map.put("remark6",returnStr);}else if(c.getColumnIndex()==15){map.put("remark7",returnStr);}else if(c.getColumnIndex()==16){map.put("mediaUrl9",returnStr);}else if(c.getColumnIndex()==14){map.put("newsSource9",returnStr);}else if(c.getColumnIndex()==18){map.put("isRecord9",returnStr);}else if(c.getColumnIndex()==19){map.put("recordTime9",returnStr);}else if(c.getColumnIndex()==20){map.put("remark19",returnStr);}else if(c.getColumnIndex()==21){map.put("remark29",returnStr);}else if(c.getColumnIndex()==22){map.put("remark39",returnStr);}else if(c.getColumnIndex()==23){map.put("remark49",returnStr);}else if(c.getColumnIndex()==24){map.put("remark59",returnStr);}else if(c.getColumnIndex()==25){map.put("remark69",returnStr);}else if(c.getColumnIndex()==26){map.put("remark79",returnStr);}*/}result.add(map);}return result;}/*** 获取合并单元格的值* @param sheet* @param row* @param column* @return*/public String getMergedRegionValue(Sheet sheet ,int row , int column){int sheetMergeCount = sheet.getNumMergedRegions();for(int i = 0 ; i < sheetMergeCount ; i++){CellRangeAddress ca = sheet.getMergedRegion(i);int firstColumn = ca.getFirstColumn();int lastColumn = ca.getLastColumn();int firstRow = ca.getFirstRow();int lastRow = ca.getLastRow();if(row >= firstRow && row <= lastRow){if(column >= firstColumn && column <= lastColumn){Row fRow = sheet.getRow(firstRow);Cell fCell = fRow.getCell(firstColumn);return getCellValue(fCell) ;}}}return null ;}/*** 判断合并了行* @param sheet* @param row* @param column* @return*/private boolean isMergedRow(Sheet sheet,int row ,int column) {int sheetMergeCount = sheet.getNumMergedRegions();for (int i = 0; i < sheetMergeCount; i++) {CellRangeAddress range = sheet.getMergedRegion(i);int firstColumn = range.getFirstColumn();int lastColumn = range.getLastColumn();int firstRow = range.getFirstRow();int lastRow = range.getLastRow();if(row == firstRow && row == lastRow){if(column >= firstColumn && column <= lastColumn){return true;}}}return false;}/*** 判断指定的单元格是否是合并单元格* @param sheet* @param row 行下标* @param column 列下标* @return*/private boolean isMergedRegion(Sheet sheet,int row ,int column) {int sheetMergeCount = sheet.getNumMergedRegions();for (int i = 0; i < sheetMergeCount; i++) {CellRangeAddress range = sheet.getMergedRegion(i);int firstColumn = range.getFirstColumn();int lastColumn = range.getLastColumn();int firstRow = range.getFirstRow();int lastRow = range.getLastRow();if(row >= firstRow && row <= lastRow){if(column >= firstColumn && column <= lastColumn){return true;}}}return false;}/*** 判断sheet页中是否含有合并单元格* @param sheet* @return*/private boolean hasMerged(Sheet sheet) {return sheet.getNumMergedRegions() > 0 ? true : false;}/*** 合并单元格* @param sheet* @param firstRow 开始行* @param lastRow 结束行* @param firstCol 开始列* @param lastCol 结束列*/private void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));}/*** 获取单元格的值* @param cell* @return*/public String getCellValue(Cell cell){if(cell == null) return "";if(cell.getCellType() == Cell.CELL_TYPE_STRING){return cell.getStringCellValue();}else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){return String.valueOf(cell.getBooleanCellValue());}else if(cell.getCellType() == Cell.CELL_TYPE_FORMULA){return cell.getCellFormula() ;}else if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){return String.valueOf(cell.getNumericCellValue());}return "";}/*** 从excel读取内容*/public static void readContent(String fileName) {boolean isE = false; //判断是否是excel格式if(fileName.endsWith("xlsx"))isE = true;try {InputStream input = new FileInputStream(fileName); //建立输入流Workbook wb = null;//根据文件格式(或者)来初始化if(isE)wb = new XSSFWorkbook(input);elsewb = new HSSFWorkbook(input);Sheet sheet = wb.getSheetAt(0);//获得第一个表单Iterator<Row> rows = sheet.rowIterator(); //获得第一个表单的迭代器while (rows.hasNext()) {Row row = rows.next(); //获得行数据//System.out.println("Row #" + row.getRowNum()); //获得行号从0开始Iterator<Cell> cells = row.cellIterator(); //获得第一行的迭代器while (cells.hasNext()) {Cell cell = cells.next();System.out.println(cell.getStringCellValue());//System.out.println("Cell #" + cell.getColumnIndex());//switch (cell.getCellType()) { //根据cell中的类型来输出数据// case HSSFCell.CELL_TYPE_NUMERIC:// System.out.println(cell.getNumericCellValue());// break;// case HSSFCell.CELL_TYPE_STRING:// System.out.println(cell.getStringCellValue());// break;// case HSSFCell.CELL_TYPE_BOOLEAN:// System.out.println(cell.getBooleanCellValue());// break;// case HSSFCell.CELL_TYPE_FORMULA:// System.out.println(cell.getCellFormula());// break;// default:// System.out.println("unsuported sell type======="+cell.getCellType());// break;//}}}} catch (IOException ex) {ex.printStackTrace();}}}