package lizikj.bigwheel.shop.util.excel; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.List; import lizikj.bigwheel.common.vo.agent.Agent; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class ReadExcelUtils { /** 总行数 */ private int totalRows = 0; /** 总列数 */ private int totalCells = 0; /** 错误信息 */ private String errorInfo; /** * 验证excel文件 * * @param filePath * @return */ public boolean validateExcel(String filePath) { /** 检查文件名是否为空或者是否是Excel格式的文件 */ if (filePath == null || !(WDWUtil.isExcel2003(filePath) || WDWUtil.isExcel2007(filePath))) { errorInfo = "文件名不是excel格式"; return false; } /** 检查文件是否存在 */ File file = new File(filePath); if (file == null || !file.exists()) { errorInfo = "文件不存在"; return false; } return true; } /** * 根据文件名读取excel文件 * * @param filePath * @return */ public List<Agent> read(String filePath) { List<Agent> dataLst = new ArrayList<Agent>(); InputStream is = null; try { /** 验证文件是否合法 */ if (!validateExcel(filePath)) { System.out.println(errorInfo); return null; } /** 判断文件的类型，是2003还是2007 */ boolean isExcel2003 = true; if (WDWUtil.isExcel2007(filePath)) { isExcel2003 = false; } /** 调用本类提供的根据流读取的方法 */ File file = new File(filePath); is = new FileInputStream(file); dataLst = read(is, isExcel2003); is.close(); } catch (Exception ex) { ex.printStackTrace(); } finally { if (is != null) { try { is.close(); } catch (IOException e) { is = null; e.printStackTrace(); } } } /** 返回最后读取的结果 */ return dataLst; } /** * 根据流读取Excel文件 * * @param inputStream * @param isExcel2003 * @return */ public List<Agent> read(InputStream inputStream, boolean isExcel2003) { List<Agent> dataLst = null; try { /** 根据版本选择创建Workbook的方式 */ Workbook wb = null; if (isExcel2003) { wb = new HSSFWorkbook(inputStream); } else { wb = new XSSFWorkbook(inputStream); } dataLst = read(wb); } catch (IOException e) { e.printStackTrace(); } return dataLst; } /** * 读取数据 * * @param wb * @return */ private List<Agent> read(Workbook wb) { List<Agent> dataLst = new ArrayList<Agent>(); /** 得到第一个shell */ Sheet sheet = wb.getSheetAt(0); /** 得到Excel的行数 */ this.totalRows = sheet.getPhysicalNumberOfRows(); /** 得到Excel的列数 */ if (this.totalRows >= 1 && sheet.getRow(0) != null) { this.totalCells = sheet.getRow(0).getPhysicalNumberOfCells(); } Agent agent = null; /** 循环Excel的行 */ for (int r = 1; r < this.totalRows; r++) { Row hssfRow = sheet.getRow(r); if (hssfRow == null) { continue; } agent = new Agent(); Cell name = hssfRow.getCell(0); Cell pname = hssfRow.getCell(1); Cell cname = hssfRow.getCell(2); Cell rname = hssfRow.getCell(3); Cell address = hssfRow.getCell(4); Cell contact = hssfRow.getCell(5); Cell mobile = hssfRow.getCell(6); Cell companyName = hssfRow.getCell(7); agent.setParentAgentId(0); agent.setAgentName(getValue(name)); agent.setAgentRole("K1"); agent.setProvinceId(getValue(pname)); agent.setCityId(getValue(cname)); agent.setRegionId(getValue(rname)); agent.setContact(getValue(contact)); agent.setAddress(getValue(address)); agent.setMobile(getValue(mobile)); agent.setContactName(getValue(contact)); agent.setCompanyName(getValue(companyName)); dataLst.add(agent); } return dataLst; } @SuppressWarnings("static-access") private String getValue(Cell hssfCell) { if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) { // 返回布尔类型的值 return String.valueOf(hssfCell.getBooleanCellValue()); } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) { // 返回数值类型的值 String result = ""; if (HSSFDateUtil.isCellDateFormatted(hssfCell)) {// 处理日期格式、时间格式 SimpleDateFormat sdf = null; if (hssfCell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) { sdf = new SimpleDateFormat("HH:mm"); } else {// 日期 sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); } Date date = hssfCell.getDateCellValue(); result = sdf.format(date); } else if (hssfCell.getCellStyle().getDataFormat() == 58) { // 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58) SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); double value = hssfCell.getNumericCellValue(); Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value); result = sdf.format(date); } else { double value = hssfCell.getNumericCellValue(); CellStyle style = hssfCell.getCellStyle(); DecimalFormat format = new DecimalFormat(); String temp = style.getDataFormatString(); // 单元格设置成常规 if (temp.equals("General")) { format.applyPattern("#"); } result = format.format(value); } return result; } else { // 返回字符串类型的值 return String.valueOf(hssfCell.getStringCellValue()); } } class WDWUtil { /** * 是否是2003的excel，返回true是2003 * @param filePath * @return */ public static boolean isExcel2003(String filePath) { return filePath.matches("^.+\.(?i)(xls)$"); } /** * 是否是2007的excel，返回true是2007 * @param filePath * @return */ public static boolean isExcel2007(String filePath) { return filePath.matches("^.+\.(?i)(xlsx)$"); } }
来自：http://blog.csdn.net/maxu12345/article/details/47977811
http://blog.csdn.net/mmm333zzz/article/details/7962377
http://www.cnblogs.com/hongten/p/java_poi_excel.html