java读取excel文件

package com.execl;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import org.apache.poi.hssf.usermodel.HSSFCell;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;/** * * @描述：测试excel读取 * * 导入的jar包 * * poi-3.8-beta3-20110606.jar * * poi-ooxml-3.8-beta3-20110606.jar * * poi-examples-3.8-beta3-20110606.jar * * poi-excelant-3.8-beta3-20110606.jar * * poi-ooxml-schemas-3.8-beta3-20110606.jar * * poi-scratchpad-3.8-beta3-20110606.jar * * xmlbeans-2.3.0.jar * * dom4j-1.6.1.jar * * jar包官网下载地址：http://poi.apache.org/download.html * * 下载poi-bin-3.8-beta3-20110606.zipp * */public class ImportExecl { /** 总行数 */ ; /** 总列数 */ ; /** 错误信息 */ private String errorInfo; /** 构造方法 */ public ImportExecl() { } public int getTotalRows() { return totalRows; } public int getTotalCells() { return totalCells; } public String getErrorInfo() { return errorInfo; } 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; } public List<List<String>> read(String filePath) { List<List<String>> dataLst = new ArrayList<List<String>>(); 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; } public List<List<String>> read(InputStream inputStream, boolean isExcel2003) { List<List<String>> 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; } private List<List<String>> read(Workbook wb) { List<List<String>> dataLst = new ArrayList<List<String>>(); /** 得到第一个shell */ Sheet sheet = wb.getSheetAt(); /** 得到Excel的行数 */ this.totalRows = sheet.getPhysicalNumberOfRows(); /** 得到Excel的列数 */ && sheet.getRow() != null) { ).getPhysicalNumberOfCells(); } /** 循环Excel的行 */ ; r < this.totalRows; r++) { Row row = sheet.getRow(r); if (row == null) { continue; } List<String> rowLst = new ArrayList<String>(); /** 循环Excel的列 */ ; c < this.getTotalCells(); c++) { Cell cell = row.getCell(c); String cellValue = ""; if (null != cell) { // 以下是判断数据的类型 switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_NUMERIC: // 数字 cellValue = cell.getNumericCellValue() + ""; break; case HSSFCell.CELL_TYPE_STRING: // 字符串 cellValue = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean cellValue = cell.getBooleanCellValue() + ""; break; case HSSFCell.CELL_TYPE_FORMULA: // 公式 cellValue = cell.getCellFormula() + ""; break; case HSSFCell.CELL_TYPE_BLANK: // 空值 cellValue = ""; break; case HSSFCell.CELL_TYPE_ERROR: // 故障 cellValue = "非法字符"; break; default: cellValue = "未知类型"; break; } } rowLst.add(cellValue); } /** 保存第r行的第c列 */ dataLst.add(rowLst); } return dataLst; } public static void main(String[] args) throws Exception { ImportExecl poi = new ImportExecl(); // List<List<String>> list = poi.read("d:/aaa.xls"); List<List<String>> list = poi.read("D:\\Users\\test.xlsx"); if (list != null) { ; i < list.size(); i++) { System.out.print("第" + (i) + "行"); List<String> cellList = list.get(i); ; j < cellList.size(); j++) { // System.out.print(" 第" + (j + 1) + "列值："); System.out.print(" " + cellList.get(j)); } System.out.println(); } } }}class WDWUtil { public static boolean isExcel2003(String filePath) { return filePath.matches("^.+\\.(?i)(xls)$"); } public static boolean isExcel2007(String filePath) { return filePath.matches("^.+\\.(?i)(xlsx)$"); }}