package com.yq1012.Excel; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.LinkedList; import java.util.List; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * 利用开源组件POI3.0.2动态导出EXCEL文档 转载时请保留以下信息,注明出处! */ public class ReadExcel { /** * 对外提供读取excel 的方法 * */ public static List<List<Object>> readExcel(File file) throws IOException { String fileName = file.getName(); String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName .substring(fileName.lastIndexOf(".") + 1); if ("xls".equals(extension)) { return read2003Excel(file); } else if ("xlsx".equals(extension)) { return read2007Excel(file); } else { throw new IOException("不支持的文件类型"); } } /** * 读取 office 2003 excel * @throws IOException * @throws FileNotFoundException */ private static List<List<Object>> read2003Excel(File file) throws IOException { List<List<Object>> list = new LinkedList<List<Object>>(); HSSFWorkbook hwb = new HSSFWorkbook(new FileInputStream(file)); HSSFSheet sheet = hwb.getSheetAt(0); Object value = null; HSSFRow row = null; HSSFCell cell = null; int counter = 0; for (int i = sheet.getFirstRowNum(); counter < sheet .getPhysicalNumberOfRows(); i++) { row = sheet.getRow(i); if (row == null) { continue; } else { counter++; } List<Object> linked = new LinkedList<Object>(); for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) { cell = row.getCell(j); if (cell == null) { continue; } DecimalFormat df = new DecimalFormat("0");// 格式化 number String 字符 SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss");// 格式化日期字符串 DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字 switch (cell.getCellType()) { case XSSFCell.CELL_TYPE_STRING: // System.out.println(i + "行" + j + " 列 is String type"); value = cell.getStringCellValue(); break; case XSSFCell.CELL_TYPE_NUMERIC: // System.out.println(i + "行" + j // + " 列 is Number type ; DateFormt:" // + cell.getCellStyle().getDataFormatString()); if ("@".equals(cell.getCellStyle().getDataFormatString())) { value = df.format(cell.getNumericCellValue()); } else if ("General".equals(cell.getCellStyle() .getDataFormatString())) { value = nf.format(cell.getNumericCellValue()); } else { value = sdf.format(HSSFDateUtil.getJavaDate(cell .getNumericCellValue())); } break; case XSSFCell.CELL_TYPE_BOOLEAN: // System.out.println(i + "行" + j + " 列 is Boolean type"); value = cell.getBooleanCellValue(); break; case XSSFCell.CELL_TYPE_BLANK: // System.out.println(i + "行" + j + " 列 is Blank type"); value = ""; break; default: // System.out.println(i + "行" + j + " 列 is default type"); value = cell.toString(); } if (value == null || "".equals(value)) { continue; } linked.add(value); } list.add(linked); } return list; } /** * 读取Office 2007 excel * */ private static List<List<Object>> read2007Excel(File file) throws IOException { List<List<Object>> list = new LinkedList<List<Object>>(); // 构造 XSSFWorkbook 对象,strPath 传入文件路径 XSSFWorkbook xwb = new XSSFWorkbook(new FileInputStream(file)); // 读取第一章表格内容 XSSFSheet sheet = xwb.getSheetAt(0); Object value = null; XSSFRow row = null; XSSFCell cell = null; int counter = 0; for (int i = sheet.getFirstRowNum(); counter < sheet .getPhysicalNumberOfRows(); i++) { row = sheet.getRow(i); if (row == null) { continue; } else { counter++; } List<Object> linked = new LinkedList<Object>(); for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) { cell = row.getCell(j); if (cell == null) { continue; } DecimalFormat df = new DecimalFormat("0");// 格式化 number String 字符 SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss");// 格式化日期字符串 DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字 switch (cell.getCellType()) { case XSSFCell.CELL_TYPE_STRING: System.out.println(i + "行" + j + " 列 is String type"); value = cell.getStringCellValue(); break; case XSSFCell.CELL_TYPE_NUMERIC: System.out.println(i + "行" + j + " 列 is Number type ; DateFormt:" + cell.getCellStyle().getDataFormatString()); if ("@".equals(cell.getCellStyle().getDataFormatString())) { value = df.format(cell.getNumericCellValue()); } else if ("General".equals(cell.getCellStyle() .getDataFormatString())) { value = nf.format(cell.getNumericCellValue()); } else { value = sdf.format(HSSFDateUtil.getJavaDate(cell .getNumericCellValue())); } break; case XSSFCell.CELL_TYPE_BOOLEAN: System.out.println(i + "行" + j + " 列 is Boolean type"); value = cell.getBooleanCellValue(); break; case XSSFCell.CELL_TYPE_BLANK: System.out.println(i + "行" + j + " 列 is Blank type"); value = ""; break; default: System.out.println(i + "行" + j + " 列 is default type"); value = cell.toString(); } if (value == null || "".equals(value)) { continue; } linked.add(value); } list.add(linked); } return list; } public static void main(String[] args) { try { // readExcel(new File("C:\\jialei.xlsx")); List<List<Object>> list = readExcel(new File("C:\\jialei.xls")); for (List<Object> list2 : list) { for (Object object : list2) { System.out.print(object.toString()+"i"); } System.out.println(""); } } catch (IOException e) { e.printStackTrace(); } } }