参考 所用jar包：
poi-3.11.jar
poi-ooxml-3.11.jar
poi-ooxml-schemas-3.11.jar
/* * Project: fusion-may-open-fusion-base * * File Created at 2018年4月28日 * * Copyright 2016 CMCC Corporation Limited. * All rights reserved. * * This software is the confidential and proprietary information of * ZYHY Company. ("Confidential Information"). You shall not * disclose such Confidential Information and shall use it only in * accordance with the terms of the license. */ package com.cmcc.open.ss.util; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFRichTextString; 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.hssf.util.CellRangeAddress; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DateUtil; 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; import com.cmcc.open.framework.utils.TimeUtil; /** * @Type ExcelHelper.java * @Desc 支持excel 03/07版本 * @author xxx * @date 2018年4月28日 上午11:20:49 * @version */ public class ExcelHelper { /** * 读取excel文件内容(适合 第一行为大标题，第二行是列名行) * @param f * @return */ public static List<List<Map<String, String>>> readExcelContent(File f, String fileName) { String fileType = fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length()); InputStream is = null; Workbook wb = null; List<List<Map<String, String>>> result = new ArrayList<List<Map<String, String>>>();//对应excel文件 try { is = new FileInputStream(f.getAbsoluteFile()); if (fileType.equals("xls")) { wb = new HSSFWorkbook(is); } else if (fileType.equals("xlsx")) { wb = new XSSFWorkbook(f.getAbsoluteFile()); } int sheetSize = wb.getNumberOfSheets(); for (int i = 0; i < sheetSize; i++) {//遍历sheet页 Sheet sheet = wb.getSheetAt(i); List<Map<String, String>> sheetList = new ArrayList<Map<String, String>>();//对应sheet页 List<String> titles = new ArrayList<String>();//放置所有的标题 int rowSize = sheet.getLastRowNum() + 1; for (int j = 0; j < rowSize; j++) {//遍历行 Row row = sheet.getRow(j); if (row == null) {//略过空行 continue; } if (j == 0) { continue;//第一行 大标题 } int cellSize = row.getLastCellNum();//行中有多少个单元格，也就是有多少列 if (j == 1) {//第二行 标题行 (列名行) for (int k = 0; k < cellSize; k++) { Cell cell = row.getCell(k); titles.add(cell.toString()); } } else {//其他行是数据行 Map<String, String> rowMap = new HashMap<String, String>();//对应一个数据行 for (int k = 0; k < titles.size(); k++) { Cell cell = row.getCell(k); String key = titles.get(k).trim(); String value = null; if (cell != null) { int cellType = cell.getCellType(); switch (cellType) { case Cell.CELL_TYPE_STRING: // 文本 value = cell.getRichStringCellValue().getString().trim(); break; case Cell.CELL_TYPE_NUMERIC: // 数字、日期 if (DateUtil.isCellDateFormatted(cell)) { value = TimeUtil.getFormatDateTime( cell.getDateCellValue(), TimeUtil.TIME_FORMAT2_24); } else { cell.setCellType(Cell.CELL_TYPE_STRING); value = String.valueOf(cell.getRichStringCellValue() .getString().trim()); } break; case Cell.CELL_TYPE_BOOLEAN: // 布尔型 value = String.valueOf(cell.getBooleanCellValue()); break; case Cell.CELL_TYPE_BLANK: // 空白 value = ""; // value = cell.getStringCellValue(); break; case Cell.CELL_TYPE_ERROR: // 错误 value = "错误#"; break; case Cell.CELL_TYPE_FORMULA: // 公式 // 得到对应单元格的公式 //cellValue = cell.getCellFormula() + "#"; // 得到对应单元格的字符串 cell.setCellType(Cell.CELL_TYPE_STRING); value = String .valueOf(cell.getRichStringCellValue().getString()); break; default: value = "#"; } // value = cell.toString().trim(); } rowMap.put(key, value); } sheetList.add(rowMap); } } result.add(sheetList); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (wb != null) { wb.close(); } if (is != null) { is.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } /** * * @param title 第一行 例如：码号模板xxx * @param header 标题行 * @param list 数据集合 */ public static HSSFWorkbook writeExcel(String title, String[] header, List<String[]> dataList) { HSSFWorkbook workbook = new HSSFWorkbook(); // 创建工作簿对象 try { HSSFSheet sheet = workbook.createSheet("Sheet1"); // 创建工作表 // 产生表格标题行 HSSFRow rowm = sheet.createRow(0); HSSFCell bigTitle = rowm.createCell(0); //sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面 - 可扩展】 HSSFCellStyle columnTopStyle = getColumnTopStyle(workbook);//获取列头样式对象 HSSFCellStyle style = getStyle(workbook); //单元格样式对象 sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, (header.length - 1))); bigTitle.setCellStyle(columnTopStyle); bigTitle.setCellValue(title); // 定义所需列数 int columnNum = header.length; HSSFRow rowRowName = sheet.createRow(1); // 在索引1的位置创建行(最顶端的行开始的第二行) // 将列头设置到sheet的单元格中 for (int n = 0; n < columnNum; n++) { HSSFCell cellRowName = rowRowName.createCell(n); //创建列头对应个数的单元格 cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING); //设置列头单元格的数据类型 HSSFRichTextString text = new HSSFRichTextString(header[n]); cellRowName.setCellValue(text); //设置列头单元格的值 // cellRowName.setCellStyle(columnTopStyle); //设置列头单元格样式 cellRowName.setCellStyle(style); //设置列头单元格样式 sheet.setColumnWidth(n, 18 * 256); //设置列宽 } //将查询出的数据设置到sheet对应的单元格中 for (int i = 0; i < dataList.size(); i++) { String[] strArr = dataList.get(i);//遍历每个对象 HSSFRow row = sheet.createRow(i + 2);//创建所需的行数 HSSFCell numCell = row.createCell(0, HSSFCell.CELL_TYPE_NUMERIC);//序号列 numCell.setCellValue(i + 1); numCell.setCellStyle(style); //设置单元格样式 for (int j = 0; j < strArr.length; j++) { HSSFCell cell = null; //设置单元格的数据类型 cell = row.createCell(j + 1, HSSFCell.CELL_TYPE_STRING); if (strArr[j] != null) { cell.setCellValue(strArr[j].toString()); //设置单元格的值 }else{ cell.setCellValue(""); //设置单元格的值 } cell.setCellStyle(style); //设置单元格样式 } } //让列宽随着导出的列长自动适应 /*for (int colNum = 0; colNum < columnNum; colNum++) { int columnWidth = sheet.getColumnWidth(colNum) / 256; for (int rowNum = 0; rowNum < sheet.getLastRowNum(); rowNum++) { HSSFRow currentRow; //当前行未被使用过 if (sheet.getRow(rowNum) == null) { currentRow = sheet.createRow(rowNum); } else { currentRow = sheet.getRow(rowNum); } if (currentRow.getCell(colNum) != null) { HSSFCell currentCell = currentRow.getCell(colNum); if (currentCell.getCellType() == HSSFCell.CELL_TYPE_STRING) { int length = currentCell.getStringCellValue().getBytes().length; if (columnWidth < length) { columnWidth = length; } } } } if (colNum == 0) { sheet.setColumnWidth(colNum, (columnWidth - 2) * 256); } else { sheet.setColumnWidth(colNum, (columnWidth + 4) * 256); } }*/ } catch (Exception e) { e.printStackTrace(); } return workbook; } /* * 列头单元格样式 */ public static HSSFCellStyle getColumnTopStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体大小 font.setFontHeightInPoints((short) 11); //字体加粗 font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //设置字体名字 font.setFontName("Courier New"); //设置样式; HSSFCellStyle style = workbook.createCellStyle(); //设置底边框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //设置底边框颜色; style.setBottomBorderColor(HSSFColor.BLACK.index); //设置左边框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //设置左边框颜色; style.setLeftBorderColor(HSSFColor.BLACK.index); //设置右边框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //设置右边框颜色; style.setRightBorderColor(HSSFColor.BLACK.index); //设置顶边框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //设置顶边框颜色; style.setTopBorderColor(HSSFColor.BLACK.index); //在样式用应用设置的字体; style.setFont(font); //设置自动换行; style.setWrapText(false); //设置水平对齐的样式为居中对齐; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //设置垂直对齐的样式为居中对齐; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } /* * 列数据信息单元格样式 */ public static HSSFCellStyle getStyle(HSSFWorkbook workbook) { // 设置字体 HSSFFont font = workbook.createFont(); //设置字体大小 //font.setFontHeightInPoints((short)10); //字体加粗 //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //设置字体名字 font.setFontName("Courier New"); //设置样式; HSSFCellStyle style = workbook.createCellStyle(); //设置底边框; style.setBorderBottom(HSSFCellStyle.BORDER_THIN); //设置底边框颜色; style.setBottomBorderColor(HSSFColor.BLACK.index); //设置左边框; style.setBorderLeft(HSSFCellStyle.BORDER_THIN); //设置左边框颜色; style.setLeftBorderColor(HSSFColor.BLACK.index); //设置右边框; style.setBorderRight(HSSFCellStyle.BORDER_THIN); //设置右边框颜色; style.setRightBorderColor(HSSFColor.BLACK.index); //设置顶边框; style.setBorderTop(HSSFCellStyle.BORDER_THIN); //设置顶边框颜色; style.setTopBorderColor(HSSFColor.BLACK.index); //在样式用应用设置的字体; style.setFont(font); //设置自动换行; style.setWrapText(false); //设置水平对齐的样式为居中对齐; style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //设置垂直对齐的样式为居中对齐; style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return style; } /** * 输出excel文件流 * @param response * @param fileName * @param workbook */ public static void exportExcel(HttpServletResponse response, String fileName, HSSFWorkbook workbook) { OutputStream out = null; try { response.setContentType("application/octet-stream"); response.setHeader("Content-disposition ", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8")); out = response.getOutputStream(); workbook.write(out); out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) { out.close(); } if (workbook != null) { workbook.close(); } } catch (Exception e2) { e2.printStackTrace(); } } } }