SSM POI---导出（含工具类）
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Controller
package com.jk.poiExcel.controller;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import com.jk.login.bean.TAtyUser;import com.jk.login.service.ILoginService;import com.jk.util.Const;import com.jk.util.ExportExcelUtils;@Controllerpublic class PoiExcelImportOrExport {@Autowiredprivate ILoginService loginServiceImpl;/** * <pre>exportExcel(生成单表execle) * 创建人： * 创建时间：2017年10月27日 下午4:12:43 * 修改人： * 修改时间：2017年10月27日 下午4:12:43 * 修改备注： * @param request * @return</pre> */@RequestMapping("exportExcel")@ResponseBodypublic Map<String, String> exportExcel(HttpServletRequest request){String title="用户信息表";//定义子工作表名称//type1--调用final自定义常量const的headtitil list已经加入了预定义的字段//List<String> headList =Const.headTitil;//type2--定义字段(也可以再定义一个实体类，通过循环add加入list)ArrayList<String> headList = new ArrayList<String>();headList.add("姓名");headList.add("登录名");headList.add("邮箱");headList.add("职务");List<TAtyUser> userList=loginServiceImpl.getAllUserList();//查询所有信息 Map<String, Object> excelMap = new HashMap<String, Object>(); excelMap.put("title", title); excelMap.put("head", headList); excelMap.put("data", userList); Map<String, String> map=new HashMap<String, String>(); try { map=ExportExcelUtils.UserXXToExcel(excelMap, "userxx2017.xls", request); System.err.println(map.get("url")+"===================");} catch (Exception e) {map.put("success", "fail");//ajax回调函数，用success的值判断是否弹框下载链接e.printStackTrace();}return map;}/** * <pre>exportExcel2017(生成多个子工作表execle) * 创建人： * 创建时间：2017年10月27日 下午4:13:00 * 修改人： * 修改时间：2017年10月27日 下午4:13:00 * 修改备注： * @param request * @return</pre> */@RequestMapping("exportExcel2017")@ResponseBodypublic Map<String, String> exportExcel2017(HttpServletRequest request){Map<String, String> map=new HashMap<String, String>();List<String> headList =Const.headTitil; List<TAtyUser> userList=loginServiceImpl.getAllUserList(); List<Map<String, Object>> listMap= new ArrayList<Map<String, Object>>(); HSSFWorkbook workbook = new HSSFWorkbook(); for (int i = 0; i < 3; i++) { Map<String, Object> dataMap = new HashMap<String, Object>(); String title="用户信息表"+i; dataMap.put("title", title); dataMap.put("headList", headList); dataMap.put("data", userList); listMap.add(dataMap);} try { map=ExportExcelUtils.exportUserInfo(listMap, request); System.out.println(map.get("url"));} catch (Exception e) {map.put("success", "fail");e.printStackTrace();}return map;}}Utilpackage com.jk.util;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.OutputStream;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.apache.commons.lang3.ObjectUtils;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;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.HSSFPalette;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.xssf.usermodel.XSSFWorkbook;import org.apache.xmlbeans.impl.jam.provider.ResourcePath;import com.jk.login.bean.TAtyUser;/** * ExportExcelUtils * @author rd * @version 1.0 * */public class ExportExcelUtils { /** 日志 */ private static final Log log = LogFactory.getLog(ExportExcelUtils.class); /** * @Title: exportExcel * @Description: 导出Excel的方法 * @author: evan @ 2017-08-01 * @param workbook * @param sheetNum (sheet的位置，0表示第一个表格中的第一个sheet) * @param sheetTitle （sheet的名称） * @param headers （表格的标题） * @param result （表格的数据） * @param out （输出流） * @throws Exception */ public static void exportExcel(HSSFWorkbook workbook, int sheetNum, String sheetTitle, List<Map<String, Object>> headers, List<Map<String, Object>> result, OutputStream out) throws Exception { // 生成一个表格 HSSFSheet sheet = workbook.createSheet(); workbook.setSheetName(sheetNum, sheetTitle); HSSFPalette customPalette = workbook.getCustomPalette(); customPalette.setColorAtIndex((short) 9, (byte) (0xff & 47), (byte) (0xff & 121), (byte) (0xff & 164)); customPalette.setColorAtIndex((short) 10, (byte) (0xff & 255), (byte) (0xff & 255), (byte) (0xff & 255)); // 设置表格默认列宽度为20个字节 sheet.setDefaultColumnWidth(20); // 生成一个样式 HSSFCellStyle style = workbook.createCellStyle(); // 设置这些样式 style.setFillForegroundColor((short) 9); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 生成一个字体 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.BLACK.index); font.setFontHeightInPoints((short) 14); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字体应用到当前的样式 style.setFont(font); // 指定当单元格内容显示不下时自动换行 style.setWrapText(true); // 产生表格标题行 HSSFRow row = sheet.createRow(0); row.setHeightInPoints(39); for (int i = 0; i < headers.size(); i++) { HSSFCell cell = row.createCell(i); Map<String, Object> filed = (Map<String, Object>) headers.get(i); String filedName = ObjectUtils.toString(filed.get("C_Name")); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(filedName); cell.setCellValue(text.toString()); } // 遍历集合数据，产生数据行 int index = 1; HSSFCellStyle styledata = workbook.createCellStyle(); HSSFFont fontdata = workbook.createFont(); fontdata.setColor(HSSFColor.BLACK.index); fontdata.setFontHeightInPoints((short) 12); // 指定当单元格内容显示不下时自动换行 styledata.setWrapText(true); styledata.setFont(fontdata); styledata.setFillForegroundColor((short) 10); styledata.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); styledata.setBorderBottom(HSSFCellStyle.BORDER_THIN); styledata.setBorderLeft(HSSFCellStyle.BORDER_THIN); styledata.setBorderRight(HSSFCellStyle.BORDER_THIN); styledata.setBorderTop(HSSFCellStyle.BORDER_THIN); styledata.setAlignment(HSSFCellStyle.ALIGN_CENTER); styledata.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); for (Map<String, Object> dataCell : result) { row = sheet.createRow(index); int cellIndex = 0; for (int i = 0; i < headers.size(); i++) { Map<String, Object> filed = (Map<String, Object>) headers .get(i); String filedId = ObjectUtils.toString(filed.get("C_Field")); HSSFCell cell = row.createCell(cellIndex); cell.setCellValue(ObjectUtils.toString(dataCell.get(filedId))); cell.setCellStyle(styledata); cellIndex++; } index++; } } /** * <pre>exportUserxxExcel(bean中取出属性，定义列中字段) * 创建人： * 创建时间：2017年10月27日 下午4:04:58 * 修改人： * 修改时间：2017年10月27日 下午4:04:58 * 修改备注： * @param workbook * @param sheetNum * @param sheetTitle * @param headers * @param result * @param out * @throws Exception</pre> */ public static void exportUserxxExcel(HSSFWorkbook workbook, int sheetNum, String sheetTitle, List<String> headers, List<TAtyUser> result, OutputStream out) throws Exception { // 生成一个表格 HSSFSheet sheet = workbook.createSheet(); workbook.setSheetName(sheetNum, sheetTitle); HSSFPalette customPalette = workbook.getCustomPalette(); customPalette.setColorAtIndex((short) 9, (byte) (0xff & 47), (byte) (0xff & 121), (byte) (0xff & 164)); customPalette.setColorAtIndex((short) 10, (byte) (0xff & 255), (byte) (0xff & 255), (byte) (0xff & 255)); // 设置表格默认列宽度为20个字节 sheet.setDefaultColumnWidth(20); // 生成一个样式 HSSFCellStyle style = workbook.createCellStyle(); // 设置这些样式 style.setFillForegroundColor((short) 9); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 生成一个字体 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.BLACK.index); font.setFontHeightInPoints((short) 14); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字体应用到当前的样式 style.setFont(font); // 指定当单元格内容显示不下时自动换行 style.setWrapText(true); // 产生表格标题行 HSSFRow row = sheet.createRow(0); row.setHeightInPoints(39); for (int i = 0; i < headers.size(); i++) { HSSFCell cell = row.createCell(i); String filedName = ObjectUtils.toString(headers.get(i)); cell.setCellStyle(style); HSSFRichTextString text = new HSSFRichTextString(filedName); cell.setCellValue(text.toString()); } // 遍历集合数据，产生数据行 int index = 1; HSSFCellStyle styledata = workbook.createCellStyle(); HSSFFont fontdata = workbook.createFont(); fontdata.setColor(HSSFColor.BLACK.index); fontdata.setFontHeightInPoints((short) 12); // 指定当单元格内容显示不下时自动换行 styledata.setWrapText(true); styledata.setFont(fontdata); styledata.setFillForegroundColor((short) 10); styledata.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); styledata.setBorderBottom(HSSFCellStyle.BORDER_THIN); styledata.setBorderLeft(HSSFCellStyle.BORDER_THIN); styledata.setBorderRight(HSSFCellStyle.BORDER_THIN); styledata.setBorderTop(HSSFCellStyle.BORDER_THIN); styledata.setAlignment(HSSFCellStyle.ALIGN_CENTER); styledata.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); //定义表头中要加入bean中的哪些字段 for (TAtyUser dataCell : result) { row = sheet.createRow(index); HSSFCell cell = row.createCell(0); cell.setCellValue(ObjectUtils.toString(dataCell.getcName())); cell.setCellStyle(styledata); HSSFCell cell2 = row.createCell(1); cell2.setCellValue(ObjectUtils.toString(dataCell.getcLoginid())); cell2.setCellStyle(styledata); HSSFCell cell3 = row.createCell(2); cell3.setCellValue(ObjectUtils.toString(dataCell.getcMail())); cell3.setCellStyle(styledata); HSSFCell cell4 = row.createCell(3); cell4.setCellValue(ObjectUtils.toString(dataCell.getcPassword())); cell4.setCellStyle(styledata); index++; } } /** * <pre>exportUserxx() * 创建人： * 创建时间：2017年10月27日 下午3:51:55 * 修改人： * 修改时间：2017年10月27日 下午3:51:55 * 修改备注： * @param workbook * @param sheetNum * @param sheetTitle * @param headers * @param result * @throws Exception</pre> */ public static void exportUserxx(HSSFWorkbook workbook, int sheetNum, String sheetTitle, List<String> headers, List<TAtyUser> result) throws Exception { // 生成一个表格 HSSFSheet sheet = workbook.createSheet(); workbook.setSheetName(sheetNum, sheetTitle); // 产生表格标题行 HSSFRow row = sheet.createRow(0); for (int i = 0; i < headers.size(); i++) { HSSFCell cell = row.createCell(i); cell.setCellValue(headers.get(i));} for (int i = 0; i < result.size(); i++){ TAtyUser user=result.get(i); HSSFRow rowdata = sheet.createRow(i+1); HSSFCell cell1=rowdata.createCell(0); cell1.setCellValue(user.getcName()); HSSFCell cell2=rowdata.createCell(1); cell2.setCellValue(user.getcLoginid()); HSSFCell cell3=rowdata.createCell(2); cell3.setCellValue(user.getcMail()); HSSFCell cell4=rowdata.createCell(3); cell4.setCellValue(user.getUserpost()); } } /** * 用于导出反馈结果页面的Excel * @param dataList 数据List * @param fileName 导出文件Excel * @return * @throws Exception */ @SuppressWarnings("unchecked") public static Map<String, String> fkqrToExcel( List<Map<String, Object>> dataList, String fileName, HttpServletRequest request) throws Exception { Map<String, String> resultMap = new HashMap<String, String>(); try { // String filePath = request.getSession().getServletContext().getRealPath("/fkjgExcel"); File tempDir = new File(filePath); if (!tempDir.exists()) { tempDir.mkdirs(); } OutputStream out = new FileOutputStream(filePath + fileName); HSSFWorkbook workbook = new HSSFWorkbook(); int i = 0; for (Map<String, Object> map : dataList) { String sheetName = ObjectUtils.toString(map.get("sheetName")); List<Map<String, Object>> data = (List<Map<String, Object>>) map .get("resdata"); List<Map<String, Object>> filedName = (List<Map<String, Object>>) map .get("lbFiled"); if (filedName != null && data != null) { exportExcel(workbook, i++, sheetName, filedName, data, out); } } if (i == 0) { HSSFSheet sheet = workbook.createSheet(); workbook.setSheetName(0, "暂无数据"); HSSFRow row = sheet.createRow(0); row.createCell(0); } workbook.write(out); out.close(); resultMap.put("success", "ok"); } catch (FileNotFoundException e) { log.error("ExportExcelUtils===生成EXCEL文件失败。"); resultMap.put("success", "fail"); } return resultMap; } /** * 用于导出反馈结果页面的Excel * @param dataList 数据List * @param fileName 导出文件Excel * @return * @throws Exception */ @SuppressWarnings("unchecked") public static Map<String, String> UserXXToExcel(Map<String, Object> dataMap, String fileName , HttpServletRequest request) throws Exception { Map<String, String> resultMap = new HashMap<String, String>(); String contextPath = request.getContextPath(); //获取项目的访问路径 http://localhost:8080/shixun05c/ String url=request.getScheme()+"://"+request.getServerName()+":"+ request.getServerPort()+contextPath+"/"; try { //生成Excel要存放的服务器路径 String filePath = request.getSession().getServletContext().getRealPath("/fkjgExcel");; File tempDir = new File(filePath); if (!tempDir.exists()) { tempDir.mkdirs(); } OutputStream out = new FileOutputStream(filePath +"\\"+ fileName); //这种声明方式只是导出.xls Excel文件工作簿 HSSFWorkbook workbook = new HSSFWorkbook(); //这种声明方式只是导出.xlsx Excel文件工作簿 //XSSFWorkbook workbookXl=new XSSFWorkbook(); String sheetName=(String) dataMap.get("title"); List<TAtyUser> data=(List<TAtyUser>) dataMap.get("data"); List<String> head=(List<String>) dataMap.get("head"); exportUserxxExcel(workbook, 0, sheetName, head, data, out); if (dataMap == null) { HSSFSheet sheet = workbook.createSheet(); workbook.setSheetName(0, "暂无数据"); HSSFRow row = sheet.createRow(0); row.createCell(0); } workbook.write(out); out.close(); resultMap.put("success", "ok"); resultMap.put("url",url+"/fkjgExcel/"+fileName); } catch (FileNotFoundException e) { log.error("ExportExcelUtils===生成EXCEL文件失败。"); resultMap.put("success", "fail"); } return resultMap; } /** * 用于查看详情页面的导出Excel * @param dataList 数据List * @param fileName 导出文件Excel * @return * @throws Exception */ @SuppressWarnings("unchecked") public static Map<String, String> ckxqToExcel( List<Map<String, Object>> dataList, String fileName, HttpServletRequest request) throws Exception { Map<String, String> resultMap = new HashMap<String, String>(); try { String filePath = request.getSession().getServletContext().getRealPath("/fkjgExcel"); File tempDir = new File(filePath); if (!tempDir.exists()) { tempDir.mkdirs(); } OutputStream out = new FileOutputStream(filePath + fileName); HSSFWorkbook workbook = new HSSFWorkbook(); Map<String, Object> styleMap = createStyle(workbook); HSSFSheet sheet = workbook.createSheet(); sheet.setDefaultColumnWidth(30); HSSFRow row = null; int rowNum = 0; if (dataList != null && dataList.size() != 0) { for (int dataC = 0; dataC < dataList.size(); dataC++) { Map<String, Object> dataMap = dataList.get(dataC); String title = ObjectUtils.toString(dataMap.get("title")); List<Map<String, Object>> tableData = (List<Map<String, Object>>) dataMap .get("data"); rowNum = exportExcelTitle(sheet, title, rowNum, styleMap, row); rowNum = exportExcelTableData(sheet, tableData, rowNum, styleMap, row); } } workbook.write(out); out.close(); } catch (Exception e) { } return resultMap; } /** * 将结果数据写入到EXCEL的表中 * @param sheet * @param data * @param rowNum * @param style * @param row * @return */ public static int exportExcelTableData(HSSFSheet sheet, List<Map<String, Object>> data, int rowNum, Map<String, Object> style, HSSFRow row) { HSSFCellStyle styleFCommon = (HSSFCellStyle) style.get("styleFCommon"); HSSFCellStyle styleDCommon = (HSSFCellStyle) style.get("styleDCommon"); int size = data.size(); int ys = size % 3; int zs = size / 3; int rowCount = 0; if (ys == 0) { rowCount = zs; } else { rowCount = zs + 1; } int cellCount = 0; for (int i = rowNum; i < rowNum + rowCount; i++) { row = sheet.createRow(i); row.setHeightInPoints(39); int cellIndex = 0; for (int dj = 0; dj < 3; dj++) { if (cellCount < size) { HSSFCell cellName = row.createCell(cellIndex); Map<String, Object> dataMap = data.get(cellCount); String name = ObjectUtils.toString(dataMap.get("name")); cellName.setCellValue(name); cellName.setCellStyle(styleFCommon); cellIndex++; HSSFCell cellvalue = row.createCell(cellIndex); String value = ObjectUtils.toString(dataMap.get("value")); cellvalue.setCellValue(value); cellvalue.setCellStyle(styleDCommon); cellIndex++; cellCount++; } else { break; } } } return rowNum + rowCount; } /** * 给每一个表单增加title * @param sheet * @param title * @param rowNum * @param style * @param row * @return */ @SuppressWarnings("deprecation") public static int exportExcelTitle(HSSFSheet sheet, String title, int rowNum, Map<String, Object> style, HSSFRow row) { // 产生表格标题行 HSSFCellStyle styleTitle = (HSSFCellStyle) style.get("styleTitle"); row = sheet.createRow(rowNum); row.setHeightInPoints(39); HSSFCell cell0 = row.createCell(0); row.createCell(1).setCellStyle(styleTitle); row.createCell(2).setCellStyle(styleTitle); row.createCell(3).setCellStyle(styleTitle); row.createCell(4).setCellStyle(styleTitle); row.createCell(5).setCellStyle(styleTitle); cell0.setCellValue(title); cell0.setCellStyle(styleTitle); sheet.addMergedRegion(new CellRangeAddress(rowNum, rowNum, 0, 5)); return rowNum + 1; } /** * 增加EXCEL展示所用的样式 * @param workbook * @return */ public static Map<String, Object> createStyle(HSSFWorkbook workbook) { Map<String, Object> resultMap = new HashMap<String, Object>(); HSSFPalette customPalette = workbook.getCustomPalette(); customPalette.setColorAtIndex((short) 9, (byte) (0xff & 67), (byte) (0xff & 146), (byte) (0xff & 217)); customPalette.setColorAtIndex((short) 10, (byte) (0xff & 240), (byte) (0xff & 245), (byte) (0xff & 247)); customPalette.setColorAtIndex((short) 11, (byte) (0xff & 251), (byte) (0xff & 252), (byte) (0xff & 253)); // 通用样式数据行生成一个样式 HSSFCellStyle styleFCommon = workbook.createCellStyle(); styleFCommon.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); styleFCommon.setFillForegroundColor((short) 10); styleFCommon.setBorderBottom(HSSFCellStyle.BORDER_THIN); styleFCommon.setBorderLeft(HSSFCellStyle.BORDER_THIN); styleFCommon.setBorderRight(HSSFCellStyle.BORDER_THIN); styleFCommon.setBorderTop(HSSFCellStyle.BORDER_THIN); styleFCommon.setAlignment(HSSFCellStyle.ALIGN_RIGHT); styleFCommon.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); styleFCommon.setWrapText(true); // 通用生成一个字体 HSSFFont fontCommon = workbook.createFont(); fontCommon.setFontHeightInPoints((short) 14); styleFCommon.setFont(fontCommon); resultMap.put("styleFCommon", styleFCommon); // 通用样式字段名称li生成一个样式 HSSFCellStyle styleDCommon = workbook.createCellStyle(); styleDCommon.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); styleDCommon.setFillForegroundColor((short) 11); styleDCommon.setBorderBottom(HSSFCellStyle.BORDER_THIN); styleDCommon.setBorderLeft(HSSFCellStyle.BORDER_THIN); styleDCommon.setBorderRight(HSSFCellStyle.BORDER_THIN); styleDCommon.setBorderTop(HSSFCellStyle.BORDER_THIN); styleDCommon.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); styleDCommon.setWrapText(true); styleDCommon.setFont(fontCommon); resultMap.put("styleDCommon", styleDCommon); // TITLE样式生成一个样式HSSFCellStyle.VERTICAL_CENTER HSSFCellStyle styleTitle = workbook.createCellStyle(); styleTitle.setFillForegroundColor((short) 9); styleTitle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); styleTitle.setBorderBottom(HSSFCellStyle.BORDER_THIN); styleTitle.setBorderLeft(HSSFCellStyle.BORDER_THIN); styleTitle.setBorderRight(HSSFCellStyle.BORDER_THIN); styleTitle.setBorderTop(HSSFCellStyle.BORDER_THIN); styleTitle.setWrapText(true); styleTitle.setAlignment(HSSFCellStyle.ALIGN_LEFT); styleTitle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // TILTEL通用生成一个字体 HSSFFont fontTiltl = workbook.createFont(); fontTiltl.setColor(HSSFColor.BLACK.index); fontTiltl.setFontHeightInPoints((short) 16); fontTiltl.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); styleTitle.setFont(fontTiltl); resultMap.put("styleTitle", styleTitle); return resultMap; } /** * 现在Excel * @param fileName * @return */ @SuppressWarnings({ "rawtypes", "unchecked" }) public static Object download(String fileName, HttpServletRequest request) { Map result = new HashMap(); try { String fileurl = request.getSession().getServletContext().getRealPath("/fkjgExcel"); byte[] fileData = null; FileInputStream fis = new FileInputStream(fileurl); fileData = new byte[fis.available()]; fis.read(fileData); result.put("name", fileName.replaceAll("\\s*", "")); result.put("data", fileData); fis.close(); } catch (Exception e) { log.error("文件下载失败！！"); } return result; } public static Map<String,String> exportUserInfo(List<Map<String,Object>> datamap, HttpServletRequest request ){ Map<String, String> resultMap = new HashMap<String, String>(); //项目名称 String contextPath = request.getContextPath(); //获取项目的访问路径 String url=request.getScheme()+"://"+request.getServerName()+":"+ request.getServerPort()+contextPath+"/"; try { //获取文件存放路径 String filePath = request.getSession().getServletContext().getRealPath("/fkjgExcel"); File tempDir = new File(filePath); if (!tempDir.exists()) { tempDir.mkdirs(); } OutputStream out = new FileOutputStream(filePath +"\\"+ "2017271026.xls"); //这种声明方式只是导出.xls Excel文件工作簿 HSSFWorkbook workbook = new HSSFWorkbook(); //这种声明方式只是导出.xlsx Excel文件 //XSSFWorkbook workbookXl=new XSSFWorkbook(); int i=0; for (Map<String, Object> map : datamap) { String sheetName=(String) map.get("title"); List<String> headList=(List<String>) map.get("headList"); List<TAtyUser> data= (List<TAtyUser>) map.get("data"); exportUserxx(workbook, i++, sheetName, headList, data); } workbook.write(out); out.close(); resultMap.put("success", "ok"); resultMap.put("url", url+"/fkjgExcel/"+"2017271026.xls"); }catch (FileNotFoundException e) { log.error("ExportExcelUtils===生成EXCEL文件失败。"); resultMap.put("success", "fail"); } catch (Exception e) {e.printStackTrace();} return resultMap; }}Service/Mapper只是查询了一个单表而已，就不上传了
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