spring+springmvc+hibernate利用poi实现导出Excel功能

转自：http://www.cnblogs.com/baizhanshi/p/5667751.html

1 主要相关jar包：http://pan.baidu.com/s/1bKLscQ 密码：y1yj
ooxml-schemas-1.3.jar
poi-3.14.jar
poi-ooxml-3.14.jar
xmlbeans-2.6.0.jar

2 主要工具类：ExportExcel

package cn.com.utils;import java.lang.reflect.Field;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.ss.usermodel.Cell;import org.apache.poi.ss.usermodel.CellStyle;import org.apache.poi.ss.usermodel.Font;import org.apache.poi.ss.usermodel.IndexedColors;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.XSSFSheet;import org.apache.poi.xssf.usermodel.XSSFWorkbook;/** * 导出Excel文档工具类 * * @author yanzi * @date 2017-9-19 */public class ExportExcel {  /**   * 创建excel文档，   *   * @param list        数据   * @param keys        list中map的key数组集合   * @param columnNames excel的列名 * @throws Exception    */  public static Workbook createWorkBook(List<?> lists, String[] keys, String columnNames[], Class<?> clazz) throws Exception {     List<Map<String, Object>> listMap = initData(lists, clazz);     // 创建excel工作簿    //Workbook wb = new HSSFWorkbook();    // 创建第一个sheet（页），并命名    //Sheet sheet = wb.createSheet(list.get(0).get("sheetName").toString());    XSSFWorkbook wb = new XSSFWorkbook();    XSSFSheet sheet= wb.createSheet(listMap.get(0).get("sheetName").toString());    // 手动设置列宽。第一个参数表示要为第几列设；，第二个参数表示列的宽度，n为列高的像素数。    for (int i = 0; i < keys.length; i++) {      sheet.setColumnWidth(i, (int)35.7 * 150);    }    // 创建第一行    Row row = sheet.createRow(0);    // 创建两种单元格格式    CellStyle cs = wb.createCellStyle();    CellStyle cs2 = wb.createCellStyle();    // 创建两种字体    Font f = wb.createFont();    Font f2 = wb.createFont();    // 创建第一种字体样式（用于列名）    f.setFontHeightInPoints((short) 10);    f.setColor(IndexedColors.BLACK.getIndex());    f.setBoldweight(Font.BOLDWEIGHT_BOLD);    // 创建第二种字体样式（用于值）    f2.setFontHeightInPoints((short) 10);    f2.setColor(IndexedColors.BLACK.getIndex());    // 设置第一种单元格的样式（用于列名）    cs.setFont(f);    cs.setBorderLeft(CellStyle.BORDER_THIN);    cs.setBorderRight(CellStyle.BORDER_THIN);    cs.setBorderTop(CellStyle.BORDER_THIN);    cs.setBorderBottom(CellStyle.BORDER_THIN);    cs.setAlignment(CellStyle.ALIGN_CENTER);    // 设置第二种单元格的样式（用于值）    cs2.setFont(f2);    cs2.setBorderLeft(CellStyle.BORDER_THIN);    cs2.setBorderRight(CellStyle.BORDER_THIN);    cs2.setBorderTop(CellStyle.BORDER_THIN);    cs2.setBorderBottom(CellStyle.BORDER_THIN);    cs2.setAlignment(CellStyle.ALIGN_CENTER);    //设置列名    for (int i = 0; i < columnNames.length; i++) {      Cell cell = row.createCell(i);      cell.setCellValue(columnNames[i]);      cell.setCellStyle(cs);    }    //设置每行每列的值    for (int i = 1; i < listMap.size(); i++) {      // Row 行,Cell 方格 , Row 和 Cell 都是从0开始计数的      // 创建一行，在页sheet上      Row row1 = sheet.createRow(i);      // 在row行上创建一个方格      for (int j = 0; j < keys.length; j++) {        Cell cell = row1.createCell(j);        cell.setCellValue(listMap.get(i).get(keys[j]) == null ? " " : listMap.get(i).get(keys[j]).toString());        cell.setCellStyle(cs2);      }    }    return wb;  }  /**   * 转换数据，把类型List<?> roomLists转化为List<Map<String, Object>>，   *   * @param list        原始数据   * @param clazz        反射类   * @param columnNames excel的列名   */  private static List<Map<String, Object>> initData(List<?> lists, Class<?> clazz) throws Exception {        List<Map<String, Object>> listmap = new ArrayList<Map<String, Object>>();        Map<String, Object> map = new HashMap<String, Object>();        map.put("sheetName", "sheet1");        listmap.add(map);        Object object;        Field[] fields = clazz.getDeclaredFields();        for (int j = 0; j < lists.size(); j++) {            object = lists.get(j);                  Map<String, Object> mapValue = new HashMap<>();          mapValue.put("no", j+1);          for (Field field : fields) {              field.setAccessible( true );                mapValue.put(field.getName(), field.get(object));          }          listmap.add(mapValue);        }        return listmap;      }}

3 Controller

// 处理请求@RequestMapping("room/export")    public String getRoomExportExcel2(String COName, String FullName, String Name, PageBean pageBean, HttpServletResponse response) throws Exception {        //填充list数据        SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");        String fileName = "导出房屋excel" + sf.format(new Date()) + ".xlsx";        // 获取数据来源        pageBean.setPageSize(101);        PageBean result = personRoomDao.getRoomList(pageBean, COName, FullName, Name);        List<RoomInfo> roomLists = result.getRows();        String columnNames[] = { "序号", "房间号", "所属地区","所属社区", "社区结构", "修改时间"};  ;//列名        String keys[] = {"no", "roomName", "regionName", "coName", "structName", "modifytime"};//map中的key        ByteArrayOutputStream os = new ByteArrayOutputStream();        try {        ExportExcel.createWorkBook(roomLists, keys, columnNames, RoomInfo.class).write(os);        } catch (IOException e) {          e.printStackTrace();        }        byte[] content = os.toByteArray();        InputStream is = new ByteArrayInputStream(content);        // 设置response参数，可以打开下载页面        response.reset();        response.setContentType("application/vnd.ms-excel;charset=utf-8");        response.setHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes(), "iso-8859-1"));        ServletOutputStream out = response.getOutputStream();        BufferedInputStream bis = null;        BufferedOutputStream bos = null;        try {          bis = new BufferedInputStream(is);          bos = new BufferedOutputStream(out);          byte[] buff = new byte[2048];          int bytesRead;          // Simple read/write loop.          while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {            bos.write(buff, 0, bytesRead);          }        } catch (final IOException e) {          throw e;        } finally {          if (bis != null)            bis.close();          if (bos != null)            bos.close();        }        return null;    }

4 jsp调用：

<button class="btn btn-sm  btn-info" type="button"style="vertical-align: top;" onclick="exportExcel(this)">    <i class="fa fa-search"></i>导出Excel</button>function exportExcel(dom) {    var rows = 10,    COName=$.trim($("#COName").val()),    FullName=$.trim($("#FullName").val()),    Name=$.trim($("#Name").val());    $(dom).attr("disabled", "disabled");    window.open("export.action?COName=" + COName + "&FullName=" + FullName + "&Name=" +Name);}

5 效果(ie浏览器)