在java后台使用Apache poi 实现生成一个excel文档并提供前台下载

function exportBatch() { 
    //get请求，可以传递参数，比方说我这里就传了一堆卷号，我只生成传过去的这堆卷号的检验记录 
    //参数rollNumbers的细节就不展示了，业务相关 
    window.location.href = '../ir/exportSurface?rollNumberList=' + rollNumbers; 
  } 

<dependency> 
      <groupId>org.apache.poi</groupId> 
      <artifactId>poi</artifactId> 
      <version>3.14</version> 
    </dependency> 

/*** 
   * 批量导出表面质量检验记录 
   * 
   * @return 
   * @throws Exception 
   */ 
  @RequestMapping(value = "exportSurface", method = RequestMethod.GET) 
  @ResponseBody 
  public void exportSurface(HttpServletRequest request, 
              HttpServletResponse response) throws Exception { 
    //参数获取及处理，业务相关不展示 
    //把要填写的数据放在一个map里 
    Map<String, Object> map = new HashMap<String, Object>(); 
    map.put("sequence", "0001");//mock编号 
    map.put("date", DateUtils.toDateStr(new Date(), DateUtils.DEFAULT_DATE_PATTERN_CHINESE)); 
    map.put("chetaihao", "1#");//mock车台号 
    map.put("productName", "预应力钢绞线");//mock品名 
    map.put("specification", "规格");//mock规格 
    map.put("memo", "备注");//mock备注 
    map.put("inspectRecordBizList", inspectRecodeBizList); 
    ExcelUtils.exportInspectionRecordSurface(request, response, map); 
  } 

public static void exportInspectionRecordSurface(HttpServletRequest request, HttpServletResponse response, Map map) throws IOException { 
    //模板的路径，这个在自己的项目中很容易弄错，相对位置一定要写对啊 
   String psth = request.getRealPath("/") + INSPECTIONRECORD_SURFACE_TEMPLET_PATH; 
    Workbook webBook = readExcel(psth); 
    createCellStyle(webBook); 
    Sheet sheet = webBook.getSheetAt(0); 
   //开始操作模板，找到某行某列（某个cell），需要注意的是这里有个坑，行和列的计数都是从0开始的 
   //一次数据插入的位置不对，别灰心，多试几次就好啦，你要是能看懂我下面的代码，数据插在了什么位置，你就明白了 
    int rows = 1; 
    Row row = sheet.getRow(rows); 
    row.createCell(1).setCellValue((String) map.get("sequence")); 
    row.createCell(3).setCellValue((String) map.get("date")); 
    row.createCell(9).setCellValue((String) map.get("chetaihao")); 
    rows = 2; 
    row = sheet.getRow(rows); 
    row.createCell(1).setCellValue((String) map.get("productName")); 
    row.createCell(3).setCellValue((String) map.get("specification")); 
    row.createCell(9).setCellValue((String) map.get("memo")); 
   //检验记录的插入业务相关，不展示，其实就是for循环在合适的行合适的列插入一个个对象的属性即可，你这么聪明，没问题的 
    writeExcel(response, webBook, "表面质量检验记录"); 
  } 

//这里得有你自己的package名 
 
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.HSSFWorkbook; 
import org.apache.poi.ss.usermodel.*; 
 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import java.io.*; 
import java.net.URLEncoder; 
import java.util.ArrayList; 
import java.util.List; 
import java.util.Map; 
 
/** 
 * Created by bwju on 2016/12/06. 
 */ 
public class ExcelUtils { 
  private static final String INSPECTIONRECORD_SURFACE_TEMPLET_PATH = "/asserts/templete/InspectionRecordSurface.xls"; 
  private static HSSFCellStyle cellstyle = null; 
 
  public static void exportInspectionRecordSurface(HttpServletRequest request, HttpServletResponse response, Map map) throws IOException { 
    //实现上文里有，改个函数名，写你的操作模板函数吧！ 
  } 
 
  private static Workbook readExcel(String filePath) { 
    InputStream in = null; 
    Workbook work = null; 
    try { 
      in = new FileInputStream(filePath); 
      work = new HSSFWorkbook(in); 
    } catch (FileNotFoundException e) { 
      System.out.println("文件路径错误"); 
      e.printStackTrace(); 
    } catch (IOException e) { 
      System.out.println("文件输入流错误"); 
      e.printStackTrace(); 
    } 
    return work; 
  } 
 
  private static void writeExcel(HttpServletResponse response, Workbook work, String fileName) throws IOException { 
    OutputStream out = null; 
    try { 
      out = response.getOutputStream(); 
      response.setContentType("application/ms-excel;charset=UTF-8"); 
      response.setHeader("Content-Disposition", "attachment;filename=" 
          .concat(String.valueOf(URLEncoder.encode(fileName + ".xls", "UTF-8")))); 
      work.write(out); 
    } catch (IOException e) { 
      System.out.println("输出流错误"); 
      e.printStackTrace(); 
    } finally { 
      out.close(); 
    } 
  } 
 
  private static Cell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, String value) { 
    cell.setCellStyle(style); 
    cell.setCellValue(value); 
    return cell; 
  } 
 
  private static Cell setCellStyleWithValue(Cell cell, String value) { 
    cell.setCellStyle(cellstyle); 
    cell.setCellValue(value); 
    return cell; 
  } 
 
 
  private static Cell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, RichTextString value) { 
    cell.setCellStyle(style); 
    cell.setCellValue(value); 
    return cell; 
  } 
 
  private static Cell setCellStyleWithValue(Cell cell, int value) { 
    cell.setCellStyle(cellstyle); 
    cell.setCellValue(value); 
    return cell; 
  } 
 
  private static Cell setCellStyleWithValue(Cell cell, double value) { 
    cell.setCellStyle(cellstyle); 
    cell.setCellValue(value); 
    return cell; 
  } 
 
  private static HSSFCellStyle createCellStyle(Workbook wb) { 
    cellstyle = (HSSFCellStyle) wb.createCellStyle(); 
    cellstyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); 
    cellstyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); 
    cellstyle.setBorderLeft(HSSFCellStyle.BORDER_THIN); 
    cellstyle.setBorderRight(HSSFCellStyle.BORDER_THIN); 
    cellstyle.setBorderTop(HSSFCellStyle.BORDER_THIN); 
    cellstyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); 
    return cellstyle; 
  } 
}