【javaWeb】Struts 2导出excel文件

 一、功能：将界面table数据，导出为excel文件保存

二、具体实现：

2.1 jsp

 

序号书名作者价格

1	科幻世界	匿名	10
2	语文	驾教育出版社	23.5
3	落花	张三	10.5

注：button: <input type="button" value="导出excel" onclick="exportExcel()">

确定 引入调用的正确 js文件

2.2 js

<SPAN style="FONT-SIZE: 14px">function exportExcel(){
    alert("导出");
    var archiveaccount = document.forms['arcAccount'];
    archiveaccount.submit();
}</SPAN>

function exportExcel(){     alert("导出");      var archiveaccount = document.forms['arcAccount'];     archiveaccount.submit(); }

2.3 action

 

<SPAN style="FONT-SIZE: 14px">public String exportExcel() throws Exception {
        List<List<Object>> data = getExportData();    //将表格数据转换为list,此方法省略
        String fn = new String(("ArchiveAccount"+new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date())).getBytes(), "ISO-8859-1")+ ".xls";    //设置导出文件名
        if(createExcel(fn, data, "统计结果")){
            return "success";
        }
           return "init";
    }</SPAN>

public String exportExcel() throws Exception {         List<List<Object>> data = getExportData();    //将表格数据转换为list,此方法省略         String fn = new String(("ArchiveAccount"+new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date())).getBytes(), "ISO-8859-1")+ ".xls";    //设置导出文件名         if(createExcel(fn, data, "统计结果")){             return "success";         }            return "init";     }

 

 

<SPAN style="FONT-SIZE: 14px"> /**
   * 创建新的Excel 工作簿
   * */
  public boolean createExcel(String filename, List<List<Object>> data,String sheetName) {
      HSSFWorkbook workbook = null;
      HSSFSheet sheet = null;
      HSSFRow[] rows = null;
      HSSFCell[][] cells = null;
      workbook = new HSSFWorkbook();
      if (sheetName.trim().equals("")) {
          sheet = workbook.createSheet("表");
      } else {
          sheet = workbook.createSheet(sheetName);
      }
      try {
          int row = 0;
          int col = 0;
          if (data.size() > 0) {
              row = data.size();
              col = data.get(0).size();
          }
          rows = new HSSFRow[row];
          cells = new HSSFCell[row][col];
          for (int i = 0; i < data.size(); i++) {
              rows[i] = sheet.createRow((short) i);
              for (int j = 0; j < data.get(i).size(); j++) {
                  cells[i][j] = rows[i].createCell((short) j);
                  cells[i][j].setCellType(HSSFCell.CELL_TYPE_STRING);
                  if (data.get(i).get(j) != null
                          && !data.get(i).get(j).toString().trim().equals("")) {
                      cells[i][j].setCellValue(data.get(i).get(j).toString()
                              .trim());
                  } else {
                      cells[i][j].setCellValue("");
                  }
              }
          }
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
          HttpUitls.getResponse().setHeader("Content-disposition","attachment; filename=" +filename);
          workbook.write(baos);
          byte[] ba = baos.toByteArray();
          excelStream = new ByteArrayInputStream(ba);
          return true;
      } catch (Exception e) {
          return false;
      }
  }</SPAN>

   /**      * 创建新的Excel 工作簿      * */     public boolean createExcel(String filename, List<List<Object>> data,String sheetName) {         HSSFWorkbook workbook = null;         HSSFSheet sheet = null;         HSSFRow[] rows = null;         HSSFCell[][] cells = null;         workbook = new HSSFWorkbook();         if (sheetName.trim().equals("")) {             sheet = workbook.createSheet("表");         } else {             sheet = workbook.createSheet(sheetName);         }         try {             int row = 0;             int col = 0;             if (data.size() > 0) {                 row = data.size();                 col = data.get(0).size();             }             rows = new HSSFRow[row];             cells = new HSSFCell[row][col];             for (int i = 0; i < data.size(); i++) {                 rows[i] = sheet.createRow((short) i);                 for (int j = 0; j < data.get(i).size(); j++) {                     cells[i][j] = rows[i].createCell((short) j);                     cells[i][j].setCellType(HSSFCell.CELL_TYPE_STRING);                     if (data.get(i).get(j) != null                             && !data.get(i).get(j).toString().trim().equals("")) {                         cells[i][j].setCellValue(data.get(i).get(j).toString()                                 .trim());                     } else {                         cells[i][j].setCellValue("");                     }                 }             }           ByteArrayOutputStream baos = new ByteArrayOutputStream();             HttpUitls.getResponse().setHeader("Content-disposition","attachment; filename=" +filename);             workbook.write(baos);             byte[] ba = baos.toByteArray();               excelStream = new ByteArrayInputStream(ba);               return true;         } catch (Exception e) {             return false;         }     }