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我的 java 应用程序无法下载 XLSX 文件时遇到问题。

按照此链接中显示的示例：使用 Apache POI 创建供用户下载的 excel 文件，我尝试了两种配置来下载/保存电子表格。

首先使用 .XLS 文件：

response.setContentType("application/ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=testxls.xls");

HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet();
HSSFRow row = sheet.createRow(0);
HSSFCell cell = row.createCell(0);
cell.setCellValue("Some text");

ByteArrayOutputStream outByteStream = new ByteArrayOutputStream();
wb.write(outByteStream);

byte[] outArray = outByteStream.toByteArray();
OutputStream outStream = response.getOutputStream();
outStream.write(outArray);
outStream.flush();

这行得通。

然后我尝试了一个 XLSX 文件：

response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setHeader("Content-Disposition", "attachment; filename=testxls.xlsx");

XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet();
XSSFRow row = sheet.createRow(0);
XSSFCell cell = row.createCell(0);
cell.setCellValue("Some text");

ByteArrayOutputStream outByteStream = new ByteArrayOutputStream();
wb.write(outByteStream);

byte[] outArray = outByteStream.toByteArray();
OutputStream outStream = response.getOutputStream();
outStream.write(outArray);
outStream.flush();

当我尝试这个时，我收到消息：“ Excel 在 'testxls.xlsx' 中发现了不可读的内容。你想恢复这个工作簿的内容吗？...... ”

尽管有此消息，电子表格仍可正常打开，但我真的想删除此消息。

有任何想法吗？

4

2 回答 2

0

我知道这是一个非常古老的（6 年），但是在更新了一些旧代码以从 HSSF 移动到 XSSF 之后，我来到了这里，我的问题是缺少 jar xmlbeans-3.1.0.jar。错误已写入 TomCat localhost 日志“java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlObject”

于 2020-07-13T14:55:49.703 回答
-1

使用这个JSP代码并成功生成excel文件。我已经通过数据库给excel文件输入了你也可以手动输入。

<%HSSFWorkbook wb = new HSSFWorkbook();
    HSSFSheet sheet = wb.createSheet();
       try {
        java.sql.Connection con;
        Class.forName("com.mysql.jdbc.Driver");
        con = DriverManager.getConnection("jdbc:mysql://localhost:3306/custinfo","root","abc");
            Statement st= con.createStatement(); 
            out.println("hello world");
        ResultSet rs=st.executeQuery("select name ,state ,balance,description from customerdata where customerid='"+Id+"'"); 

        HSSFRow row = sheet.createRow((short)0);
        row.createCell((short)0).setCellValue("NAME");
        row.createCell((short)1).setCellValue("STATE");
        row.createCell((short)2).setCellValue("BALANCE");
        row.createCell((short)3).setCellValue("DESCRIPTION");
        while(rs.next())
        {
             out.println("hello world data");       
            HSSFRow row1 = sheet.createRow((short)i);
            row1.createCell((short)0).setCellValue(rs.getString("name"));
            row1.createCell((short)1).setCellValue(rs.getString("state"));
         row1.createCell((short)2).setCellValue(rs.getString(3));
         row1.createCell((short)3).setCellValue(rs.getString(4));
         i=i+1;
        sheet.autoSizeColumn((short)1); 

        }

       }
      catch(SQLException e) {
        out.println("SQLException caught: " +e.getMessage());
      }%>
    // create a small spreadsheet
    <%

    %>
    <% 

    ByteArrayOutputStream outByteStream = new ByteArrayOutputStream();
    wb.write(outByteStream);
    byte [] outArray = outByteStream.toByteArray();
    response.setContentType("application/ms-excel");
    response.setContentLength(outArray.length);
    response.setHeader("Expires:", "0"); // eliminates browser caching
    response.setHeader("Content-Disposition", "attachment; filename=testxls.xls");
    OutputStream outStream = response.getOutputStream();
    outStream.write(outArray);
    outStream.flush();

    %>
于 2013-06-01T07:10:02.037 回答