Question

我编写了一个用于下载excel文件的代码。文件内容源自数据库。代码在本地计算机上工作但在服务器上部署时。下载时Excel文件被破坏。我无法在代码中找到问题。请帮我摆脱这个问题。第一种导出excel的方法和第二种在excelsheet中编写内容的方法。第二种方法是通过第一种方法调用的。

public static void doGetExportException(String sheetId, ResourceRequest resourceRequest, ResourceResponse resourceResponse) throws ServletException, IOException 
{


    HttpServletResponse response = PortalUtil.getHttpServletResponse(resourceResponse);
    try 
    {
        long maxSheetId = Long.parseLong(sheetId);
        System.out.println("maxSheetId="+maxSheetId);
        List<Customer_Exception> lstCustomer_Exceptions =UploadExcelUtil.getCustomerExceptions(maxSheetId);

        XSSFWorkbook outPutSheet= writeExcelsheet(lstCustomer_Exceptions);  

        ByteArrayOutputStream outByteStream = new ByteArrayOutputStream();
        outPutSheet.write(outByteStream);
        byte [] outArray = outByteStream.toByteArray();

        String fileName = "Download_"+new Date(new java.util.Date().getTime())+".xlsx";
        response.setContentType("application/ms-excel; charset=UTF-8"); 
        response.setContentLength(outArray.length);
        response.setHeader("Expires:", "0"); 
        response.addHeader(HttpHeaders.CACHE_CONTROL, "max-age=3600, must-revalidate");
        response.addHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="+fileName);
        response.addHeader(HttpHeaders.CONTENT_ENCODING, "Binary");
        OutputStream outStream = response.getOutputStream();
        outStream.write(outArray);
        outStream.flush();
        outStream.close();   
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

private static XSSFWorkbook writeExcelsheet(List<Customer_Exception> lstCustomer_Exceptions) {
    XSSFWorkbook workbook = new XSSFWorkbook();
    XSSFSheet sheet = workbook.createSheet("Exceptions");

    CellStyle styleHeader = workbook.createCellStyle();
    XSSFFont fontHeader = workbook.createFont();
    XSSFColor color = new XSSFColor(Color.BLACK);
    fontHeader.setColor(color);
    fontHeader.setBold(true);
    fontHeader.setFontHeight(13);
    styleHeader.setFont(fontHeader);
    sheet.createFreezePane(0, 1);
    CellStyle styleData = workbook.createCellStyle();
    XSSFFont fontData = workbook.createFont();
    fontData.setColor(color);
    fontData.setFontHeight(12);
    styleData.setFont(fontData);

    int rownum = 0;
    XSSFRow rowHeader = sheet.createRow(rownum++);
    List<String> lstCellHeaders =getCellHeaders();
    int cellnum = 0;
    for(String cellHeader:lstCellHeaders){
        XSSFCell cell = rowHeader.createCell(cellnum++);
        cell.setCellStyle(styleHeader);
        cell.setCellValue((String)cellHeader);

    }  



    for (Customer_Exception customer_Exception:lstCustomer_Exceptions) {
        List<String> lstCellValues =getCellValues(customer_Exception);
        XSSFRow rowData = sheet.createRow(rownum++);

        cellnum = 0;
        for(String cellValue:lstCellValues){
            XSSFCell cell = rowData.createCell(cellnum++);
            cell.setCellStyle(styleData);
            cell.setCellValue((String)cellValue);

        }  
    }
    return workbook;
}

Answer 1

对于.xlsx，您应使用ContentType：“application / vnd.openxmlformats-officedocument.spreadsheetml.sheet”。这解决了我的问题。

使用java从服务器下载时Excel文件损坏

1 个答案: