Question

创建XLSX文件时出现错误。下面的方法打开一个文件，修改此文件，并将结果保存在另一个文件中。此过程有效，但始终显示错误。

这是创建和下载文件的方法：

@RequestMapping("/excelLogbee")
public ModelAndView logbee(HttpServletResponse response) {
    List<Pedido> todosPedidosLogbee = cadastroPedidoService.filtrarLogbee();
    XSSFWorkbook workbook = null;
    try {
        workbook = new XSSFWorkbook(new FileInputStream(new File("Template Importacao - Logbee.xlsx")));
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    XSSFSheet sheet = workbook.getSheet("Solicitação");

    int rowCount = 9;
    Row row = sheet.getRow(rowCount);

    for (Pedido pedido : todosPedidosLogbee) {
        row = sheet.getRow(++rowCount);
        row.getCell(4).setCellValue(pedido.getCliente().getNome());
        row.getCell(5).setCellValue(pedido.getCliente().getEndereco() + ", " + pedido.getCliente().getNumeroEndereco());
    }

    Calendar dataHoje = Calendar.getInstance();
    String fileName = "logbee_control_breggion - " + dataHoje.get(Calendar.DAY_OF_MONTH) + "-"
            + dataHoje.get(Calendar.MONTH - 1) + "-" + dataHoje.get(Calendar.YEAR) + ".xlsx";
    try (FileOutputStream outputStream = new FileOutputStream(fileName)) {
        workbook.write(outputStream);
        ClientOutput clientOutput = new ClientOutput(response);
        DownloadHelper.download(clientOutput, "", fileName);
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }


    ModelAndView mv = new ModelAndView(PESQUISA_PEDIDO_LOGBEE_VIEW);
    mv.addObject("pedidos", todosPedidosLogbee);
    return mv;
}

这是错误：

2017-10-18 17:41:27.522 ERROR 9008 --- [nio-8080-exec-5] o.a.c.c.C.[Tomcat].
[localhost]           : Exception Processing ErrorPage[errorCode=0, 
location=/error]

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-

我尝试close()和flush()但没有效果。

在创建XLSX文件时，已经为此响应调用了getOutputStream（）

0 个答案: