Question

当我在我的应用程序中添加数据时，它会保存在CSV文件中。我还有一个选项可以下载相同的CSV文件。但它给出了错误。我的代码是：

String csvPath = Utility.getTestCSVFilePath();

        response.setContentType("application/x-download");

        response.setHeader("Content-Disposition", "attachment;filename=\"" +test.getTestName()+".csv"+ "\"");

        PrintWriter responseOut = null;

        try {
            responseOut = response.getWriter();
            InputStream inputStream = new FileInputStream(csvPath);
            OutputStream out = response.getOutputStream();
            IOUtils.copy(inputStream, out);
            out.flush();
            out.close();
            inputStream.close();
        } catch (IOException e) {
            responseOut.write("Some error has occurred while preparing the file for download.");
        }

当我调试代码时，它会在行中出错：

OutputStream out = response.getOutputStream();

问题是什么，请帮忙。

Answer 1

尝试移动此行 responseOut = response.getWriter();

后

inputStream.close();并查看是否有效

下载CSV文件时出错

1 个答案: