引起：java.io.IOException：管道损坏

Question

我得到了这个破管道异常。据我所知，当连接突然关闭时会发生此异常。我已附上以下代码。你能告诉我哪里出错了吗？ 感谢。

        remaingBarcode = gdbAutomationService.getGdbBarcodes(); //returning list of barcodes
        StringBuffer barcodes = new StringBuffer();
        barcodes.append("Barcode").append("\n");
        for(int i = 0; i < remaingBarcode.size(); i++) {
            barcodes.append(remaingBarcode.get(i));
            barcodes.append("\n");
        }
        response.setContentType("text/csv");
        response.addHeader("Content-Disposition", "attachment; filename = BarcodeDetails.csv");
        OutputStream outputStream = null;
        try {
            outputStream = response.getOutputStream();
            outputStream.write(barcodes.toString().getBytes());
        } catch(IOException e) {
            e.printStackTrace();
        } finally {
            System.out.println("In finally");
            outputStream.flush();
            outputStream.close();
        }