使用 LZMA SDK 在 Java 中进行压缩导出(POI 如何快速导百万级数据的 Excel)

        //https://www.cnblogs.com/operationhome/p/12253549.html
        //https://cloud.tencent.com/developer/ask/57625(XZ 是基于 LZMA2（LZMA 的改进版本）的文件格式,考虑客户对 zip 压缩软件支持,暂时放弃)
        //压缩文件流(可以不用保存在本地再输出,通过 httpServletResponse 直接输出)
        ZipOutputStream zipOutputStream = new ZipOutputStream(httpServletResponse.getOutputStream());
        //构造流入对象
        ExcelWriter excelWriter = EasyExcel.write(zipOutputStream)
                .excelType(ExcelTypeEnum.XLSX)
                .head(ContractAccrualResponse.class)
                .build();
        try {
            //文件名称
            String fileName = StringUtils.join("利息计提批量导出(", contractAccrualQueryRequest.getCorpCode(), ")", ExcelTypeEnum.XLSX.getValue());
            //对文件名进行编码处理中文问题
            String zipFileName = new String(("利息计提批量导出.zip").getBytes(), StandardCharsets.UTF_8);
            //设置响应头
            httpServletResponse.setCharacterEncoding("UTF-8");
//            httpServletResponse.setContentType("application/vnd.ms-excel");
            httpServletResponse.setHeader("Content-disposition", "attachment;filename*=utf-8''" + URLEncoder.encode(zipFileName, "UTF-8"));
//            for (int i = 0; i < 15; i++) {
//                contractAccrualResponseList.addAll(contractAccrualResponseList);
//            }
            //切割数据(XLSX 单个 sheet 只能容纳 1048576 行数据)
            int exportMaxNum = 1000000;
            List<List<ContractAccrualResponse>> partition = Lists.partition(contractAccrualResponseList, exportMaxNum);
            for (int i = 0; i < partition.size(); i++) {
                String sheetName = StringUtils.join("Sheet_", String.valueOf(i * exportMaxNum + 1), "_", exportMaxNum <= partition.get(i).size() ? (i + 1) * exportMaxNum : (i + 1) * exportMaxNum + partition.get(i).size());
                excelWriter.write(partition.get(i), EasyExcel.writerSheet(i, sheetName).build());
            }
            //将文件写入 zip 内，即将文件进行打包
            zipOutputStream.putNextEntry((new ZipEntry(fileName)));
            zipOutputStream.setComment(fileName);
        } catch (Exception exception) {
            log.error("exception: {}", exception.getMessage());
        } finally {
            if (ObjectUtils.isNotEmpty(excelWriter)) {
                excelWriter.finish();
            }
            if (ObjectUtils.isNotEmpty(zipOutputStream)) {
                zipOutputStream.finish();
            }
        }

XZ

FileInputStream inFile = new FileInputStream("src.tar");
FileOutputStream outfile = new FileOutputStream("src.tar.xz");

LZMA2Options options = new LZMA2Options();

options.setPreset(7); // play with this number: 6 is default but 7 works better for mid sized archives ( > 8mb)

XZOutputStream out = new XZOutputStream(outfile, options);

byte[] buf = new byte[8192];
int size;
while ((size = inFile.read(buf)) != -1)
   out.write(buf, 0, size);

out.finish();

http://tukaani.org/xz/java.html

https://www.cnblogs.com/operationhome/p/12253549.html

http://commons.apache.org/proper/commons-compress/examples.html(xz 也可以使用 XZCompressorOutputStream 封装类)

Apache Commons：简单的使用Compress创建7z压缩文件

https://blog.csdn.net/weixin_45492007/article/details/118069006

POI 如何快速导出千万级数据的 Excel

https://www.v2ex.com/t/795136

https://alibaba-easyexcel.github.io/quickstart/write.html