hutool导出CSV文件

hutool导出CSV文件参考代码：

@PostMapping("/export")
public ResponseEntity<FileSystemResource> export() throws IOException {
    // 写到临时目录，如果临时目录满了系统会自动清除。
    File distFile = new File(System.getProperty("java.io.tmpdir"), "test.csv");
    CsvWriter csvWriter = new CsvWriter(distFile);
    csvWriter.writeHeaderLine("策略id", "账户id");
    List<List<Long>> rowList = new ArrayList<>();
    rowList.add(Arrays.asList(111L, 222L));
    rowList.add(Arrays.asList(333L, 444L));
    rowList.add(Arrays.asList(555L, 666L));
    csvWriter.write(rowList);
    csvWriter.close();
    final FileSystemResource fsr = new FileSystemResource(distFile);
    return ResponseEntity.status(HttpStatus.OK)
            .header("Content-disposition", "attachment;filename=test.csv")
            .contentType(MediaType.APPLICATION_OCTET_STREAM)
            .contentLength(fsr.contentLength())
            .body(fsr);
}
如有问题请指出，THS！