https://github.com/c-rainstorm/common-utils

项目中可以使用的通用工具
https://github.com/c-rainstorm/common-utils

Last synced: 3 months ago
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项目中可以使用的通用工具

• Host: GitHub
• URL: https://github.com/c-rainstorm/common-utils
• Owner: c-rainstorm
• License: mit
• Created: 2019-08-28T01:34:17.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2022-06-29T17:36:30.000Z (over 3 years ago)
• Last Synced: 2025-04-04T10:43:57.052Z (9 months ago)
• Language: Java
• Size: 27.3 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# common-utils

项目中可以使用的通用工具

## 报表导出工具

```java

private void doExport(int sizePreExport, int totalSize, String sheetNamePrefix, int sheetSize, Function> supplier) throws Exception {

    File exportFile = Paths.get(EXPORT_DIR, sheetNamePrefix + "-" +

            DateTimeFormatterUtil.get(DateTimeFormatterUtil.YYYYMMDDHHMMSS).format(LocalDateTime.now())

             + ".xlsx").toFile();

    log.info("file name:" + exportFile.getAbsolutePath());

    try (ExportService exportService = new XLSXExportService<>(AllInOneClass.class, exportFile)) {

        long total = 0;

        for (int i = 0; i < totalSize; i += sizePreExport) {

            List dataList = supplier.apply(sizePreExport);

            long start = System.currentTimeMillis();

            exportService.append(dataList);

            total += (System.currentTimeMillis() - start);

            log.info("导出 {} 条数据耗时 {}ms", i + sizePreExport, total);

        }

    }

}

```