@Test public void test_writeFile() { String path = "D:\\test.xlsx"; // String path = "D:\\test.xls"; // String path = "D:/"; // String path = "D:\\"; long startTime = System.currentTimeMillis(); try { ExcelUtil.writeFile(path); } catch (IOException e) { e.printStackTrace(); } System.out.println("cost :" + (System.currentTimeMillis() - startTime)); }