@Test
    public void t22SheetNoRead07() {
        List<Map<Integer, Object>> list = EasyExcel.read(
                TestFileUtil.readFile("simple" + File.separator + "simple07.xlsx"))
            // sheetNo begin with 0
            .sheet(1)
            .doReadSync();
        Assertions.assertEquals(1, list.size());
    }
test read sheet in an Excel file with specified sheetNo
fastexcel-test/src/test/java/cn/idev/excel/test/core/simple/SimpleDataTest.java