// 最開始是這么寫的
DataValidationConstraint dateConstraint = validationHelper
.createDateConstraint(DVConstraint.OperatorType.BETWEEN, "1900/1/1", "2100/1/1", "yyyy/m/d");
結果導出的excel中校驗數據有效性多出了一個=,導致校驗有誤

解決辦法:時間上限和下限加一個date函數
DataValidationConstraint dateConstraint = validationHelper
.createDateConstraint(DataValidationConstraint.OperatorType.BETWEEN, "date(1900,1,1)", "date(2099,12,31)", "yyyy/MM/dd");
