錯誤碼400（此處只講數據類型中的date類型傳遞時發生的錯誤）解決方式

1.後端的時間類型無法正確存到數據庫
實體類中date類型的屬性上添加註解，之前已經寫過，此處不再說明
2.前端傳到後端時數據類型的問題

 formatDateTime(date) {
      var y = date.getFullYear();
      var m = date.getMonth() + 1;
      m = m < 10 ? "0" + m : m;
      var d = date.getDate();
      d = d < 10 ? "0" + d : d;
      var h = date.getHours();
      h = h < 10 ? "0" + h : h;
      var minute = date.getMinutes();
      minute = minute < 10 ? "0" + minute : minute;
      var second = date.getSeconds();
      second = second < 10 ? "0" + second : second;
      return y + "-" + m + "-" + d + " " + h + ":" + minute + ":" + second;
    },

更多結構的date類型請轉到JS中new Date()日期格式處理