如何在Vaadin 8中输入时间戳 [英] How to enter timestamp in Vaadin 8

问题描述

我正在尝试使用 DateTimeField 输入时间戳，但是在我的实体中，我具有 java.sql.timestamp .将datetimefield转换为时间戳给出了错误

I am trying to enter timestamp using DateTimeField but in my entity i am having java.sql.timestamp. Converting datetimefield to timestamp is giving error

ConversionClass

ConversionClass

package com.vaadin.convertor;
import java.sql.Timestamp;
import java.time.LocalDateTime;
import com.vaadin.data.Converter;
import com.vaadin.data.Result;
import com.vaadin.data.ValueContext;
@SuppressWarnings("serial")
public class StringTimestampConvertor implements Converter<LocalDateTime, 
Timestamp> {

@SuppressWarnings("unchecked")

public Result<Timestamp> convertToModel(LocalDateTime value, ValueContext 
 context) {
    Result<Timestamp> rs =  (Result<Timestamp>) Timestamp.valueOf(value);
    return rs;
}

@Override
public LocalDateTime convertToPresentation(Timestamp value, ValueContext 
 context) {
    // TODO Auto-generated method stub
    return null;
    }
}

这给出了无法将时间戳转换为结果的错误

This is giving error that Timestamp cannot be casted into Result

推荐答案

这给出了无法将时间戳转换为结果的错误

This is giving error that Timestamp cannot be casted into Result

这不是正确的转换方式(您不能将Timestamp类转换为Result)

This is not a correct way of casting (You cannot cast a Timestamp class to a Result)

Result<Timestamp> rs = (Result<Timestamp>) Timestamp.valueOf(value);

您应该改为Result.ok(Timestamp.valueOf(value)); (结果界面 )

这篇关于如何在Vaadin 8中输入时间戳的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！