使用SimpleDateFormat的问题 [英] Problems using SimpleDateFormat

问题描述

显然，我缺少一些基本的东西。我在格式化jspinner的值时遇到问题。我尝试了几种不同的方法并继续收到错误，没有跟踪它们，除了它与我如何从jspinner中获取值有关。

Apparently, I'm missing something fundamental. I'm having a problem with formatting the value of a jspinner. I've tried a couple different ways and keep receiving an error, didn't keep track of them, other than it has to do with how I'm trying to grab the value from jspinner.

以下是微调代码：

//setup date format for both spinners
SimpleDateFormat datePattern = new SimpleDateFormat("MM/dd/yyyy");
JSpinner dateFrom = new JSpinner(new SpinnerDateModel());
dateFrom.setEditor(new JSpinner.DateEditor(dateFrom, datePattern.toPattern()));
JPanel dateFromPanel = new JPanel(new GridLayout());
dateFromPanel.add(dateFrom);
dateFromPanel.setBorder(new TitledBorder("Date - From"));

以下是我目前正在尝试获取格式的方式：

Here is how I'm currently trying to get the format:

SimpleDateFormat sdfSource = new SimpleDateFormat("MM/dd/yyyy");
Date from = sdfSource.parse(dateFrom.getValue().toString());
SimpleDateFormat sdfDestination = new SimpleDateFormat("MM/dd/yyyy");           
String dosFrom = sdfDestination.format(from);

当前错误：
线程main中的异常java.text.ParseException：无法解析的日期：2006年10月23日星期一00:00:00

Current error: Exception in thread "main" java.text.ParseException: Unparseable date: "Mon Oct 23 00:00:00 EDT 2006"

推荐答案

我怀疑问题是这样的：

dateFrom.getValue().toString()

我怀疑 dateFrom.getValue（）只返回日期 - 当然不会没有任何相关的格式。你应该只使用它来代替解析：

I suspect dateFrom.getValue() is just returning a Date - which of course doesn't have any associated format. Instead of parsing that, you should just cast it:

Date from = (Date) dateFrom.getValue();

我当然可能是错的......但那是我的第一个想法。

I could be wrong, of course... but that would be my first thought.

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