Java / Servlet：获取当前的sql.Date

Question

What I need to do is:

1) Get user's locale from request.

2) Create new sql.Date object with current date and time, based on user's locale

3) Write it in MySQL db, column type: TIMESTAMP

What I got is:

java.util.Locale locale = request.getLocale();

java.text.DateFormat dateFormat =
java.text.DateFormat.getDateTimeInstance(
                        java.text.DateFormat.LONG, java.text.DateFormat.LONG, locale );

java.util.Date date = new java.util.Date();

java.sql.Date sqlDate = new java.sql.Date( date.getTime() );

Date is OK, but have a problem with time - always 12:00:00 AM.

Any suggestions? Is there a more efficient way to do this?

Answer 1

甚至更紧凑的解决方案;）

java.sql.Date timeNow = new Date(Calendar.getInstance().getTimeInMillis());

Answer 2

There is one more simple solution for it. use this code to get current date using java.util.Date

java.util.Calendar cal = java.util.Calendar.getInstance();
java.util.Date utilDate = cal.getTime();
java.sql.Date sqlDate = new Date(utilDate.getTime());

Answer 3

如果需要时间，则需要java.sql.Timestamp而不是java.sql.Date，并且需要数据库中的timestamp列。

Answer 4

请注意， request.getLocale使用的是Accept-Language标题的值，可能并不总是为您提供正确的语言环境。

Answer 5

Getting the time zone based on the locale may not be their actual time zone .

An example: Here in Australia, the locale is 'en-AU', but we have a few time zones with up to 3 hours difference.

I'd guess in the US they have this problem too.

A possible solution is to store UTC time instead. If the user then adjusts his timezone in, say, his prefrences, or you use some other method of passing the time zone (client/browser info say via AJAX) then you can adjust the UTC time based on that using a java.util.Calendar instance.