更改日期格式条件查询在休眠？

Question

I am displaying my test name and date by using below query. Now my date format is 2014-02-27 17:26:49.0 but i need to display in 2014-02-27 format. How can i modify my query for this?

Session ses = sessionFactory.getCurentSession();
Criteria c = ses.createCriteria(user.class);
c.add(Restrictions.eq("id", uid));
c.add(Restrictions.eq("name", uname));

ProjectionList pl = Projections.projectionList();
pl.add(Projections.property("testid"));
pl.add(Projections.property("date"));

c.setProjection(Projections.distinct(pl));
List<String> list = c.list();

Answer 1

The code above is incorrect. It selects two fields, and you assume that it returns a List<String> . That is not possible. Every element of the list will be an Object array containing 2 elements: the testid, and the date. The date element will be of the same type as the date field in your entity (which, I hope, is java.util.Date ).

So, to display the result of the query using a specific format, you would use something like the following:

DateFormat df = new SimpleDateFormat("MMMM dd, yyyy");
List<Object[]> rows = c/list();
for (Object[] row : rows) { 
    Date date = (Date) row[1];
    System.out.println(row[0] + " - " + df.format(date);
} 

Answer 2

By using "sqlGroupProjection" I have changed my date format to **2014-02-27**

projectionList.add(Projections.sqlGroupProjection("date(date) as createdDate", "createdDate", new String[] { "createdDate" }, new Type[] { StandardBasicTypes.DATE }));

Answer 3

Try this.

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm");

    Date inputDate = new Date();

    System.out.println(simpleDateFormat.format(inputDate));
}

output :

27/02/2014 07:25

Answer 4

        SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        SimpleDateFormat format2 = new SimpleDateFormat("MMMM dd,yyyy");
        Date date = format1.parse("2014-02-27 17:26:49.00");
        System.out.println(format2.format(date));       

INPUT : 2014-02-27 17:26:49.00
OUTPUT : February 27,2014