时间转换器，支持java.util.Date,java.sql.Timestamp,java.sql.Date

用于struts2在web开发中，页面显示时间，和action中时间字段，自动转换。-Time converter, supports java.util.Date, java.sql.Timestamp, java.sql.Date for struts2 in web development, page display time, and action in the field of time, automatically.