各种日期类型之间的转换

package util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.util.Calendar;
import java.util.Date;

import javafx.scene.control.DatePicker;
/**
* localDate 日期转换器
* @author Administrator
*
*/
public class LocalDateConvert {
/**
* DateTimePicker-->String(yyyy-MM-dd HH:mm)
* @param ld
* @return
*/
public static String getString(DateTimePicker ld){
int year=ld.getValue().getYear();
int month=ld.getValue().getMonthValue();
int day=ld.getValue().getDayOfMonth();
int hour=ld.getTimeValue().getHour();
int minute=ld.getTimeValue().getMinute();
String date=year+"-"+month+"-"+day+" "+hour+":"+minute;
return date;
}
/**
* DatePicker-->String(yyyy-MM-dd)
* @param ld
* @return
*/
public static String getString(DatePicker ld){
int year=ld.getValue().getYear();
int month=ld.getValue().getMonthValue();
int day=ld.getValue().getDayOfMonth();

String date=year+"-"+month+"-"+day;
return date;
}
/**
* DatePicker-->Date
* @param ld
* @return
*/
public static Date getDate(DatePicker ld){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
try {

return sdf.parse(getString(ld));
} catch (ParseException e) {

e.printStackTrace();
}
return null;
}
/**
* DateTimePicker-->date
* @param ld
* @return
*/
public static Date getDate(DateTimePicker ld){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm");
try {

return sdf.parse(getString(ld));
} catch (ParseException e) {

e.printStackTrace();
}
return null;
}

public static Date getDate(String date,String format){
SimpleDateFormat sdf=new SimpleDateFormat(format);
try {
return sdf.parse(date);
} catch (ParseException e) {

e.printStackTrace();
}
return null;
}
/**
* java.util.Date-->java.lang.String
* @param date
* @param format
* @return
*/
public static String getString(Date date,String format){
SimpleDateFormat sdf=new SimpleDateFormat(format);
return sdf.format(date);
}
/**
* java.util.Date --> java.time.LocalDateTime
* @param date
* @return
*/
public static LocalDateTime UDateToLocalDateTime(Date date) {
Instant instant = date.toInstant();
ZoneId zone = ZoneId.systemDefault();

return LocalDateTime.ofInstant(instant, zone);
}
/**
* java.util.Date --> java.time.LocalDate
* @param date
* @return
*/
public static LocalDate UDateToLocalDate(Date date) {
return UDateToLocalDateTime(date).toLocalDate();
}
/**
* java.util.Date --> java.time.LocalTime
* @param date
* @return
*/
public static LocalTime UDateToLocalTime(Date date) {
return UDateToLocalDateTime(date).toLocalTime();
}
/**
* java.time.LocalDateTime --> java.util.Date
* @param localDateTime
* @return
*/
public static Date LocalDateTimeToUdate(LocalDateTime localDateTime) {
ZoneId zone = ZoneId.systemDefault();
Instant instant = localDateTime.atZone(zone).toInstant();
return Date.from(instant);
}
/**
* java.time.LocalDate --> java.util.Date
* @param localDate
* @return
*/
public static Date LocalDateToUdate(LocalDate localDate) {
ZoneId zone = ZoneId.systemDefault();
Instant instant = localDate.atStartOfDay().atZone(zone).toInstant();
return  Date.from(instant);
}
/**
* java.time.LocalTime --> java.util.Date
* @param localDate
* @param localTime
* @return
*/
public static Date LocalTimeToUdate(LocalDate localDate,LocalTime localTime) {

LocalDateTime localDateTime = LocalDateTime.of(localDate, localTime);
ZoneId zone = ZoneId.systemDefault();
Instant instant = localDateTime.atZone(zone).toInstant();
return  Date.from(instant);
}
/**
* java.util.Date-->java.time.LocalDate(带有分和秒)
* @param dtp
* @param date
* @return
*/
public static LocalDate DateToDateTimePickerValue(DateTimePicker dtp,Date date){
dtp.setValue(UDateToLocalDate(date));
dtp.setTimeValue(dtp.getTimeValue().withHour(date.getHours()));
dtp.setTimeValue(dtp.getTimeValue().withMinute(date.getMinutes()));
return dtp.getValue();
}
/**
* java.util.Date-->java.time.LocalDate(带有分和秒)
* @param dtp
* @param date
* @return
*/
public static LocalDate DateToDateTimePickerValue(Date date){
DateTimePicker dtp=new DateTimePicker();
dtp.setValue(UDateToLocalDate(date));
dtp.setTimeValue(dtp.getTimeValue().withHour(date.getHours()));
dtp.setTimeValue(dtp.getTimeValue().withMinute(date.getMinutes()));
return dtp.getValue();
}

/**
* java.util.Date-->java.util.Date+1
* 获取日期加1
* @param date
* @return
*/
public static Date DateAddOne(Date date){
Calendar cld = Calendar.getInstance();
cld.setTime(date);
cld.add(Calendar.DAY_OF_MONTH, 1);
return cld.getTime();
}

}