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java - hibernate 时间类型转换，date 属性的时间字段取出来后变样了
PHP中文网
PHP中文网 2017-04-18 09:56:01
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这个是字段属性

@Column(name = "create_time",insertable = false,updatable = false)
@Temporal(TemporalType.TIMESTAMP)
private Date create_time;
保存在mysql的时候数据是正确的，
create_time
2016-08-30 09:27:30
2016-08-30 09:31:32

但是取出来的时候变成了

"create_time": "2016-08-30T01:31:32.000+0000",

这种时间，怎么才能做成数据库那样的时间返回格式呢
程序是直接return 这个对象后 返回 json 的
自己查询过一些答案，都是取出来自己去格式化的，可是我这里是直接返回对象json解析，对象的属性是 date 类型，格式化后转换成 string 后没办法 set 了

这个程序里面我看之前的人好像写了一个自定义类型的 string-binary （对应数据库存 varbinary）

@Column(name = "content",nullable = false)
@Type(type = "string-binary")
private String content;

这个时间是不是也得需要这样，自己自定义一个类型去弄？

还有，我想以后数据库保存时间字段都保存成时间戳该怎么注解字段的默认值呢

我是从PHP转到Java来的，不怎么懂
公司的Java跑了，唉，赶鸭子上架

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阿神
阿神2017-04-18 09:58:01 2 floor

Finally I found the solution:
You need to add a custom type yourself
自定义类 LocalDateTimeType

package com.meclass.hibernate;

public class LocalDateTimeType extends org.hibernate.type.LocalDateTimeType
{
    
    public static final LocalDateTimeType INSTANCE = new LocalDateTimeType();
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Override
    public String getName()
    {
        return "local-date-time";
    }

}

Then configure this type in the project
Introduce the model and configure it there

@Configuration
@EnableTransactionManagement
public class DataSourceConfig{
    @Bean(destroyMethod = "close")
    public DataSource dataSource()
    {
        return ConnectionManager.instance().createDataSource();
    }
    @Bean
    public SessionFactory sessionFactory()
    {
        LocalSessionFactoryBuilder builder = new LocalSessionFactoryBuilder(
                dataSource());
        builder.scanPackages();
        builder.registerTypeOverride(StringVarbinaryType.INSTANCE);//这个是之前对应数据库 varbinary 自定义 @type("string-binary")的解决
        builder.registerTypeOverride(LocalDateTimeType.INSTANCE);//这个是加载自定义时间的
        return builder.buildSessionFactory();
    }
}

Finally, just annotate this type on the fields that require custom format

@Column(name = "create_time",insertable = false,updatable = false)
@Temporal(TemporalType.TIMESTAMP)
@Type(type = "local-date-time")
private LocalDateTime create_time;

The final return is like this

 "create_time": "2016-09-02 11:59:07"
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PHPzhong
PHPzhong2017-04-18 09:58:01 1 floor

Provide DateUtils.java class to implement conversion between Date and various String type formats: 

import java.math.BigDecimal;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import org.apache.commons.lang3.StringUtils;
import com.alibaba.common.lang.StringUtil;
import com.alibaba.nonda.json.ParseException;

public class DateUtil {

    public static final String DATE_FORMAT     = "yyyy-MM-dd";
    public static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    public static final String DATETIME        = "yyyyMMddHHmmss";

    /**
     * 计算两个日期之间相差的天数
     * 
     * @param smdate 较小的时间
     * @param bdate 较大的时间
     * @return 相差天数
     * @throws ParseException
     * @throws Exception
     */
    public static int daysBetween(Date smdate, Date bdate) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            smdate = sdf.parse(sdf.format(smdate));
            bdate = sdf.parse(sdf.format(bdate));
        } catch (java.text.ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(smdate);
        long time1 = cal.getTimeInMillis();
        cal.setTime(bdate);
        long time2 = cal.getTimeInMillis();

        long between_days = (time2 - time1) / (1000 * 3600 * 24);
        return new BigDecimal(String.valueOf(between_days)).abs().intValue();
    }

    /**
     * @description 将时间字符串转化为Date
     * @author Anan
     * @time 2013年7月26日 下午7:50:32
     * @param time 时间字符串
     * @param formatStr 时间格式 如"2013-7-26 19:52:47"、"2013-7-26"
     * @return
     */
    public static Date toDate(String time, String formatStr) {
        Date date = null;
        DateFormat dateFormat = new SimpleDateFormat(formatStr);
        try {
            date = dateFormat.parse(time);
        } catch (java.text.ParseException e) {
            e.printStackTrace();
        }
        return date;
    }

    public static Date toDatebyday(String time, String formatStr) {
        Date date = null;
        DateFormat dateFormat = new SimpleDateFormat(formatStr, Locale.ENGLISH);
        try {
            date = dateFormat.parse(time);
        } catch (java.text.ParseException e) {
            e.printStackTrace();
        }
        return date;
    }

    public static String toDatebydaytoString(String time, String formatStr) throws java.text.ParseException {
        Date date = null;
        String dateString = "";
        DateFormat dateFormat = new SimpleDateFormat(formatStr, Locale.ENGLISH);

        date = dateFormat.parse(time);
        dateString = formateDate(date);

        return dateString;
    }

    public static Date toDatebytime(Date time, String formatStr) throws java.text.ParseException {
        Date date = null;
        String dateString = "";
        DateFormat dateFormat = new SimpleDateFormat(formatStr, Locale.ENGLISH);

        dateString = formateDate(time);
        date = toDate(dateString);

        return date;
    }

    /**
     * @description 将日期转化为字符串
     * @author Anan
     * @time 2013年7月30日 下午4:32:30
     * @param date
     * @param formatStr
     * @return
     */
    public static String toString(Date date, String formatStr) {
        if (null == date || StringUtils.isBlank(formatStr)) return "";
        SimpleDateFormat sdf = new SimpleDateFormat(formatStr);
        return sdf.format(date);
    }

    /**
     * @description 将年月日转化为日期
     * @author Anan
     * @time 2013年7月30日 下午5:00:33
     * @param year
     * @param month
     * @param day
     * @return
     * @throws java.text.ParseException
     */
    public static Date toDate(int year, int month, int day) throws java.text.ParseException {
        Date date = null;
        Calendar calender = Calendar.getInstance();
        calender.set(Calendar.YEAR, year);
        calender.set(Calendar.MONTH, month - 1);
        calender.set(Calendar.DATE, day);
        calender.set(Calendar.HOUR_OF_DAY, 0);
        calender.set(Calendar.MINUTE, 0);
        calender.set(Calendar.SECOND, 0);
        date = calender.getTime();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        date = sdf.parse(sdf.format(date));
        return date;
    }

    /**
     * @description 结束日期属于开始日期后的第几个月的日期
     * @author Anan
     * @time 2013年8月27日 下午10:00:33
     * @param startDate 开始日期
     * @param endDate 结束日期
     * @return
     */
    public static int monthsFromStartDate(Date startDate, Date endDate) {
        int result = 0;
        Date temp = null;
        startDate = toDate(toString(startDate, "yyyy-MM-dd"), "yyyy-MM-dd");
        endDate = toDate(toString(endDate, "yyyy-MM-dd"), "yyyy-MM-dd");
        // 开始日期 大于 结束日期 两个日期互换 例如： startDate 2013-05-21 endDate = 2013-04-20
        if (startDate.after(endDate)) {
            temp = startDate;
            startDate = endDate;
            endDate = temp;
        }
        Date tempEndDate1 = null;
        Date tempEndDate2 = null;
        int a = getDayOfMonth(startDate);
        int b = getDayOfMonth(endDate);
        int c = a - b;
        Calendar c1 = Calendar.getInstance();
        Calendar c2 = Calendar.getInstance();
        c1.setTime(startDate);
        c2.setTime(endDate);
        c2.set(Calendar.DAY_OF_MONTH, a);
        tempEndDate2 = c2.getTime();
        int i = 0;
        while (true) {
            tempEndDate1 = addToMonth(startDate, i);
            if (tempEndDate1.compareTo(tempEndDate2) == 0) {
                result = i;
                break;
            }
            i++;
            if (i == 999999999) {// 防止死循环
                break;
            }
        }
        if (c < 0) {
            result = result + 1;
        }
        return result;
    }

    /**
     * 获取开始时间与结束时间之间间隔的月数
     * 
     * @author yansong
     * @param startDate
     * @param endDate
     * @return
     */
    public static int monthsBetween(Date startDate, Date endDate) {
        int iMonth = 0;
        try {
            Calendar objCalendarDateStart = Calendar.getInstance();
            objCalendarDateStart.setTime(startDate);
            Calendar objCalendarDateEnd = Calendar.getInstance();
            objCalendarDateEnd.setTime(endDate);
            if (objCalendarDateEnd.equals(objCalendarDateStart) || objCalendarDateStart.after(objCalendarDateEnd)) {
                return 0;
            } else {
                if (objCalendarDateEnd.get(Calendar.YEAR) > objCalendarDateStart.get(Calendar.YEAR)) {
                    iMonth = (objCalendarDateEnd.get(Calendar.YEAR) - objCalendarDateStart.get(Calendar.YEAR)) * 12
                             + objCalendarDateEnd.get(Calendar.MONTH) - objCalendarDateStart.get(Calendar.MONTH);
                } else {
                    iMonth = objCalendarDateEnd.get(Calendar.MONTH) - objCalendarDateStart.get(Calendar.MONTH);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return iMonth;
    }

    /**
     * 获取输入日期所在月份的第一天
     * 
     * @author yansong
     * @param date
     * @return
     */
    public static Date getFristDateForCurrentMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.set(GregorianCalendar.DAY_OF_MONTH, 1);

        return cal.getTime();
    }

    /**
     * 获取输入日期所在月份的最后一天
     * 
     * @author yansong
     * @param date
     * @return
     */
    public static Date getLastDateForCurrentMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);

        cal.set(Calendar.DATE, 1);
        cal.roll(Calendar.DATE, -1);

        return cal.getTime();
    }

    /**
     * @description 获取某年某月的第一天
     * @author Anan
     * @time 2013年7月30日 下午4:27:53
     * @param year 某年
     * @param month 某月
     * @return
     */
    public static Date getMonthBegin(int year, int month) {
        Date _month_begin = null;
        Calendar calender = Calendar.getInstance();
        calender.set(Calendar.YEAR, year);
        calender.set(Calendar.MONTH, month - 1);
        calender.set(Calendar.DATE, 1);// 把日期设置为当月第一天
        calender.set(Calendar.HOUR_OF_DAY, 0);
        calender.set(Calendar.MINUTE, 0);
        calender.set(Calendar.SECOND, 0);
        _month_begin = calender.getTime();
        return _month_begin;
    }

    /**
     * @description 获取某年某月的最后一天
     * @author Anan
     * @time 2013年7月30日 下午4:28:59
     * @param year 某年
     * @param month 某月
     * @return
     */
    public static Date getMonthEnd(int year, int month) {
        Date month_end = null;
        Calendar calender = Calendar.getInstance();
        calender.set(Calendar.YEAR, year);
        calender.set(Calendar.MONTH, month - 1);
        calender.set(Calendar.DATE, 1);// 把日期设置为当月第一天
        calender.roll(Calendar.DATE, -1);// 日期回滚一天，也就是最后一天
        calender.set(Calendar.HOUR_OF_DAY, 0);
        calender.set(Calendar.MINUTE, 0);
        calender.set(Calendar.SECOND, 0);
        month_end = calender.getTime();
        return month_end;
    }

    /**
     * @description 得到指定月的天数
     * @author Anan
     * @time 2013年7月30日 下午4:48:00
     * @param year 某年
     * @param month 某月
     * @return
     */
    public static int getMonthLastDay(int year, int month) {
        Calendar calender = Calendar.getInstance();
        calender.set(Calendar.YEAR, year);
        calender.set(Calendar.MONTH, month - 1);
        calender.set(Calendar.DATE, 1);// 把日期设置为当月第一天
        calender.roll(Calendar.DATE, -1);// 日期回滚一天，也就是最后一天
        int maxDate = calender.get(Calendar.DATE);
        return maxDate;
    }

    /**
     * @description 得到当前日期月的天数
     * @author Anan
     * @time 2013年9月1日 下午1:01:44
     * @param date
     * @return
     */
    public static int getMonthLastDay(Date date) {
        Calendar calender = Calendar.getInstance();
        calender.setTime(date);
        calender.set(Calendar.DATE, 1);// 把日期设置为当月第一天
        calender.roll(Calendar.DATE, -1);// 日期回滚一天，也就是最后一天
        int maxDate = calender.get(Calendar.DATE);
        return maxDate;
    }

    /**
     * @description 得到日期中的月份
     * @author William
     * @time 2013年10月24日 下午1:01:44
     * @param date
     * @return
     */
    public static int getMonth(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.MONTH);
    }

    /**
     * @description 当月的第几天
     * @author Anan
     * @time 2013年8月22日 下午9:24:30
     * @param date
     * @return
     */
    public static int getDayOfMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.DAY_OF_MONTH);
    }

    /**
     * @description 获得当前日期 + N个月 之后的日期
     * @author Anan
     * @time 2013年8月23日 上午12:26:53
     * @param oldDate
     * @param n
     * @return
     */
    public static Date addToMonth(Date oldDate, int n) {
        Date newDate = null;
        Calendar calOld = Calendar.getInstance();
        calOld.setTime(oldDate);
        int month = calOld.get(Calendar.MONTH);
        Calendar calNew = Calendar.getInstance();
        calNew.setTime(oldDate);
        calNew.set(Calendar.MONTH, n + month);
        newDate = calNew.getTime();
        return newDate;
    }

    /**
     * @description 获得当前日期 减去 N月 之后的日期
     * @author Anan
     * @time 2013年9月1日 上午12:26:53
     * @param oldDate
     * @param n
     * @return
     */
    public static Date removeMonths(Date oldDate, int n) {
        Date newDate = null;
        Calendar calOld = Calendar.getInstance();
        calOld.setTime(oldDate);
        int month = calOld.get(Calendar.MONTH);
        Calendar calNew = Calendar.getInstance();
        calNew.setTime(oldDate);
        calNew.set(Calendar.MONTH, month - n);
        newDate = calNew.getTime();
        return newDate;
    }

    /**
     * @description 获得当前日期 减去 N天 之后的日期
     * @author Anan
     * @time 2013年8月23日 上午12:26:53
     * @param oldDate
     * @param n
     * @return
     */
    public static Date removeDays(Date oldDate, int n) {
        Date newDate = null;
        Calendar calOld = Calendar.getInstance();
        calOld.setTime(oldDate);
        int day = calOld.get(Calendar.DAY_OF_YEAR);
        Calendar calNew = Calendar.getInstance();
        calNew.setTime(oldDate);
        calNew.set(Calendar.DAY_OF_YEAR, day - n);
        newDate = calNew.getTime();
        return newDate;
    }

    /**
     * @description 获得当前日期 加上 N天 之后的日期
     * @author Anan
     * @time 2013年8月23日 上午12:26:53
     * @param oldDate
     * @param n
     * @return
     */
    public static Date addDays(Date oldDate, int n) {
        Date newDate = null;
        Calendar calOld = Calendar.getInstance();
        calOld.setTime(oldDate);
        int day = calOld.get(Calendar.DAY_OF_YEAR);
        Calendar calNew = Calendar.getInstance();
        calNew.setTime(oldDate);
        calNew.set(Calendar.DAY_OF_YEAR, day + n);
        newDate = calNew.getTime();
        return newDate;
    }

    /**
     * @description 获取两个年份之间的差值
     * @author Anan
     * @time 2013年8月23日 上午2:28:29
     * @param startDate
     * @param endDate
     * @return
     */
    public static int yearsBetween(Date startDate, Date endDate) {
        int iYears = 0;
        Calendar calS = Calendar.getInstance();
        calS.setTime(startDate);
        Calendar calE = Calendar.getInstance();
        calE.setTime(endDate);
        int i = startDate.compareTo(endDate);
        if (i == 1) {
            iYears = calS.get(Calendar.YEAR) - calE.get(Calendar.YEAR);
        } else if (i == -1) {
            iYears = calE.get(Calendar.YEAR) - calS.get(Calendar.YEAR);
        }
        return iYears;
    }

    /**
     * @param date 日期
     * @param offset 偏移量，0为周日 单位为日
     * @return WeekOfYear
     */
    public static int getWeekOfYear(Date date, int offset) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(date.getTime() - offset * 24 * 3600 * 1000L);
        return calendar.get(Calendar.WEEK_OF_YEAR);
    }

    // public static void main(String[] args) {
    // Date now = toDate("2013-1-12", "yyyy-MM-dd");
    // System.out.println(DateUtil.toString(DateUtil.addDays(now, 2),"yyyy-MM-dd"));
    // }

    /**
     * 标准格式化date
     * 
     * @param date
     * @return
     */
    public static String formateDate(Date date) {
        if (date == null) {
            return StringUtil.EMPTY_STRING;
        }

        return new SimpleDateFormat(DATE_FORMAT).format(date);
    }

    /**
     * 标准格式化datetime
     * 
     * @param date
     * @return
     */
    public static String formateDatetime(Date date) {
        if (date == null) {
            return StringUtil.EMPTY_STRING;
        }

        return new SimpleDateFormat(DATETIME_FORMAT).format(date);
    }

    /**
     * 按照"yyyy-MM-dd"的格式转换日期字符串为Date类型
     * 
     * @param dateStr 日期字符串
     * @return
     */
    public static Date toDate(String dateStr) {
        Date date = null;
        DateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT);
        try {
            date = dateFormat.parse(dateStr);
        } catch (java.text.ParseException e) {
            return null;
        }
        return date;
    }

    public static Date toDateTimes(String dateStr) {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String result = null;
        Date date = null;
        try {
            Date strToDate = sdf.parse(dateStr);
            result = toString(strToDate, DATETIME_FORMAT);
            date = toDate(result, DATETIME_FORMAT);
        } catch (java.text.ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return date;

    }

    public static String toDateTimeCompara(String dateStr) {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String result = null;

        try {
            Date strToDate = sdf.parse(dateStr);
            result = toString(strToDate, DATETIME_FORMAT);

        } catch (java.text.ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;

    }

    /**
     * 按照"yyyy-MM-dd HH:mm:ss"的格式转换日期时间字符串为Date类型
     * 
     * @param dateTimeStr 日期时间字符串
     * @return
     */
    public static Date toDateTime(String dateTimeStr) {
        Date date = null;
        DateFormat dateFormat = new SimpleDateFormat(DATETIME_FORMAT);
        try {
            date = dateFormat.parse(dateTimeStr);
        } catch (java.text.ParseException e) {
            return null;
        }
        return date;
    }

    public static String transferLongToDate(Long millSec) {

        SimpleDateFormat sdf = new SimpleDateFormat(DATETIME_FORMAT);

        Date date = new Date(millSec);

        return sdf.format(date);

    }

    /**
     * 校验日期格式是否满足yyyyMMddHHmmss这种格式
     * 
     * @param time
     * @return
     */
    public static boolean checkValidDate(String time) {
        boolean ret = true;
        try {
            int year = new Integer(time.substring(0, 4)).intValue();
            int month = new Integer(time.substring(4, 6)).intValue();
            int date = new Integer(time.substring(6, 8)).intValue();
            int hourOfDay = new Integer(time.substring(8, 10)).intValue();
            int minute = new Integer(time.substring(10, 12)).intValue();
            int second = new Integer(time.substring(12, 14)).intValue();
            Calendar cal = Calendar.getInstance();
            cal.setLenient(false); // 允许严格检查日期格式
            cal.set(year, month - 1, date);
            cal.set(year, month - 1, date, hourOfDay, minute, second);
            cal.getTime();// 该方法调用就会抛出异常
        } catch (Exception e) {
            e.printStackTrace();
            ret = false;
        }
        return ret;
    }

    public static void main(String[] args) {
        String format = "20150819202020";
        String datestr = "09090909090909";
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        System.out.println("456" + checkValidDate(datestr));
        System.out.println("789" + toDateTimes(datestr));
        System.out.println("123" + toString(toDateTimes(datestr), DATETIME_FORMAT));
        try {
            Date strToDate = sdf.parse(format);
            String result = toString(strToDate, DATETIME_FORMAT);
            System.out.println("strToDate" + strToDate);
            System.out.println("strToDate" + result);

        } catch (java.text.ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    /**
     * 获得指定日期的后一天
     * 
     * @param specifiedDay
     * @return
     */
    public static Date getSpecifiedDayAfter(Date date) {
        Calendar c = Calendar.getInstance();

        c.setTime(date);
        int day = c.get(Calendar.DATE);
        c.set(Calendar.DATE, day + 1);

        String dayAfter = new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());
        Date newdate = toDate(dayAfter);
        return newdate;
    }
}
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