日期工具类，格式打印及时间加减

不念不忘少年蓝@ 2022-02-15 02:39 240阅读 0赞

一部分，待补充

package eureka.manager.config;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    
    import com.alibaba.druid.util.StringUtils;
    
    /**
     * 日期 类型转换
     * @author liujipeng
     */
    public class MyDateUtil {
    	
    	/**
    	 * @param Date
    	 * @return 2018年09月14日
    	 */
    	public static String  format(Date da) {
    		SimpleDateFormat sdf =   new SimpleDateFormat( "yyyy-MM-dd" );
    		String format = sdf.format(da);
    		String replaceFirst = format.replaceFirst("-", "年");
    		String replace = replaceFirst.replace("-", "月");
    		String string = replace+"日";
    		return string;
    	}
    	
    	/**
    	 * @param Date
    	 * @return 2018年09月14日17时20分59秒
    	 */
    	public static String  formatDetailTime(Date da) {
    		SimpleDateFormat sdf =   new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" );
    		String format = sdf.format(da);
    		String replaceFirst = format.replaceFirst("-", "年");
    		String replace = replaceFirst.replace("-", "月");
    		String replaceFirst2 = replace.replaceFirst(" ", "日").replaceFirst(":", "时").replaceFirst(":", "分")+"秒";
    		return replaceFirst2;
    	}
    
    	/**
    	 * @param 2018-09-14 17:20:59
    	 * @return Date
    	 * @throws ParseException
    	 */
    	public static Date  formatDetailTime(String time) throws ParseException {
    		SimpleDateFormat sdf =   new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" );
    		Date date = sdf.parse(time);
    		return date;
    	}
    	
    	/**
    	 * @param 2018-09-14
    	 * @return Date
    	 * @throws ParseException
    	 */
    	public static Date formatDeteTime(String time) throws ParseException {
    		SimpleDateFormat sdf =   new SimpleDateFormat( "yyyy-MM-dd" );
    		Date date = sdf.parse(time);
    		return date;
    	}
    	
    	/**
    	 * @param 2018-09-14
    	 * @return String
    	 * @throws ParseException
    	 */
    	public static String formatDeteTime(Date time) throws ParseException {
    		SimpleDateFormat sdf =   new SimpleDateFormat( "yyyy-MM-dd" );
    		String format = sdf.format(time);
    		return format;
    	}
    	
    	/**
    	 * 获取当月最后一天
    	 * @param args
    	 */
    	
    	@SuppressWarnings("unused")
    	public static String getLastDay(){
    		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    		String firstday, lastday;
    		Calendar cale = null;
    		cale = Calendar.getInstance();
    		cale.add(Calendar.MONTH, 1);
    		cale.set(Calendar.DAY_OF_MONTH, 0);
    		String format2 = format.format(cale.getTime());
    		return format2;
    	}
    	
    	
    	/**
    	 * 获取当月第一天
    	 * @param args
    	 */
    	@SuppressWarnings("unused")
    	public static String getFirstDay(){
    		Calendar cale = null;
    		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    		String firstday, lastday;
    		cale = Calendar.getInstance();
    		cale.add(Calendar.MONTH, 0);
    		cale.set(Calendar.DAY_OF_MONTH, 1);
    		firstday = format.format(cale.getTime());
    		return firstday;
    	}
    	
    	
    	/**
    	 * 给一个时间加一段时间
    	 * @param new Date()    long 1000*60=分  
    	 */
    	@SuppressWarnings("unused")
    	public static Date addDate(Date date,Long length){
    		date = new Date(date.getTime()+length);
    		return date;
    	}
    	
    	
    	/**
    	 * 给当前时间加一段时间
    	 * @param new Date()   day
    	 */
    	@SuppressWarnings("unused")
    	public static Date addDate(String day,String mouth,String hour,String min,String Second){
    		Calendar cale = Calendar.getInstance();
    		if(!StringUtils.isEmpty(day)){
    			cale.add(Calendar.MONTH, Integer.parseInt(mouth));
    		}
    		if(!StringUtils.isEmpty(day)){
    			cale.add(Calendar.DAY_OF_YEAR, Integer.parseInt(day));
    		}
    		if(!StringUtils.isEmpty(day)){
    			cale.add(Calendar.HOUR, Integer.parseInt(hour));
    		}
    		if(!StringUtils.isEmpty(min)){
    			cale.add(Calendar.MINUTE, Integer.parseInt(min));
    		}
    		if(!StringUtils.isEmpty(Second)){
    			cale.add(Calendar.SECOND, Integer.parseInt(Second));
    		}
    		return cale.getTime();
    	}
    	
    	
    	public static void main(String[] args) {
    		System.out.println(formatDetailTime(new Date()));
    		System.out.println("--");
    		System.out.println(formatDetailTime(addDate("1","1","1","1","1")));
    	}
    }