日期转换与修改

灰太狼 2024-04-23 12:31 64阅读 0赞

import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    
    public class DateUtil {
        
    	private static final String SPLIT_SPACE = " ";//空格分隔符号
    	private static final String DATE_SPLIT_BIAS_LINE ="/";//日期分隔符斜线
    	private static final String DATE_SPLIT_HORI_LINE = "-";//日期分隔符 横线
    	/**
    	 * 日期 修改为 23:59:59
    	 * @param strDate
    	 * @return
    	 */
    	public static String dateTransTo59(String strDate){
        
    		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    		try {
        
    			if(!strDate.contains(DATE_SPLIT_BIAS_LINE) && !strDate.contains(DATE_SPLIT_HORI_LINE)){
        
    				return strDate;
    			}
    			if(strDate.contains(DATE_SPLIT_BIAS_LINE)){
        
    				strDate = dateFormatTransition(strDate);
    			}
    			Date date = sdf.parse(strDate);
    			Calendar cal = Calendar.getInstance();
    			cal.setTime(date);
    			cal.add(Calendar.DAY_OF_MONTH, -1);
    			date = cal.getTime();
    			strDate = sdf.format(date).split(SPLIT_SPACE)[0] +SPLIT_SPACE+ "23:59:59";
    		} catch (ParseException e) {
        
    		}
    		return strDate;
    	}
    	/**
    	 * 日期格式转换
    	 * @param dateString
    	 * @return
    	 */
    	public static String dateFormatTransition(String dateString){
        
    		dateString = dateString.split(SPLIT_SPACE)[0].replaceAll(DATE_SPLIT_BIAS_LINE, DATE_SPLIT_HORI_LINE);
    		String str[]  =dateString.split(DATE_SPLIT_HORI_LINE);
    		if(str.length==3 && dateString.length()<10){
        
    			if(str[1].length() ==1){
        
    				str[1] ="0"+str[1];
    			}
    			if(str[2].length()==1){
        
    				str[2] = "0" +str[2];
    			}
    			dateString = str[0] +DATE_SPLIT_HORI_LINE+ str[1] +DATE_SPLIT_HORI_LINE+ str[2];
    		}
    		return dateString +" 00:00:00";
    	}
    }