package com.st.test;
 
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.regex.Pattern;
 
public class DateFormatUtil {
   
  @SuppressWarnings(\"finally\")
  public static String FormatDate(String dateStr){
 
    HashMap<String, String> dateRegFormat = new HashMap<String, String>();
    dateRegFormat.put(
        \"^\\\\d{4}\\\\D+\\\\d{1,2}\\\\D+\\\\d{1,2}\\\\D+\\\\d{1,2}\\\\D+\\\\d{1,2}\\\\D+\\\\d{1,2}\\\\D*$\",
        \"yyyy-MM-dd-HH-mm-ss\");//2014年3月12日 13时5分34秒，2014-03-12 12:05:34，2014/3/12 12:5:34
    dateRegFormat.put(\"^\\\\d{4}\\\\D+\\\\d{2}\\\\D+\\\\d{2}\\\\D+\\\\d{2}\\\\D+\\\\d{2}$\",
        \"yyyy-MM-dd-HH-mm\");//2014-03-12 12:05
    dateRegFormat.put(\"^\\\\d{4}\\\\D+\\\\d{2}\\\\D+\\\\d{2}\\\\D+\\\\d{2}$\",
        \"yyyy-MM-dd-HH\");//2014-03-12 12
    dateRegFormat.put(\"^\\\\d{4}\\\\D+\\\\d{2}\\\\D+\\\\d{2}$\", \"yyyy-MM-dd\");//2014-03-12
    dateRegFormat.put(\"^\\\\d{4}\\\\D+\\\\d{2}$\", \"yyyy-MM\");//2014-03
    dateRegFormat.put(\"^\\\\d{4}$\", \"yyyy\");//2014
    dateRegFormat.put(\"^\\\\d{14}$\", \"yyyyMMddHHmmss\");//20140312120534
    dateRegFormat.put(\"^\\\\d{12}$\", \"yyyyMMddHHmm\");//201403121205
    dateRegFormat.put(\"^\\\\d{10}$\", \"yyyyMMddHH\");//2014031212
    dateRegFormat.put(\"^\\\\d{8}$\", \"yyyyMMdd\");//20140312
    dateRegFormat.put(\"^\\\\d{6}$\", \"yyyyMM\");//201403
    dateRegFormat.put(\"^\\\\d{2}\\\\s*:\\\\s*\\\\d{2}\\\\s*:\\\\s*\\\\d{2}$\",
        \"yyyy-MM-dd-HH-mm-ss\");//13:05:34 拼接当前日期
    dateRegFormat.put(\"^\\\\d{2}\\\\s*:\\\\s*\\\\d{2}$\", \"yyyy-MM-dd-HH-mm\");//13:05 拼接当前日期
    dateRegFormat.put(\"^\\\\d{2}\\\\D+\\\\d{1,2}\\\\D+\\\\d{1,2}$\", \"yy-MM-dd\");//14.10.18(年.月.日)
    dateRegFormat.put(\"^\\\\d{1,2}\\\\D+\\\\d{1,2}$\", \"yyyy-dd-MM\");//30.12(日.月) 拼接当前年份
    dateRegFormat.put(\"^\\\\d{1,2}\\\\D+\\\\d{1,2}\\\\D+\\\\d{4}$\", \"dd-MM-yyyy\");//12.21.2013(日.月.年)
 
    String curDate =new SimpleDateFormat(\"yyyy-MM-dd\").format(new Date());
    DateFormat formatter1 =new SimpleDateFormat(\"yyyy-MM-dd HH:mm:ss\");
    DateFormat formatter2;
    String dateReplace;
    String strSuccess=\"\";
    try {
      for (String key : dateRegFormat.keySet()) {
        if (Pattern.compile(key).matcher(dateStr).matches()) {
          formatter2 = new SimpleDateFormat(dateRegFormat.get(key));
          if (key.equals(\"^\\\\d{2}\\\\s*:\\\\s*\\\\d{2}\\\\s*:\\\\s*\\\\d{2}$\")
              || key.equals(\"^\\\\d{2}\\\\s*:\\\\s*\\\\d{2}$\")) {//13:05:34 或 13:05 拼接当前日期
            dateStr = curDate + \"-\" + dateStr;
          } else if (key.equals(\"^\\\\d{1,2}\\\\D+\\\\d{1,2}$\")) {//21.1 (日.月) 拼接当前年份
            dateStr = curDate.substring(0, 4) + \"-\" + dateStr;
          }
          dateReplace = dateStr.replaceAll(\"\\\\D+\", \"-\");
          // System.out.println(dateRegExpArr[i]);
          strSuccess = formatter1.format(formatter2.parse(dateReplace));
          break;
        }
      }
    } catch (Exception e) {
      System.err.println(\"-----------------日期格式无效:\"+dateStr);
      throw new Exception( \"日期格式无效\");
    } finally {
      return strSuccess;
    }
  }
  public static void main(String[] args) {
    String[] dateStrArray=new String[]{
        \"2014-03-12 12:05:34\",
        \"2014-03-12 12:05\",
        \"2014-03-12 12\",
        \"2014-03-12\",
        \"2014-03\",
        \"2014\",
        \"20140312120534\",
        \"2014/03/12 12:05:34\",
        \"2014/3/12 12:5:34\",
        \"2014年3月12日 13时5分34秒\",
        \"201403121205\",
        \"1234567890\",
        \"20140312\",
        \"201403\",
        \"2000 13 33 13 13 13\",
        \"30.12.2013\",
        \"12.21.2013\",
        \"21.1\",
        \"13:05:34\",
        \"12:05\",
        \"14.1.8\",
        \"14.10.18\" 
    };
    for(int i=0;i<dateStrArray.length;i++){
      System.out.println(dateStrArray[i] +\"------------------------------\".substring(1,30-dateStrArray[i].length())+ FormatDate(dateStrArray[i]));
    }
     
  }
 
}