动态获取上月 年月字段（yyyyMM）

package com.wages.salary.service.common;

import java.text.SimpleDateFormat;
import java.util.Date;

public class DateUtil {
    public static String  getDate() {
        Date date = new Date();
        SimpleDateFormat sf = new SimpleDateFormat("yyyyMM");
        String s = sf.format(date);
        //String s="201401";
        String year=s.substring(0,4);
        String month =s.substring(4,6);
        int result=0;
        if(month.equals("01")){
            int yearInt=Integer.parseInt(year)-1;
            int monthInt=12;
             result=yearInt*100+monthInt;
        }else{
             result=Integer.parseInt(year+month)-1;
        }
          return String.valueOf(result);
        //System.out.println(result);    
    }
}

 

 

201410------>201409

201401------>201312