获取当前年月日...信息的方法，获取请求的ip地址，由于数据库中是time格式，所以要获取时分秒的格式

 1 public class CommonDate {
 2 
 3     public final String year = String.valueOf(Calendar.getInstance().get(Calendar.YEAR));
 4     public final String month = String.valueOf(Calendar.getInstance().get(Calendar.MONTH)+1);
 5     public final String day = String.valueOf(Calendar.getInstance().get(Calendar.DAY_OF_MONTH));
 6     public final String hour_24 = String.valueOf(Calendar.getInstance().get(Calendar.HOUR_OF_DAY));
 7     public final String hour_12 = String.valueOf(Calendar.getInstance().get(Calendar.HOUR));
 8     public final String minute = String.valueOf(Calendar.getInstance().get(Calendar.MINUTE));
 9     public final String second = String.valueOf(Calendar.getInstance().get(Calendar.SECOND));
10     public final String week_of_year = String.valueOf(Calendar.getInstance().get(Calendar.WEEK_OF_YEAR));
11     public final String week_of_month = String.valueOf(Calendar.getInstance().get(Calendar.WEEK_OF_MONTH));
12     public final String day_of_year = String.valueOf(Calendar.getInstance().get(Calendar.DAY_OF_YEAR));
13     public final String day_of_month = String.valueOf(Calendar.getInstance().get(Calendar.DAY_OF_MONTH));
14     public final String day_of_week = String.valueOf(Calendar.getInstance().get(Calendar.DAY_OF_WEEK));
15 
16 
17 
18     /**
19      * 获取当前时间
20      * @return 当前时间,24小时yyyy-MM-dd HH:mm:ss格式
21      */
22     public String getTime24(){
23         Date date = new Date();
24         SimpleDateFormat timeStamp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
25         String time = timeStamp.format(date);
26         return time;
27     }