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时间处理

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1.得到当前的时间 

Calendar cal = Calendar.getInstance(); 
String time=formatter.format(cal.getTime()); 
String strEnd=time.substring(0, 16);// 2007-10-30 09:30 

Calendar cal = Calendar.getInstance(); 
String time=formatter.format(cal.getTime()); 
String strEnd=time.substring(0, 16);// 2007-10-30 09:30 

2.得到前一天的时间 

Calendar c = Calendar.getInstance(); 
c.add(Calendar.DAY_OF_MONTH, -1); 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String mDateTime=formatter.format(c.getTime()); 
String strStart=mDateTime.substring(0, 16);//2007-10-29 09:30 

Calendar c = Calendar.getInstance(); 
c.add(Calendar.DAY_OF_MONTH, -1); 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String mDateTime=formatter.format(c.getTime()); 
String strStart=mDateTime.substring(0, 16);//2007-10-29 09:30 

3.得到前几天的时间 

Calendar c = Calendar.getInstance(); 
c.add(Calendar.DAY_OF_MONTH, -5);//得到前5 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String mDateTime=formatter.format(c.getTime()); 
String strStart=mDateTime.substring(0, 16);//2007-10-24 09:30 

Calendar c = Calendar.getInstance(); 
c.add(Calendar.DAY_OF_MONTH, -5);//得到前5 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String mDateTime=formatter.format(c.getTime()); 
String strStart=mDateTime.substring(0, 16);//2007-10-24 09:30 

4.得到当前时间的前几年的时间 


Calendar c = Calendar.getInstance(); 
c.add(Calendar.YEAR, -5);//得到前5年 
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String mDateTime=formatter.format(c.getTime()); 
String strStart=mDateTime.substring(0, 16);//2002-10-24 09:30 

 

 

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