String data1 = "2015-01-01 06:00:00"
String data2 = "2015-01-01 09:30:00"
long time1 = sdf.parse(data1).getTime()
long time2 = sdf.parse(data2).getTime()
System.out.println("相差: " + (time2-time1)/(1000*60))
String data1 = "2015-01-01 06:00:00"
String data2 = "2015-01-01 09:30:00"
long time1 = sdf.parse(data1).getTime()
long time2 = sdf.parse(data2).getTime()
System.out.println("相差: " + (time2-time1)/(1000*60))