java代码:
/**
* 获取当前系统时间最近12月的年月(含当月)
*/
public static String[] getLast12Months(Date timeDay){
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String time = sdf.format(timeDay);
//处理月份输入条件
if(time.length()==7){
time=time+"-01 00:00:00";
}else if(time.length()==110){
time=time.substring(0,7)+"-01 00:00:00";
}
try {
date= sdf.parse(time);
} catch (Exception e) {
return null;
}
String[] last12Months = new String[12];
Calendar cal = Calendar.getInstance();
//设置输入条件时间
cal.setTime(date);
cal.set(Calendar.MONTH, cal.get(Calendar.MONTH)+1); //要先+1,才能把本月的算进去
for(int i=0; i<12; i++){
cal.set(Calendar.MONTH, cal.get(Calendar.MONTH)-1); //逐次往前推1个月
last12Months[11-i] = cal.get(Calendar.YEAR)+ "-" + addZeroForNum(String.valueOf(cal.get(Calendar.MONTH)+1), 2);
}
return last12Months;
}
public static String addZeroForNum(String str, int strLength) {
int strLen = str.length();
if (strLen < strLength) {
while (strLen < strLength) {
StringBuffer sb = new StringBuffer();
sb.append("0").append(str);// 左补0
// sb.append(str).append("0");//右补0
str = sb.toString();
strLen = str.length();
}
}
return str;
}
在Controller层直接调用:
获取到的是String类型的数组
可以通过以下方法转换为List
List<String> last12MonthsList= Arrays.asList(last12Months);