先转成date类型。再比较

String nowDate_String = ut.getDate();

String endDate_String = ie.getCertiEndDate();

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date nowDate_Date = sdf.parse(nowDate_String);

Date endDate_Date = sdf.parse(endDate_String);

int compareTo = nowDate_Date.compareTo(endDate_Date);

if((compareTo == 1&&compareTo == 0)){

m.put("date_result", true);

}else{

m.put("date_result", false);

}

原文：https://www.cnblogs.com/shiaoran/p/11322669.html