mark for pull

ym-common/src/main/java/com/cnbm/common/spc/util/DataUtils.java

@@ -23,7 +23,45 @@ public class DataUtils {
 
     }
 
+    public List<List<Date>> split(List<Date> value) {
+        List<List<Date>> result = new ArrayList<>();
 
+        int day = value.iterator().next().getDate();
+        List<Date> newListEntry = new ArrayList<>();
+
+        for (Date date : value) {
+            if (date.getDate() == day) {
+                newListEntry.add(date);
+            }
+            else {
+                day = date.getDate();
+                result.add(newListEntry);
+                newListEntry = new ArrayList<>();
+                newListEntry.add(date);
+            }
+        }
+        result.add(newListEntry);//because the last sublist was not added
+
+        return result;
+    }
+
+    public static String splitToNeed(String s,Integer type){
+        String[] s1 = s.split(" ");
+        String[] split = s1[0].split("-");
+        String year = split[0];
+        String mon = split[1];
+        String day = split[2];
+        if(type == 1 ){
+            //年
+            return year;
+        }else if(type == 2 ){
+            //月
+            return year+"-"+mon;
+        }else {
+            //日
+            return s1[0];
+        }
+    }
     public static Date getBeforeDate(Integer number){
         Date date = new Date();//获取当前日期
         SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");//格式化一下
@@ -37,6 +75,19 @@ public class DataUtils {
         Date day = calendar1.getTime();
         return day;
     }
+    public static Date getAfterDate(Integer number){
+        Date date = new Date();//获取当前日期
+        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");//格式化一下
+        Calendar calendar1 = Calendar.getInstance();//获取对日期操作的类对象
+        //两种写法都可以获取到前三天的日期
+        // calendar1.set(Calendar.DAY_OF_YEAR,calendar1.get(Calendar.DAY_OF_YEAR) -3);
+        //在当前时间的基础上获取前三天的日期
+        calendar1.add(Calendar.DATE, 0+number);
+        //add方法 参数也可传入 月份，获取的是前几月或后几月的日期
+        //calendar1.add(Calendar.MONTH, -3);
+        Date day = calendar1.getTime();
+        return day;
+    }
 
     /**
      * 将一组数据固定分组，每组n个元素