数字工具类

huimv-admin/src/main/java/com/huimv/admin/common/utils/NumberUtils.java

@@ -4,6 +4,8 @@ package com.huimv.admin.common.utils;
 import com.baomidou.mybatisplus.core.toolkit.StringUtils;
 
 import java.text.DecimalFormat;
+import java.util.Map;
+import java.util.Random;
 
 public class NumberUtils {
 
@@ -14,5 +16,13 @@ public class NumberUtils {
         }
         return df.format(Double.valueOf(str));
     }
-
+    //num 是小数位数
+    public static String getNum(Integer min,Integer max, Integer num) {
+        Random rand = new Random();
+        int result = rand.nextInt(max - min ) +min;
+        if (num >0){
+            return result+"."+(rand.nextInt((int) Math.pow(10,num)));
+        }
+        return  result+"";
+    }
 }