数据

ruoyi-cai/src/main/java/com/ruoyi/cai/util/RateUtil.java

@@ -1,6 +1,7 @@
 package com.ruoyi.cai.util;
 
 import cn.hutool.core.util.NumberUtil;
+import cn.hutool.core.util.RandomUtil;
 
 import java.math.BigDecimal;
 
@@ -9,4 +10,21 @@ public class RateUtil {
     public static String getRateStr(BigDecimal rate){
         return NumberUtil.mul(rate,100).longValue() + "";
     }
+
+    public static boolean randomRate(Integer rate){
+        if(rate == null || rate <= 0){
+            return false;
+        }
+        int ran = RandomUtil.randomInt(101);
+        if(ran < rate){
+            return true;
+        }
+        return false;
+    }
+
+    public static void main(String[] args) {
+        for (int i = 0; i < 100; i++) {
+            System.out.println(randomRate(10));
+        }
+    }
 }