JeecgBoot 2.4.2 积木报表版本发布，基于SpringBoot的低代码平台

jeecg-boot/jeecg-boot-module-system/src/main/java/org/jeecg/modules/system/rule/OrderNumberRule.java

+package org.jeecg.modules.system.rule;
+
+import com.alibaba.fastjson.JSONObject;
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang.math.RandomUtils;
+import org.jeecg.common.handler.IFillRuleHandler;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * 填值规则Demo：生成订单号
+ * 【测试示例】
+ */
+public class OrderNumberRule implements IFillRuleHandler {
+
+    @Override
+    public Object execute(JSONObject params, JSONObject formData) {
+        String prefix = "CN";
+        //订单前缀默认为CN 如果规则参数不为空，则取自定义前缀
+        if (params != null) {
+            Object obj = params.get("prefix");
+            if (obj != null) prefix = obj.toString();
+        }
+        SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
+        int random = RandomUtils.nextInt(90) + 10;
+        String value = prefix + format.format(new Date()) + random;
+        // 根据formData的值的不同，生成不同的订单号
+        String name = formData.getString("name");
+        if (!StringUtils.isEmpty(name)) {
+            value += name;
+        }
+        return value;
+    }
+
+}