基本完成转链。富贵指日可待！

src/main/java/cn/van/business/util/AmountStepHandler.java

@@ -0,0 +1,22 @@
+package cn.van.business.util;
+
+import static cn.van.business.util.JDUtil.UserInteractionState.GiftMoneyStep.STEP_QUANTITY;
+
+/**
+ * @author Leo
+ * @version 1.0
+ * @create 2025/4/4 20:46
+ * @description：
+ */
+
+// 实现金额处理步骤
+class AmountStepHandler implements FlowStepHandler {
+    public void handle(JDUtil util, String wxid, String input, JDUtil.UserInteractionState state) {
+        if (!util.isValidAmount(input)) {
+            util.wxUtil.sendTextMessage(wxid, "金额格式错误", 1, wxid);
+            return;
+        }
+        state.getCollectedFields().put("amount", input);
+        state.setCurrentStep(STEP_QUANTITY);
+    }
+}