diff --git a/01-placeorder/src/main/java/com/mashibing/controller/PlaceOrderController.java b/01-placeorder/src/main/java/com/mashibing/controller/PlaceOrderController.java
new file mode 100644
index 0000000..eadab34
--- /dev/null
+++ b/01-placeorder/src/main/java/com/mashibing/controller/PlaceOrderController.java
@@ -0,0 +1,32 @@
+package com.mashibing.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * @author zjw
+ * @description
+ */
+@RestController
+public class PlaceOrderController {
+
+    /**
+     * 模拟用户下单操作
+     * @return
+     */
+    @GetMapping("/po")
+    public String po(){
+        //1、调用库存服务扣除商品库存
+
+        //2、调用订单服务，创建订单
+
+        //3、调用优惠券服务，预扣除使用的优惠券
+
+        //4、调用用户积分服务，预扣除用户使用的积分
+
+        //5、调用商家服务，通知商家用户已下单
+
+        return "place order is ok!";
+    }
+
+}
diff --git a/02-itemstock/src/main/java/com/mashibing/controller/ItemStockController.java b/02-itemstock/src/main/java/com/mashibing/controller/ItemStockController.java
new file mode 100644
index 0000000..9848a5c
--- /dev/null
+++ b/02-itemstock/src/main/java/com/mashibing/controller/ItemStockController.java
@@ -0,0 +1,23 @@
+package com.mashibing.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * @author zjw
+ * @description
+ */
+@RestController
+public class ItemStockController {
+
+    private static int stock = 10;
+
+    @GetMapping("/decr")
+    public void decr(){
+        stock--;
+        if(stock < 0){
+            throw new RuntimeException("商品库存不足！");
+        }
+        System.out.println("扣减库存成功！");
+    }
+}
diff --git a/03-ordermanage/src/main/java/com/mashibing/controller/OrderManageController.java b/03-ordermanage/src/main/java/com/mashibing/controller/OrderManageController.java
new file mode 100644
index 0000000..abbea87
--- /dev/null
+++ b/03-ordermanage/src/main/java/com/mashibing/controller/OrderManageController.java
@@ -0,0 +1,18 @@
+package com.mashibing.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * @author zjw
+ * @description
+ */
+@RestController
+public class OrderManageController {
+
+    @GetMapping("create")
+    public void create(){
+        System.out.println("创建订单成功！");
+    }
+
+}