商城商店步骤学习完成

order-service/src/main/java/cn/mayiming/Consumer/PaySuccessConsumer.java

@@ -0,0 +1,47 @@
+package cn.mayiming.Consumer;
+
+import cn.mayiming.Mapper.OrderMapper;
+import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
+import org.apache.rocketmq.spring.core.RocketMQListener;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Map;
+
+@Component
+@RocketMQMessageListener(
+        topic = "pay_success_topic",
+        consumerGroup = "order-pay-success-consumer"
+)
+public class PaySuccessConsumer implements RocketMQListener<Map<String, Object>> {
+
+    @Autowired
+    private OrderMapper orderMapper;
+
+    @Transactional(rollbackFor = Exception.class)
+    @Override
+    public void onMessage(Map<String, Object> msg) {
+        try {
+            String orderNo = msg.get("orderNo").toString();
+            System.out.println("========== 订单服务接收支付成功消息 ==========");
+            System.out.println("订单号：" + orderNo);
+            System.out.println("支付金额：" + msg.get("payAmount"));
+            System.out.println("===========================================");
+
+            // 核心：更新订单状态为「已支付」（假设1=已支付）
+            int updateResult = orderMapper.updateOrderStatus(orderNo, 0, 1);
+            if (updateResult == 0) {
+                throw new RuntimeException("更新订单状态失败，订单号：" + orderNo);
+            }
+            System.out.println("订单" + orderNo + "已更新为「已支付」状态");
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            System.err.println("消费支付成功消息失败：" + e.getMessage());
+            // 生产环境：抛出异常触发MQ重试，确保订单状态最终一致
+            throw new RuntimeException("消费失败，触发重试", e);
+        }
+    }
+}
+

order-service/src/main/java/cn/mayiming/Mapper/OrderMapper.java

@@ -78,4 +78,8 @@ public interface OrderMapper {
         // 简单生成规则：时间戳 + 6位随机数
         return System.currentTimeMillis() + "" + (int)(Math.random() * 900000 + 100000);
     }
+
+    // OrderMapper补充更新订单状态方法
+    @Update("UPDATE t_order SET order_status = #{newStatus}, update_time = CURRENT_TIMESTAMP WHERE order_no = #{orderNo} AND order_status = #{oldStatus}")
+    int updateOrderStatus(@Param("orderNo") String orderNo, @Param("oldStatus") Integer oldStatus, @Param("newStatus") Integer newStatus);
 }