feat(printer): 添加用户购买项设置的Redis缓存控制

- 引入RedisTemplate依赖用于缓存控制
- 新增60秒的缓存键避免重复处理用户购买项
- 在setUserIsBuyItem方法中实现缓存检查逻辑- 添加TimeUnit依赖支持缓存过期时间设置
- 定义USER_PHOTO_LIST_TO_PRINTER缓存键前缀

src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java

@@ -39,6 +39,7 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.Strings;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Lazy;
+import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
 
 import java.math.BigDecimal;
@@ -49,6 +50,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
 @Slf4j
@@ -377,8 +379,16 @@ public class PrinterServiceImpl implements PrinterService {
         printerMapper.updateUserPhotoListToPrinter(memberId, scenicId, printerId);
     }
 
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
+    private static final String USER_PHOTO_LIST_TO_PRINTER = "USER_PHOTO_LIST_TO_PRINTER:";
+
     @Override
     public void setUserIsBuyItem(Long memberId, Long id, Long orderId) {
+        if (redisTemplate.opsForValue().get(USER_PHOTO_LIST_TO_PRINTER + memberId + ":" + orderId) != null) {
+            return;
+        }
+        redisTemplate.opsForValue().set(USER_PHOTO_LIST_TO_PRINTER + memberId + ":" + orderId, "1", 60, TimeUnit.SECONDS);
         printerMapper.setUserIsBuyItem(memberId, id, orderId);
         // 创建打印任务
         List<MemberPrintResp> userPhotoListByOrderId = getUserPhotoListByOrderId(orderId);