fix:bug

common/src/main/java/com/sdm/common/feign/inter/system/IMessageFeignClient.java

@@ -10,6 +10,6 @@ import org.springframework.web.bind.annotation.RequestBody;
 @FeignClient(name = "system",contextId = "systemMessageClient")
 public interface IMessageFeignClient {
 
-    @PostMapping("/systemMsg//sendMessage")
+    @PostMapping("/systemMsg/sendMessage")
     SdmResponse sendMessage(@RequestBody SendMsgReq req);
 }

common/src/main/java/com/sdm/common/service/UserNameCacheService.java

@@ -5,6 +5,7 @@ import com.sdm.common.entity.req.system.UserQueryReq;
 import com.sdm.common.entity.resp.system.CIDUserResp;
 import com.sdm.common.feign.inter.system.ISysUserFeignClient;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.collections4.CollectionUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
@@ -25,17 +26,18 @@ public class UserNameCacheService {
     @Cacheable(value = "userNames", key = "#userIds.toString()")
     public Map<Long, String> batchGetUserNames(Set<Long> userIds) {
         log.info("【缓存未命中】批量查询用户名，用户数量: {}", userIds.size());
-
+        Map<Long, String> userMap = new HashMap<>();
         // 批量调用用户服务
         SdmResponse<List<CIDUserResp>> response = sysUserFeignClient.listUserByIds(
                 UserQueryReq.builder().userIds(new ArrayList<>(userIds)).build()
         );
-
-        Map<Long, String> userMap = response.getData().stream()
-                .collect(Collectors.toMap(
-                        CIDUserResp::getUserId,
-                        CIDUserResp::getNickname
-                ));
+        if (CollectionUtils.isNotEmpty(response.getData())) {
+            userMap = response.getData().stream()
+                    .collect(Collectors.toMap(
+                            CIDUserResp::getUserId,
+                            CIDUserResp::getNickname
+                    ));
+        }
 
         return userMap;
     }